i want to build a 351w motor for a 90 f250 4x4 5- speed. what can i do that will give me more power without a lot of increase in compression. if thats possible. its my first motor so i need help deciding what to do.

 

You could always go with a stroker kit. I did this with the 351 I built, bored it .040 over and went with a 408 kit. It should make some where around 500 hp.

 

What kind of budget do you have to work with and what power level are you after?

 

are you trying to keep the stock EFI system? And are you going to use it as a work truck? (towing and/or hauling)

 

budget is not really an issue cause my truck runs good now. i just want something to do when i get bored so im not in a hurry or anything when i have the time and money for something ill do it. i will be using it as a daily driver so i want at least decent mileage. and i do want to stay with the efi system. powerwise i want as much as possible without putting to much stress on my tranny and t case. i also dont want to have to run high octane fuel, but if i have to no big deal.

 

i just looked at stroker kits and i dont think ill be able to drop that much cash all at once with gas prices. plus with the rain us carpenters in missouri havent been workin all that much until recently.

 

A set of heads, and a custom grind cam. Open up the intake and exhaust and you will feel a noticeable increase in power!

 

what sort of intake are you talking cause i already have headman longtubes

 

Be selective when choosing/making and aftermarket intake. One that pulls the air from the coolest location is better; in the engine bay, at the lowest point that is furthest from the engine. Simply putting an open element filter on can hurt more than help. Ford ECU's are programmed to pull timing if it sees that the ACT's are elevated

 

At least you may have some work to do when the waters receede. We have a REAL drought in Texas- a work drought- you must speak Spanish to get a $12 an hour job here- but they're only taking the jobs we don't want. I would like to have the $50,000 a year plus career I spent over 25 years investing in back, but now the builders get illegal aliens to do it for $10 -$15.00 an hour and it all goes to Mexico with no taxes paid to our goverment and damned little put back in our economy.

 

yeah tell me about it the mexican have taken over every lawn job around here and almost all of the labor jobs that are scabs. my boss just told me the other day that this might be our last house for a while. but if we get the next one its 10000 sq ft. not kidding so well have work for about 8 months.

 

That's the size houses I used to contract, (did one 20,000), and this is the market that the illegals are starting to infiltrate. No white people do almost anything to a house smaller than 5,000 sq. ft., (except maybe audio/video), and the repercussions are that even the large houses just don't pay squat anymore- lumber gets worse by the day- and every house has to have bunches of radius work in it and bullnose corners, and the only white people making any money are the builders and the banks.

 

building a police interceptor 351w from a 91 crown vic. flattop pistons, retro hyd, roller cam and lifters, 1.7 roller rocker arms, ported and polished 64cc heads bored .030 over air gap edelbrock intake. How much hp will it make? I am hoping for 400 or so. what do you think?

 

wow this is an old thread. but to be able to better answer your question, what cylinder heads are you using on the motor? what compression ratio? what carburetor? what camshaft? these all are important. I really hope you arent using the stock 351 crown vic heads, they are worse than e7s

 

It might be close to that, BHP, if everything is well matched. What duration and lift on the cam? Fuel injected or carb? What size carb? Headers?
I could figure up your CR pretty close if I wanted to waste the time, but if you know it, throw it out. Without running any numbers, I would expect it to be around 9:1-9.5:1, so I think you are OK there.
A little more info, please. Then maybe Paul will run it through his Desktop Dyno, or I will if I get back here.