Gt40 heads on 351w marine.

Gt40 heads on 351w marine Any marine head shop should have known the 351 marine engine should have GT40 style heads, NOT E7s. 5-01 Explorers. Roller camshaft & lifters; Standard rotation; Assembled with all internal components, cylinder heads; Rated at 260-310 HP at the crankshaft depending on fuel system The C9OE and D0OE ('69-'70 351w)castings have much smaller chambers and bigger valves and were the hot ticket back in the days before aftermarket heads (like the C5-C6 289 heads with 54cc chambers). 8 GT-40 Cylinder Head. General / Other. Thanks for submitting! Atlantic Marine Store. 8L GT-40 EFI (HO Pro-Boss) with 310HP Nov 23, 2014 · Hello. I need advice from you 351W guru's on what intake will be best for throttle responce, holding power/torque, and perform best at 2,500-3,500 RPMs. Nov 23, 2016 · They also installed GT-40-type cast-iron cylinder heads, the tubular “tuned” manifold, tubular stainless-steel headers, larger intake (1. Heads have also been shaved 0. The "GT40" was the multiport EFI PCM HO 351w and was always rated at 310hp (it was available 95-02). 8 351W, model years 1993-1995. 045 TR5-1 V-Power NGK Spark Plug 7060 Premium NGK spark plugs are known for their reliable performance and superior anti-fouling characte Sep 15, 2019 · 1987 - 1996 F150 & Larger F-Series Trucks - 351W EFI GT40 head swap - So I have a 96 f250 4x4 5speed with a 351W. Dec 11, 2008 · The gt40 not having it. Ford Motorsport had come up with a tig welded tubular upper intake manifold, and improved cast iron cylinder heads designated GT40 for the Mustang 5. Anybody know anything about these? Only number he can give me from the heads are E8JLAA. You could conceivably throw any of those heads on ( use the same on both sides of course) and still have the same 240 hp or so rating. Just wondering what to expect with the change, it is hard to find any dyno sheets on the marine version of the motor to compare it to. Only the Multiport was given the moniker of "GT40", in addition to the "Pro Boss" moniker (as seen in your picture). I also disconnected pump outlet while running to verify the flow. Motor is described as 325hp 351w with Holley 650 4v marine carb, would this motor be usable in a truck or Jul 15, 2009 · The are also found on 4 bbl 302 and 351 Marine engines untill a later date possibly untill Mercury marine quit using ford engines. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members) i'd love to use these heads, Apr 17, 2010 · I replaced the GT40 heads with GT40p's, also dropped a cam (small lift/495), roller lifters, rockers and flat top pistons in it. 8HO GT40. Aug 26, 2009 · Mine were all between 65 and 66cc, I have a set of GT40 marine heads that are 67cc. First of all I want to know if there is any way to get gt40p heads on the 351 thats going in my 87 fox. Feb 13, 2010 · FTE member Arctic Y Block has a 351W marine engine in his boat. Spoke with FMS/FRPP today and they said they didn't recognize the number but the casting number is visible in the pictures he sent. It had electrical problem and would not start and I wanted the extra horse power for footin. The gt heads came without rockers - so Will my current pedestal rockers and pushrods work with the gt40p heads? Cam is stock at this point and I REALLY dont have the $ for flashy springs etc. Are you aware that 5. 0 crate engine with the GT40 heads, B303 cam, and the GT40 tubular intake rated at 285HP. The p heads are a *little* better than the regular GT40's that came on the GT40, but not a lot- so you wont see the same bang for your buck by upgrading. 0 GT40 cast iron cylinder heads. Speakig with the engineer incharge of the GT40 head design we discussed the usage of the DOOE intake port with the use of the old 260 / 289 HI Po exhaust port. Oct 3, 2009 · 87 GT- F4TE 351w roller 9. Engine runs great but needs a little more HP. I ended up ringing off some bolts in the stock heads, did some research online and everyone seems to rant and rave over the GT40?s. This MABBCO cylinder head is for an Ford 5. How to identify your GT40 heads look for a "GT" or "GT40P" stamp inside the head casting or a three-bar (GT40) or 4 bar (GT40P) stamped on the side of the head. Also, while the intake valve is the same size on both, the "P" exhaust valve is smaller (1. 54" valves, “GT” markings, and F3ZE/F4ZE casting numbers. Send. In good shape but will need to be cleaned up. Rocker arms not included. Or how does that all work; The folks who installed the GT40 heads said some heads have the Smog Sys air ports and some don't have them; one person who did the GT 40 install in his Bronco said; "GT 40 heads I have taken from Marine Applications were ported. 8L, 351W CID Cylinder Head Assembly. Head Casting #s: E5TE, E7TE. regular GT40 are almost direct swap. 54-inch), high-flow ports, high-rate capacity fuel pump, and injectors, revised combustion chambers, a redesigned air filter for improved airflow and a true dual exhaust system. 