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At this point in the game, it's either bolt it in or ***** to the wall as far as i'm concerned, not like you have an extra engine sitting out waiting for bolt ons ever...
At this point in the game, it's either bolt it in or ***** to the wall as far as i'm concerned, not like you have an extra engine sitting out waiting for bolt ons ever...
In for a penny in for a pound.
Yeah lets be realistic. That 5k figure doesnt figure in the necessary 408 stroker kit that would have to be purchased to make it all worth it. Go big or go home.
Things to consider
The 351 needs a larger injector, flywheel weight is different between a late 302 and 351 (50oz vs 28oz, the front brackets for acc need to accommodate the wider block, distributor needs to be different, fuel rail crossover tubes need lengthened, 351 oil pan, etc.
I did a 351 swap into my 91 Mustang GT 5 speed. I reused the 30lb injectors, 75mm TB, 76mm MAF, and upper intake. I had to buy a 351 lower. For fuel rails I just cut the factory crossover tubes and used fuel injection hose and clamps to fit the Windsor lower. For a distributor, I’m using a late model TFI 351 truck distributor with a swapped steel gear.
I have a RAM flywheel balanced for the 351.
That got it in the car with 351 swap headers and 1 bracket change.
My 351 is a 74 block, .040 SRP Pistons, h beam rods, .544 lift hydraulic roller, and the key- Canfield cnc ported aluminum heads.
This is in a full weight 5speed GT with 4.56 gears. I haven’t driven it much but it’s pretty strong.
Now- I face a similar dilemma. The fuel system and intake. To properly feed a 351, you need bigger everything than a 302. Even 30lb injectors are too small for my combo. Then the drive ability factor. The computer is still stock and even with Maf it struggles to idle with the cam. I’m either going to carb it (cheap), use a carb intake with a Holley Sniper efi, or get bigger injectors and a microsquirt to try and program it.
IF I were plugging this motor into my newly acquired 88 F150, I’d probably use a carb intake and the Holley Sniper. Use the factory fuel system to feed it. The distributor and ignition could be as simple as an HEI type 1 wire distributor.
I’m not as familiar with the f150’s with motor swaps. I had a pretty crazy 302 before the Windsor and I’m hoping I’m not going to be disappointed. I spun it 7500 rpm’s and it just pulled like crazy up top.
I decided to do something different. I still may keep the 4.56 gear.
Good luck on your build. The 351 has gained more notoriety as of late. Especially strokers.
Should be close to stock compression, not sure if that's a good thing or bad thing, but besides valve clearance you should be able to throw any head on there you like without worrying too much.
Seems like a shame to rip out a fresh bottom end, I'd wait until it needs freshening up again to stroke it.
Any $500 pos 5.8 trucks up for sale in your area? Probably get what you need for free if you can part one out.
Should be close to stock compression, not sure if that's a good thing or bad thing, but besides valve clearance you should be able to throw any head on there you like without worrying too much.
Seems like a shame to rip out a fresh bottom end, I'd wait until it needs freshening up again to stroke it.
Any $500 pos 5.8 trucks up for sale in your area? Probably get what you need for free if you can part one out.
Yeah at first when I read up on those pistons I wasn't so sure if I wanted them or not but now that I am learning more about how engines work and the math/science behind it I think the rotating assembly is going to stay. Like you said I can basically throw (almost) any head on that thing and not worry.
I have been keeping my eye out for a truck with a blown 5.8 EFI motor. Trying to cheap out on as much of the little stuff as I can because I know the expensive stuff is coming LOL. After the holidays I will have a better idea of how much $$$ I can really sink into this project. The more I look at it, the more I realize that a MAF conversion is going to have to happen, and probably needs to happen first. To be continued...
Yeah a MAF conversion is kind of required as I understand it. I'm going to try and make mine work under SD, but when it comes time to do the bottom end (stroker), I just can't see the ecu being able to handle that much air/fuel. Your 94 should have everything to get you started on that, would have to check the wiring diagrams but I think theyre more or less the same execpt the injectors/knock sensors.
My understanding is that some 95 california bronco's have 5.8's with factory maf, and possibly some 95-97 f250's. If a person can get a hold of one of those and it works, might save some headaches with expensive aftermarket tuning down the road. I guess there's always the mustang ecu, but i haven't really looked into what's required.
I'm kind of boned in that area as I have an e4od I plan to keep (and upgrade). So I basically have to find a truck ecu. Getting harder and harder to parse some of the older forum posts out there as many links now lead to nothing.
Since my truck is a manual transmission there is no factory way to change it into a MAF truck. Ford, AFAICT, never made a MAF truck 5.0 or 5.8 with a manual transmission. There is a 6 cylinder MAF manual in 96 that I have seen, but no 302 or 351.
I have been looking at fiveology racing's MAF kit. They provide an injector overlay harness, a new computer that can be tuned to handle different injectors, etc. Probably we the way to go when it is time. Not cheap but nothing will be for this kind of stuff.
11-07-2017, 07:45 PM
