In a '92 f350. Currently has longtube headers, full custom exhaust and a "homemade" intake. (Just filters in place of the box). it runs okay, leaks a decent amount of oil. Truck has 185xxx mikes but heads have "remanufactured" stickers so I'm assuming something happened before I obtained the truck. It has enough power to get me where I'm going and reasonable amount of passing power but only in the higher rpms. I often find myself at 3/4 to full throttle in everyday driving just to get around. I'd like a bit more power without majorly sacrificing 1. My wallet 2. Fuel mileage (get about 10.6 now) and 3. Drivability. I'd like to stay fuel injected, and it seems cheaper to keep the speed density system. I'm thinking .030 rebuild, a speed density friendly cam,intake, possible heads (gt40?) And whatever else needed to accomadate those things. Any and all input is greatly appreciated. Price estimenta and links are welcome too
thanks, shelbygt00

 

what you've listed is a pretty good build and should be fairly cheap. GT40's are going to be found on ebay or junkyards and will probably need refurbished but total cost should be under 1000, as far as the other stuff..... http://www.summitracing.com/


also to compliment the GT40s and economy look for a mid-range/torque cam. good luck and keep updating.

 

Usually I see the 35-255-5 comp cam recommended for mild builds that are speed density.
Trav

 

In a flat tappet motor yes but not in a roller motor.. use the 35-512-8.

 

Aren't 92 351s flat tappets?
Trav

 

Damn.. I thought it was a '95. In that case the Crane 444232 is my suggestion, the 5.8 can use a little more duration than the 5.0

 

ive done the typical budget build...a lot of things I wish I'd spent money on after the fact - like stroker kit, intake manifold, roller cam, etc....but I had a lot of money wrapped up into other stuff at the time so budget/junkyard build it was (first time in my life I didn't "misewell" a build into the thousands)


after its all said and done, I probably have 1500 into the engine (full rebuild, cost of heads, head studs, cam, springs, etc) and a few hundred in other parts like wideband o2, fluids, exhaust work (going from 302 to 351) etc. I rebuilt the donor engine with cast pistons, re-used crank and rods, new bearings/rings etc.


I pulled the gt40p's out of an explorer in the jy for 85 bucks, which I wouldn't do again - used heads are cheap enough on craigslist not to be cramped in that engine bay for a few hours. I ported them and had them cleaned and milled for compression, comp cam and added valve springs according to the cam card, roller rockers (a few hundred miles after initial fire), and ported the hell out of that awful 351 intake.


after the build I found adapters from Price motorsports to run the 302 intake on a 351, im curious to try the 302 intake but I don't like the added possibility of failure with all those gaskets....but I do want to get rid of the 351 intake eventually, just cant justify spending copious amounts to do so.



if I could go back, I absolutely would have spent the money on a stroker kit at the very minimum. 408 is much better than 361.


your fuel mileage has only one way to go, and that's up. I always got 9-10 with my 302, 37's, and 4.10s. im averaging 12.5-13.5 when im on the street only, with a best of 14.5 on a highway trip I take a few times a year (purposely stayed out of it at modest speeds once). some of that increased efficiency comes from the ease of airflow, and a lot of it comes from the compression. either way, that's a massive jump from what was.

blah blah blah

 

Id like to stay away from a stroker kit just due to having to swap to mass air. I saw a thread where someone had a very similar build with 24# injectors using a computer form a 460 to fire them. It seems like this might be route I'd like to take. He seemed to talk like injectors made a huge difference. I'll probably go with eBay gt40 heads (thinking about 250-400), do some minor porting and port the windsor intake a bit. Or just get an edlebrock upper and lower for about 600 or so. The rebuild kit itself is about 400. And 250 for the cam is gonna put me at 1650 right there. Not including injectors, possible rockers. What is involved with putting roller lifters in a non roller motor block? Is it doable? I believe you can put non roller in a roller motor but I'm not sure about the other way around. But he way this is looking. I can probably have about 2grand in a good running motor. I'll do some more looking and see what I can find for a bit better prices. I'd like to stay away from gt40p heads because I already have aset of longtube headers and ddon't want to buy another if I don't have to

 

Im on the same path as you with my motor, just a little further along. Ebay is not the best place to source gt40 heads. Overpriced for the gamble you take from buying online. Go with craigslist or mustang forums have much better deals than ebay.

 

That'd be my thread you were reading

You don't need maf to run a stroker, in fact a 408 with 460 comp and injectors would work very well. You could have a custom cam ground with high lift, decent duration, and 113-114* lobe separation and it would work fine with speed density 460 comp and inj.

Untouched gt40s wouldn't be optimal, at least port them. Or find a decent set of aftermarket used or budget buy...

Gt40p heads will work with whatever long tubes you currently have, just need 90* plug boots for a few cylinders.

Not tryin to force ya into a stroker, but if you can conjure up the coin you wouldn't regret it. If you need an overbore, that means you need pistons off the bat. So if ya get that far, misewell get the stroker kit...

 

Haha still getting used to the mobile version of FTE. And after a bit more lookin into it. A stroker (I'm thinking 408) kit is probably gonna be about 1300 or so. Meaning I'll have 3grand wrapped up in just the motor easy. I don't doubt it would run amazing, but my wallet would get really mad if I did that haha. But that's good info to know, and also about the gt40p heads. I didn't know you could just use 90° plug boots hahaha, that might be way I go just because supposedly they flow a bit better and I assume, because they came in explorers, I could find em a good bit easier. I'm gonna do some research, see if I can find any good deals. What kinds of things am I gonna have to do to the heads other than port em. I've heard a lot about 1.7 rockers but is that would be worth it?