8 gt40 heads rated to 310 HP eec-iv using speed density Tuning Marine Ford 351W GT40. Join Our Newsletter. Long time Ford enthusiast. If youre rebuilding from scratch, pick some pistons that will get you in the 9. of the GT-40 heads. Dec 27, 2008 · You should magnaflux the heads for cracks before doing anything else. Ford 5. 1/2 or is that for a 351w. Otherwise, I never cracked open the motor. My friend(our old body shop manager) used to race a Granada and he always ran 351 marine heads because his class required a Ford ID number and they were superior to passenger May 3, 2019 · FWIW, the GT-40 combustion chamber (non-Cobra) is a nominal 5cc larger than the "P" so they'll cost you half a point in static compression. You'll have better luck sourcing them from a Marine engine or off a Lightning pickup. This was through an E4OD that probably takes 20-22% parasitic loss. This includes the carb'd version, TBI version and Multiport version. 522/. This motor has been professionally remanufactured to meet or exceed OEM marine engine stock specifications. Ford GT40 Iron 2 BAR Marine Cylinder Head F3JE-CA 302 351w Mustang Explorer 5. 0 heads, not 351W which I had wanted. Ford part numbers are F3ZZ-A and F4ZZ-A. 0 (w/ GT40P heads) into my 20ft boat. 0L/5. GT will be GT40 heads, R will be E5TE and T will be E7TE heads. Jun 8, 2011 · The iron GT-40 heads were standard equippment on the 1993 Cobra Mustang with the same 5. Production heads like the GT40's and GT40P's . It's not a military secret that E7 heads suck, and anything to help an engine breathe is an upgrade. Apr 24, 2018 · Small Block V8 (221, 260, 289, 5. Jan 25, 2006 · With that cam and desktop dyno ( knowing all aspects of the engine) - I put 417 to the wheels with ported Windsor JR heads, Performer RPM intake and matching carb. A bore, hone, piston, ring, balance, and bearing kit assembled will be $1,500. 7/16" for the lil' windsor, and 1/2" for the 351. 351W / 5. Casting number: E4AE, E9AE, F0AE : ATK-DMA1GTP Oct 3, 2011 · Hi, new to this forum. I put down 238rwhp@4200 and 333rwtq@ 3400rpm. 8 / 351/ 285HP Std rotation, dipstick in block, flat tappet cam. 0L GT-40 (or GT-40p) heads will need the head bolt holes drilled out for the larger 351 head bolts? IIRC 5. I want a real hot cam that builds loads of torque at 2000-4000 The early marinized engines were rated at 220 hp (164 kW). and will fit but the mounting bolt holes have to be drilled out to 1/2" diameter. 8L; Standard Rotation; Flat Tappet Cam; GT40 Performance Heads; 285hp Rating Sep 15, 2010 · Ford Racing M-6049-X306 Cylinder Head, GT-40, Aluminum, Assembled, 64cc Chamber, 178cc Intake Runner, Ford, 289, 302, 351W, Each $ 500 ea Hello, This is a set of GT40 Heads They have been completely reconditioned by my local machine shop and are ready to go. My mechanic is recommending dropping a standard 351 long block in to save time and money on a small block replacement plus extra costs of pressure testing heads, intake manifold and labour costs for rebuilding. The gt40 heads are available with the holes already drilled out for a 351w, and were used by pcm with great success on Ski Nautiques from the 90's until the ford marine blocks dried up in about 2002. eng. Specifically designed for the Ford 351 5. Email. GT40 and GT40P heads were originally used on 302's and if used on a 351 will need to have the head bolt holes drilled larger. this is the list i know of. 8L (351W ci) marine engine applications, with Jan 17, 2003 · Small Block V8 (221, 260, 289, 5. 30hrs since new. GT40P heads casting number F77E-AA came on 97. GT-40's 90 and up were 351 High Output motors, with GT-40 heads, 285 H. Or off the web. com May 8, 2020 · GT40 refers to the heads. Your imput is appreciated Jun 24, 2006 · Only cars I know of that the GT40 ( not"P") came on was the 5. MABBCO cylinder heads are cleaned, inspected, and machined on state of the art equipment. They have 2 bars on the side of the head, not 3 or 4 like the automotive Gt-40 and GT-40P heads. Apr 14, 2010 · Post any info/questions regarding Nautiques. I got the heads at a good deal along with the pistons and rods, cam and lifters, and crank. I'll let someone more knowledgeable than me tell you what the difference is between that and a high output 351W with GT-40 heads used in the early 90's (and, possibly, later I think). As you are probably aware, ford made a whole lot of heads for 302's and 351w v8s over the years. I am a yacht designer by trade and have been 3D CAD modeling for 27+ years. 