351 EFI Performance
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Laughing Gas
Joined: Jan 2004
Posts: 960
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From: Spring Texas
351 EFI Performance
OK, I have done several searches and all come up empty so here goes. Lets say I want to buy a used 351 out of a 93 F-150. I will be getting a AOD transmission and as the book says I will not be getting a roller cam engine. Lets also say that I am having it rebuilt and I do want an all around good low maintenance but powerfull motor. What should I have done to the motor for good horsepower and a compromise but realiability and good gas mileage. Ed 
New User
Joined: Sep 2011
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I am also wanting to put a racing cam in my 1991 351w. can i keep the rest stock the ingnition system has plenty of spark. the efi works great. i am also wanting to install headers and a mallory unilight dist. what do you guys think?
my question is how much can i get away with with out having to do a holley retro efi. i want to get the most power i can and keep the stock intake look
1991
f 150 2wd auto transmission.
do i have a c6? my tranny code is E
thanks
my question is how much can i get away with with out having to do a holley retro efi. i want to get the most power i can and keep the stock intake look
1991
f 150 2wd auto transmission.
do i have a c6? my tranny code is E
thanks
Senior User
Joined: Nov 2008
Posts: 498
Likes: 0
The formula for performance upgrades is about the same for a 302/351 in a truck with the stock intake. There is plenty of performance within the stock drive train parameters.There are quite a few people who have done it and there is always lively discussion on the 87-96 boards.
A good stock rebuild with attention to detail can produce excellent results. A little more compression, mild speed density cam accompanied by some good bolt ons will do well.
As far a the engine rebuild itself. I would suggest the first step is to find a machine shop to deal with. Without telling the Machinist what to do, I would get a light flattop piston, calculate the increase in compression to bring it upwards of 9/1 but not over 10, larger valves and almost any mild speed density compatible cam will be a big improvement.
A good stock rebuild with attention to detail can produce excellent results. A little more compression, mild speed density cam accompanied by some good bolt ons will do well.
As far a the engine rebuild itself. I would suggest the first step is to find a machine shop to deal with. Without telling the Machinist what to do, I would get a light flattop piston, calculate the increase in compression to bring it upwards of 9/1 but not over 10, larger valves and almost any mild speed density compatible cam will be a big improvement.
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