84/1. From my searching I have found these to be 5. Find many great new & used options and get the best deals for Ford Gt40 3 Bar # F3ze AA 302 351w Pair of Cylinder Heads at the best online prices at eBay! Free shipping for many products! Apr 22, 2009 · Small Block V8 (221, 260, 289, 5. See All 17 Photos After making pretty decent power with GT40 heads, Brian removed them for Apr 9, 2017 · They were also fitted on the 351w (5. Apr 17, 2009 · The are also found on 4 bbl 302 and 351 Marine engines untill a later date possibly untill Mercury marine quit using ford engines. regular GT40 heads were 96-early97 Explorers as well as the SVT and marine engines so they are avalible but not as common. Jan 5, 2011 · I ran a 9. What's a decent sized cam for those heads on a 351? He's got his eyes on a Lunati cam, 227/233 duration at . Aug 13, 2004 · The 351 Lightning motor was a 351w with the GT40/Cobra induction peices. I pulled them from a wrecked '96 Explorer 5. 8, PCM Pro Boss GT-40, etc. Great deals. Apr 11, 2024. D8 heads would have been introduced in 78 so they might be original to the engine. Otherwise I have some experiece with a B cam and 1. The head we’ve pulled is marked ‘EB’ over ‘O5TE’ in the casting Sep 7, 2016 · GT-40 heads are only marginally better than E5/E7TE heads that came on production 351/5. May 12, 2019 · 2) another option would be to order a remanufactured 351W engine with GT-40 heads from US (I saw some vendors at US by searching thru internet) The engine we have: PCM 5. 67 out of 5 stars ( 3 ) Jul 4, 2010 · Small Block V8 (221, 260, 289, 5. The gt-40p only came out on 97 1/2 - 2001 explorers/mountaineer with 5. 9. 0:1 comp, GT40 performance heads Requires 92 octane. 302 marine engines might have, but I only know 351w engines. This 5. 8 OHV V8 (E7TE) Upgrade your vehicle’s performance with our Rebuilt Cylinder Heads for Ford Truck, Van, Auto, Marine applications. 8L Ford engine is rated at 260-310hp at the crank (depending on intake, carb or EFI, exhaust manifolds, etc). 8's through '97. I recently pulled the motor to replace all the seals. I'm new to this site and forum. The P heads come from a 302 c. Nov 21, 2010 · I have a 87 Mastercraft boat with a Ford 351 Wnd. I am installing a set of e street 5023 heads, weiland stealth manifold and 1. Oct 13, 2019 · If you have a gt-40 it is a left hand rotation engine. 50 Price. 8/351W) - Gt40 heads, worth it or not? - Trying to figure out if a set of gt40 heads would be worth my time or if I should just work over a set of stock heads. This fact all by itself makes the GT-40 a good, economical head for 5. Nearly ALL small block 289/302 heads have the same sized valves. 450" and the only cast iron exhaust manifolds worth a damn are '69-70 351W pieces or reproduction HiPo's. Replaces years 1988-1994. Nov 15, 2010 · Small Block V8 (221, 260, 289, 5. Your E8 head is a 2-bar marine GT 40 head, different than the E7. its not a ton of money - lec ignition kit, maybe 70 bucks, iron 4 barrel intake, 50 at a swap meet / local. Post by cgrey8 » Wed Nov 30, 2016 10:40 pm Rebuilt Cylinder Heads for Ford Truck, Van, Auto, Marine – Cast Iron 351 5. Economical because it is a common head. I had thought they stopped using that before 1990. Jul 7, 2006 · The heads also have 1. Long story short, I came across a set of E8JL heads out of a boat with a 351W which had a cracked block. 8/351W) - Gt40 heads on a 351W what needs to be done?? - I have a 351W out of a 78 couger and I found a set of gt40 heads Jan 6, 2008 · The GT40 heads will add a little bit to the 351, but dont use an F-cam. 8/351W) - 351W heads identification - Is there any way to identify all the different style heads used on the 351W I've heard E7, GT40, GT40P and D0OE, is there a visible difference or is it stamped on the heads could some one help me out? I have a78 SN withe the RR 351 and I am looking into buying a set of GT-40 or GT-40P heads. Home Shop All Ill try stick my head round the back today and get some casting numbers on the heads - apparently some marine 351w's came with gt40 heads. Question: will gt40 or (p) heads fit on my 1987 indmar 351W (5. 8L (351W) marine engine. Would like to do nothing but change heads to incease HP. has any one else ran commander marine manifods with GT40 heads? Jun 8, 2008 · im confused, is it necessary to get any special kit when putting gt40 non P heads on a 302 becaus eof this 7/16 vs. I see expensive '93-95 Lightning truck GT40 lowers and have heard mention of an Edelbrock aftermarket 5. May 16, 2024 · The GT40 cylinder heads found on Ford E-Series E-205 205cc 2. Yes if you should have the gt-40 heads as standard they have 3 bars on the end of head for idenification, If you can't source one you can go with the p-heads they have 4 bars out of an explorer and drill out head bolts and install brass freeze plugs to fit on the 351, if you cant source that head you can go to the std low hp e5-te head which has 2 bars or no bars but you'll reduce hp by about Pro Boss means that it has the GT40 heads and Pro Tec computer ign. Only ones that had bigger were the Boss 302 heads and the 90's GT40 heads. GT40 heads can be found pretty much anywhere you look. 2 is the year for 1992. What do GT40 Heads buy you? Sep 27, 2011 · A marine engine typically uses a regular production 351 shortblock but with GT40 heads, a marine grind cam which is also a good automotive RV grind, and marine specific intake and exhaust manifolds and water pump setup. $ barrel carb 50 bucks give or take. Jan 14, 2022 · What is needed to make GT40 heads work on a 351W? I've read just about every post on every forum and cannot find a definitive answer on what parts or work is needed to make it work and furthermore if the stock headers will still fit. Includes valves and springs. Not GT40 heads. Click on Discount Inboard Marine at the top of the page, go to cylinder heads, and you will see a pic. Aug 20, 2024 · Three lines on the head would indicate GT40 heads which didn't appear until the 90's. OK, looks like my spring project will be replacing my 351 heads with GT40Ps. Feb 16, 2012 · Small Block V8 (221, 260, 289, 5. Most PCM and Indmar marinized 351’s were rated at 240 hp (179 kW). A couple Aug 13, 2004 · Another thing to look out for is marine sourced GT40 cast iron heads :evil: Click to expand Those heads will likely have bigger chambers than the standard ~64cc chamber found on the regular gt-40s. May 17, 2008 · Small Block V8 (221, 260, 289, 5. My '97 is still running strong but if my ecu were to take a dump I am wondering what my best option would be. Customer: got a 351w gt40 heads and a mild cam,,650 holley,, the engine is a marine, and is in a jet boat,, we cannot get the engine to go over 3500 rpms, last year we were pullin 4100, carb is set, oil is fresh, the engine has only 36 hrs on it, could timing be an issue?? starts fine, idels fine and 4 barrels are opening up, the dist. 8:1 compression, hypereutectic pistons, heavy duty Ford truck connecting rods GT-40 high performance heads Valves: 1. My stock gt40 heads are testing bad (leakdown test Forums; For Sale; Store Replace bad GT40 heads with Jun 10, 2007 · Nautique has used 351 ford blocks for most of their boats - The GT40 is a ford 351 - The 351 is no longer made therfore the change to the 350 chevy in recent years - -The GT40 designation on the motor is the model of the "heads" that are used Jan 23, 2019 · Because the 351W has larger (1/2 inch) head bolts than the 289/302 (7/16 inch), you need bolt spacers, available from Summit Racing Equipment and other aftermarket sources such as ARP, which enable you to install 351W heads on a 289/302 using the 289/302 head bolts. Car will have be 5-speed Any help would be appreciated. 84-inch) and exhaust valves (1. I'd like better flow, so I'm considering pulling some gt40s. Motor has been redone some years ago with flat top pistons and light port work on heads and balanced. My DO8E heads I have for sale that came from my stock 240hp pcm 351w also make the same 240 hp rating. $400 is a good price for some reman freshened heads with new seats etc. (20 extra ponies over standard gt40). 8L) V8 in the Ford Lightning from 1993 to 1995. 08" Intake/60cc 1. 3. Don't want to invest $ in gt40 (p) heads and find out they won't work. (Please note these are not GT40P Explorer heads). Locked; SOLD Ford 5. i would avoid the P heads. You can also get GT40 heads in non-marine systems. They were realy for 302 351W marine engines later found there way into lightning trucks. Jun 26, 2024 · I have a 351w marine engine, I didn’t realize it had gt40 heads until I got them off yesterday. 7 rockers, shorty headers, or trying to find a cheaper intake manifold. 7RR, professional products typhoon intake, 24lb injectors, and probably many other things I'm forgetting. Posted on May 07, 2014 by promarengine. Unless you score some F-150 Lightning or Marine GT40's, the bolt holes will need to be drilled out to 1/2"- Not a big deal. Jul 22, 2013 · Is there such a thing as GT40 heads with 2 bar markings? I know about the regulars and P's being 3 and 4 bars but I have a set with 2 bars. heads, comp cams xe264, 1. The 1996-97 models got the normal GT-40 heads while the 1998-2000 models got the revised Sep 27, 2009 · PCM 240 HP Ford 351w from 1995 Sport Nautique - Engine had 635 hours when pulled from boat. Use DMA1 for Std rotation Casting number: E4AE, E9AE, F0AE : ATK-DMA1R: 5: 1988-1994: Ford 5. These heads have been remanufactured using refaced reclaimed Factory Valves. Nov 30, 2016 · What I know is that its 5. 8L engine will work in all Ford 5. GT40 is Ford nomenclature. The valve seats have been cut on a Feb 19, 2013 · The GT40 heads are for the 302, but if I have the mounting bolt holes reamed/drilled out they will fit the 351w? Same fab for the 'E7' head? The GT40p are a little better then the GT40, BUT will create some header/manifold to spark plug space issues? # RP030007- For high output Ford engines, including GT-40 (OLD PART #WL764) # RP030002- For PCM and Indmar Standard Ford Engines from 1975 on (standard output - up to 260 hp engines) (OLD PART #WL24) # WL45 - For all older Ford Marine engines to year 1974 Ford GT40 Cylinder Heads in-stock with same-day shipping. The head cast number may or may not be visible under the valve cover but the head type (GT) will be. I'm not sure what the different boat engines came with for heads, but mustangs (302W and 351W use the same heads) came with 1. Engines that come from the factory with GT40 heads are referred to at GT40 engines even though the heads are the only major difference. from what i understand, the gt40p's are the ones that give everyone so much trouble with the headers not lining up correctly. A few 351 GT-40/HO engines were marinized equipped with throttle-body fuel injection (TBI) and were rated at 310 hp (231 kW). 0L Explorers and Mountaineers. Strange that you say you have 1:1 trans. 035 EFI GT40 and Pro Tec Ignitions gap at . 0 302 gt40 Nov 30, 2016 · What I know is that its 5. 60" Exhaust Pair For Mechanical Flat Tappet/Hydraulic Roller Camshaft 289/302/351W. The common upgrade to standard (non-HO) heads now on our boats are the GT40p heads, which came on '97-01 5. Starting a project to put GT40 cylinder heads on a 1975 351W! This video shows tear down and preparation for the new head! Apr 20, 2009 · I will be starting my 351w build soon and have a few questions. Ford had produced 11,563 Lightnings, and the intakes that were used from this truck are most commonly applied on the used car market. 8 Cobra "R". 8/351W) - Gt40 heads on 351w - I have a 351w eith d80e heads. Standard Ford Marine stock cylinder head replacement. 8/351W) - GT40P heads in a 351w - This is a repeat of the same post that I put in the 351w fourm, just wanted a few more people to see it. 6 RR Ported Cobra Upper GT-40, (need to locate a 351W GT-40 lower) FMS 351w swap oil pan and pick-up Longtubes for 351W 3” x-pipe and cat-back. Sep 14, 2018 · Supposedly the GT-40p are a little better out of the box, but they have an odd spark plug angle that makes fitting headers/manifolds/exhaust a bitch. I know the head bolts are different (1/2 inch for 351). is mech Jan 10, 2010 · thanks alot! i agree, that photo will be very usefull down the line. Feb 2, 2016 · Forget the GT40 or 40P heads on a 351, you'll just be disappointed it still doesn't make enough power and chokes out at 5000 rpm. should the Jun 14, 2014 · GT40 heads info from a retired Ford Design Engineer. Massive selection from top brands on eBay. These were often spec'd at 300+hp and that just goes to show what this motor is capable of with the right top end on it. Didnt get to actually design them. 0 COBRA GT40 CYLINDER HEADS. Same question. 300 HP is fairly easy with GT40'sfor that matter even a set of mildly cleaned up early castings. The "P" heads have 4 bars there. 90 intake valves. They came with a 351 roller I bought and the guy said they were GT40 marine heads that he picked up at the Columbus all Ford swap. Jul 13, 2005 · These are supposed to be a marine version of the GT-40 cast heads. So far I havent found a lot of lower intake options. It is rated 245 HP. We are offering a pair of original Ford Cobra 5. May 16, 2011 · Aluminum Edelbrock Performer heads, stage 2 port work, 1. Feb 13, 2008 · I slapped a 2001 Ford Explorer salvage yard 5. They don't compare with an aluminum head, but they are still a good investment for a budget build on a 351. I have a 1996 Ski Nautique with a 351w pcm motor. Oct 30, 2009 · is there even a such thing there is a guy that has a brand new 351 from a boat he says it is a 4 bolt main and gt40 heads said that is is forged steel crankshaft,rods,and pistons i can buy this engine for 300. 23:1 reduction transmission. 0? NGK Spark Plug Set - Replaces PCM - RP030007 PCM Spark plugs for 351's, GT-40 engines Includes 8 Plugs 285 HP & Up Carbureted Plug gap . May 7, 2014 · REMANUFACTURED FORD 302 5. 6 roller rockers which is what I would recomend for anyone who wants an easy 25-30 HP's out of their current setup. 0:1 compression ratio range- assuming youre ok with running 91+ octane. 0L engine that the GT/LX 5. Oct 26, 2003 · gt-40 came on a lot of engines the lightnings obviously and the mustang gt's I even think some lincolns had them. Find many great new & used options and get the best deals for Ford Gt40 Iron 2 Bar Marine Cylinder Heads Redline Exhaust Manifold 302 351w at the best online prices at eBay! Free shipping for many products! Ford 5. Replaced it with GT40. They’re higher performance heads than the standard 351w heads. Shop Cylinder Heads & Parts for Ford GT40 with eBay Guaranteed Fit. The 1993-95 Cobra GT-40 head is little more than a marine head with larger valves and ports. Sep 17, 2020 · These guys made 353fwhp/425fwtrq on a VERY mild 347 for a truck using the Very restrictive truck efi intake manifold that had the lower only mildly ported, stock twin blade truck TB with some basic ported gt40 heads. F is for decade of manufacture in this case the 90's. 54"). The GT-40 heads continued within the Ford Explorer despite the Mustangs receiving modular engines. The ports are nothing like the GT40 heads; the valves are also small like the E7TE heads. Would these be direct bolt on replacements? Sep 30, 2004 · All HO 351w's made by PCM (1992-2002) featured GT40 heads and were given the moniker of "Pro Boss". Power Plus is the 1. Remanufactured 5. The GT40 heads were originaly designed for OMC marine before they went on Ford cars. New Ford 351 with GT40 heads The impellor is new and the pump is pumping water, (Sherwood pump G-21 or G21) The impellor has been installed twice to ensure that it was oriented correctly. 8/351W) - 351W Boat Engine Replacement Heads - I’m helping a friend repair on old ’78 boat with a 351w marine engine. Gt40 irons were casting numbers F1ZE-AA, F3ZE-AA They also have 3 vertical bars cast into the end of the head. Part number will give an indication -for example the lower intake of a GT40's part number is F2JE-9K461-BA. I have the GT40 heads. Nov 29, 2022 · In the marine genre of web sites, shop for heads for the Indmar 351W at 285HP. The flow of a water was similar to that of a water hose at idle. Remanufactured Ford 5. 5 ratio stamped rockers. They also have "MM" or "WW" depending on how you read it marked on them. I know that I have to drill the bolt holes, but is there anything else required? is it the pitch on the heads that makes a 351w different from a 5. Its not to be confused with the carb and TBI versions of the HO 351w (which had GT40 heads), which were rated anywhere from 285 to "300+". with GT-40 heads. Jan 29, 2021 · With GT40 heads, the 750 Double Pumper worked best; with the 11R heads, the 1,000 HP carb was the winner. I was wondering if anyone else has done this swap and if they Feb 11, 2017 · Is the only difference between the 302 and 351 heads the increased (1/2") bolts used on the latter. I was just considering a top end upgrade. . 8 OHV V8 engine, these cast iron cylinder heads (cast # E7TE) are perfect for enhancing your Dec 1, 1999 · There was the inevitable search of junkyards and swap meets for the popular '69-'76 351 Windsor heads, with their slightly larger intake ports and valves combined with 60. the GT-40 (1. 8 gt40 heads rated to 310 HP eec-iv using speed density (apparently o2 sensors not reliable in marine exhaust). I also would like a suggestions as far as cam and intake goes. VEVOR Complete Aluminum Cylinder Heads FORD SBF GT40 289 302 351W Mustang 175cc. Post by cgrey8 » Wed Nov 30, 2016 10:40 pm Nov 18, 2005 · The only other cast iron GT40 I'm aware of that will fit a 302 block is the GT40 style cast iron M-6049-L302/L303 wich is a 351W head that is pretty popular to to swap onto the 302 block, but that's a whole different discussion. Edelbrock 60229 Performer RPM Cylinder Head, Ford 289, 302, 351W. Yachts/boats are great but my true passion is engines and a Indmar/PCM Ford 351 HO 285 HP Spark Plugs. most 302 heads will need headbolt holes drilled for 1/2 Feb 10, 2014 · Greetings, I am considering a GT40 head swap on an EFI '88 351w. 0/302, 5. ABOUT THE GT40 INTAKE. In the early 1990s, a 260 hp (194 kW) version as well as a "HO" (High Output) version that used GT-40 heads and the Holley 4160 marine carburetor was rated at 285 hp (213 kW). 2:1 CR, windsor sr. like i said, the heads are off of a 96 mountaineer so these should be gt40 and not gt40p correct? this can be identified by the threes bars in the front of the casting from what ive read. There are several aluminum GT40 variants made by Ford Racing Performance Parts (FRPP) but the OEM GT40's and GT40-P's were both cast iron. 0020. Would you bother porting them? 3. Sep 28, 2011 · Swapping out the freeze plugs is no problem, explorers from late 97 to 2001 had the p heads and 95-97 had gt-40, the p heads flow a little better than the regular gt-40 heads due to the smaller exhaust valves and slightly better combustion chamber, p heads will have 4 bars not 3 like the std gt-40, also the p heads have a different spark plug Mar 27, 2014 · Ford gt40 351 marine verse lightning. Just look for 1. Add to Cart. Set of 8. Oct 26, 2012 · I found the article in the July 95 Super Ford mag just says Motorsport Marine 351W with custom camshaft, forged steel connecting rods, GT40 heads, standard Cobra valvetrain minus valve rotators, stock was 300HP @ 4800rpm & 365 lb ft of torque @ 3750rpm. Good luck. I’d really like to stay around no more than $400 (budget $ for right now), and I am debating on what’s more important, 1. Standard 260 hp heads have 2 ribs. heads. The block is a 351W. 0-10. I would expect a 15-20hp upgrade over the 310hp GT40 with a better cam and P heads. Are the GT40P heads worth anything significant over the stock heads on a 351W? 2. Will that effect my truck or do I just eliminate mine. Anyway - couldnt find the casting number on current head - took valve cover off but just found something i cant lookup! its a 1974 351w. P heads are more common because they were on 97. Combined with a good marine/rv grind cam they will give you more horsepower, going with anything larger than the valve size on the GT-40 would Jan 15, 2019 · 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - GT40P Heads on 351w - Hello, I'm going to be picking up a set of GT40P heads off an Explorer/Mountaineer very soon and I'm having difficulties finding if there is anything that will need to be done to the heads before they can be swapped onto my 351w. vs. Cylinder Head Style: Assembled Save 351w marine heads to get e-mail alerts and updates on your eBay Feed. P. Jul 9, 2020 · With Fords there is really no such thing as a "marine" or even marine engines,they were per Ford's designation Industrial. rjrobin2002; Apr 10, 2024; Bronco Tech; Replies 9 Views 681. The machine shop can assemble everything for extra money. Jun 30, 2008 · RE: GT40 Heads More info "The 1993-95 Cobra GT-40 head is little more than a marine head with larger valves and ports. I had stock GT40 heads stock shorty headers, GT40 Intake, 65mm tb, 204/211 dur cam, no roller rockers. 0 96 down explorer/mountaineer 5. 0 Mustang Cobra and the 5. 538 lift, 110 LSA. 8 / 351/ 250HP Reverse rotation, dipstick in block, flat tappet cam. Oct 21, 2007 · The only real difference between 351W heads and 302 heads is the bolt size. Feb 25, 2009 · Since the mid eighties and up 351s came with E7 heads, the GT40 and/or GT40Ps are definately an upgrade even for a 351W. In the early 1990s, a 260 hp (194 kW) version and a high-output version that used GT-40 heads and the Holley 4160 marine carburetor was rated at 285 hp (213 kW). Especially the GT40P's-which IIRC came on explorers, but had 7/16" head bolt holes rather than 1/2" (351 uses 1/2" 302 is 7/16"). 8L performance. I figure that's high to mid 14's in a 4500# truck. There were a few HO ford (GT-40 heads) engines that were right rotation but they were carburated. 84" intake/1. 0. 0 used the gt-40 so that would be an easy one to narrow down. 54" exhaust I can tell you that the GT40 heads and Performer intake would choke a 408ci, so if youre set on using those, then stick with 351 cubes. If I get the bolt holes drilled out will these heads work as a direct bolt on replacement? My other choice is to use Marine 3 bar GT40 heads. 0 for Sale When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Dec 26, 2011 · Small Block V8 (221, 260, 289, 5. Jan 7, 2014 · Since it sounds like you have the 351 GT-40 EFI (second picture), here are the specs: 310 HP if camshaft is replaced with SVO cam M-6250-B351 340 lb-ft of torque at 3200 RPM 8. 4cc combustion chambers Sep 28, 2015 · Pull the engine and strip the heads off. i. I yanked off all the injection, installed a Delta reground '69 351 Windsor cam, off the original roller cam core, installed an Edelbrock Performer intake and a Holley 4160 Marine 4 bbl. Remanufactured longblock/crate engine for use in many ski boat and sterndrive applications. 72 roller rockers (516 lift) that did very well on a 351 with GT-40 heads (unported) and intake. Broncobowsher. (If anyone wants those heads, I have over 30 pair of new complete ones to sell). 0? i just want to have eveything to put some freakin gt40 heads on my Remanufactured Marine Crate Engine; 1988-1994 Small Block Ford V8 351W/5. 00 complete if it is what it is if not i will keep my 94 model 351w and finish my There are two variants of these cylinder heads, one being the GT40 already mentioned and the other being the Ford GT40P heads. I think CC used the GT-40 from about 95--2002. The GT40 intake didn't come stock on any Ford vehicle except the 93’-95' Lightnings. 8L, 351W Marine Engine Longblock. Nov 17, 2012 · The stock cam in your motor is actually an old marine grind so it should haul the mail pretty good, Ford had a 351 crate engine you could buy up until a few years ago that was essentially what Mercury Marine used, a stock 351 bottom end with cast iron GT40 heads, the HO cam and a 4bbl intake that made 340hp. 8/351W) - GT-40 heads - ok guys i am needing a list of what all vehicles came with GT40 heads. Does anyone know anything about the F3JE-CA heads? Apparently they are GT-40 marine heads but aren't stamped 'GT-40'. 5-2001 explorers, just don't use 96-97 explorer gt40 heads F1ZE-AA if at all possible they have larger combustion chambers which are slightly larger than the stock E7 or E8 heads which you probably already have, don't get me wrong they will give you a hp boost just not as much as the p heads. 050, . The HO heads are factory Ford cast iron GT40 heads, which came on a few vehicles like the '93 Mustang Cobra and '93-95 Lightning. Estimated 60-62cc combustion chamber, FMS stud mounted 1. Apr 23, 2008 · He's found a set of GT40P heads and GT40 intake for pretty cheap. 8) and accomodate my stock E6TE intake manifold + indmar exhaust manifolds and have valve clearance. 6 rockers. im going junkyard hunting this next week. Jan 24, 2010 · I have read all about the the GT40 and E7 heads as a good upgrade. GT40 heads are marked by 3 ribs on the front and back sides of the heads. A special little secret is that the marine(OMC and Volvo Penta) GT40 heads come with severe duty Manley stainless valves and Crane retainers/locks and springs and can be bought super cheap because most people don't know what they are because they carry two unique casting numbers and markings that aren't in any Aug 9, 2023 · 351W marine cast iron lower and aluminum upper GT40 or Cobra intake manifolds. 0L uses a 7/16" head bolt, while 351w uses 1/2" bolts. Find a cam that will open the exhaust up a little more, your going to need that on those heads. 46") vs. They had a GT40 5. Dec 22, 2006 · Or ahre heads a marine specific thing to only be changed with other marine specific heads? I ask because I know in the newer EFI nautiques, they run prettymuch a 95 cobra R motor with all GT40 parts and I dont know if those are a parine specific part or I can go get them from a ford dealer and they will drop right on. Nov 19, 2010 · Actually the GT40's are "probably" a better head than any of the normal production heads. I'm about to buy a long block lightning marine 351 windsor from motorworks, it has the GT40 heads, and they cautoned me that the sparkplug angles are diferent fom the stock heads. Like most, I'm sure, I joined out of a life long appreciation for all things Ford Racing. 3 days ago · Crate Engine, Marine, Long Block, Assembled, External Balance, Cast Iron Heads, Standard Rotation, Ford, 351W, Each Part Number: HME-DMA1 4. OMC and Volvo used ford engine to a later date and migh have continued using them. 8 Remanufactured Ford 5. Surprisingly, the "P" exhaust port flows slightly BETTER than the GT-40. 0 came with And they also came with a bigger high lift cam The 1993 351W F-150 Lightning pickup came standard with the iron GT-40 heads also Both used the same identical cylinder head So I say, bolt those on and enjoy Feb 24, 2012 · The 1993-95 Cobra GT-40 head is little more than a marine head with larger valves and ports. Fits all HO Ford 351w engines like 285 HP Indmar 5. $648. 8/351W) - Redline Marine 351w - Saw a ad for a 351w redline marine engine. This cylinder head is identifiable by its bolt-down rocker arms and "GT40P" casting. That's '70 351 heads on an '84 Jun 4, 2020 · I just took the Gt40 heads to the machine shop to get them inspected, magnafluxed, and have the head bolt ports drilled out to fit the 351w. Comes complete with all of the top end accessories; Throttle body, coil, IAC injectors and harness, comes with fuel rails and regulator but one side is bent and don't know if it'll straighten out. May 12, 2021 · Hi, Does anyone have any info on GT40 marine heads? I’m curious if they will fit a ‘96 351w truck engine? They are currently on a 302 marine engine. Runs Holley 4 barrle 500 cfm I believe. Oct 17, 2008 · The heads on those later marine 351's sold by Ford Marine have the markings on the ends of them similar to the GT40's however, the number is E8JE-AA and later F3JE-AA. Replaces years 1975-1987 We also install special marine head gaskets-steel, copper or copper clad Jan 6, 2011 · Small Block V8 (221, 260, 289, 5. Opens Nov 9, 2023 · GT40P heads have the bad plug angles. Port volume just isn't big enough. Due to a cracked block I'm replacing my 5. When you're at the machine shop ask for GT-40p heads. The 60hp increase comment was in reference to the base (240-255hp) 351w, not the HO (285-310hp). You'll need new springs for any lift over . Buy Now. Seems the boat was a 2005 model that was involved in a fire, boat is a loss but motor untouched. We’re looking to replace a cracked head with a low cost replacement from a junkyard vehicle. This will not work on Ford 302 cylinder heads. Aug 27, 2015 · Maintenance Tips, How-Tos and Repair. Jun 5, 2006 · C9OE 351W heads have the same valves as GT40 heads (iron) C9OE 302 heads have the same valves as E7TE's. 3 in the 1/8th in my Lightning @ 4500lbs. 8/351W) - anyone have experience with GT40P heads on a 92 351W - ive got a 92 F250 with a 351W that needs a pretty serious rebuild. standard 250 H. Our cylinder heads are: Bake cleaned and shot blasted; 3-angled cut on valve seats; 100% Aug 6, 2024 · Perfect, sort of. to be more specific i have 95 svt cobra gt40 heads that i want to bolt onto my 5. I am running commander marine exhaust manifolds. The GT-40 heads average a 30HP increase alone, over the stock HO heads. A few questions: 1. kwdjesm isnb nsbi qngs ketf zqxp mdphaq ynlfg chuirur raotyvqrq