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351w Guru's Help!!

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Old 09-10-2007, 10:16 PM   #1
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Default 351w Guru's Help!!

Alright guys, as some of you may know Im swapping out my 302 for a 351w EFI that I bought. I wanted to know should I keep it EFI or go to a carb. The only reason I was wondering is one because I heard carb makes better power and two its cheaper to do carb not to mention less of a hassle than setting up all my EFI stuff again so just bare in my that this isa Daily driver for now but pretty soon will be a weekend only car. With winter coming up most the time it will be garaged and I will drive my honda civic that I hate being seen in. Thanks for the help. Also if you have done this before please help me out with a setup a could put on the 351w. I was looking into doing something with patriot heads, i heard from a friend that runs them that they flow better than trick flow, I also wanted to get into something like a eddy or a holly carb/intake whichever I go with, and a comp cams thumper hydrolic roller cam. Let me know what you think. Thanks!!
94 gt 5.0
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Old 09-10-2007, 10:42 PM   #2
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Default RE: 351w Guru's Help!!

its false that you cant get as much horsepower out of efi as a carbed setup. just ask the carbed 351w that i have outrun with my 306 efi. its all in setup of the motor and the knowledge to tune it properly. the thing is if your a rookie with efi tuning your prolly better off with the carb and you have to have patience with an efi motor or you will go nuts. efi compensates for a lot of variables a carb wont hence the knowledge must be had for tuning for the conditions of weather and such. whereas efi when not tuned properly can be a nightmare to deal with hence once again comes in the knowledge of tuning one. bottom line is that i could take two identical motors and have a pro setup the carb and me setup the efi then go to a dyno on a 100 degree day with 98% humidity and a temp falling at 2 degrees an hour and tell you to adjust the carb and i will outrun you everytime. then have the efi program scrambled and put you in that car and let you tune it while i tune the carbed one and i would prolly still outrun you. its not knocking you im just makin g a point. KNOWLEDGE IS THE KEY!!!! by the way if your gonna go with the eddy intake it wouldnt hurt to look at getting a set of eddy heads flow matched to the intake.


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Old 09-10-2007, 11:21 PM   #3
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Default RE: 351w Guru's Help!!

Carb makes little more power, due to little less restriction
EFI will have little more of a set and forget tune.

only difference

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Old 09-11-2007, 12:18 AM   #4
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Default RE: 351w Guru's Help!!


I just got my car tuned thursday. I made 360 rwhp and 371rwtq. With the 5.8 lightning mass air computer on a "safe" tune and a 9.5:1 c/r. It was a head ache, but I'm glad I went this route...I live near mountains and I would hate to have to adjust the carb before going up the hill.

94' GT 5-speed vert
357w to much to list.
360rwhp/371ft. lbs... my obsession

98' mark 8 lsc... my DD
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Old 09-11-2007, 08:53 AM   #5
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Default RE: 351w Guru's Help!!

So i am going to still with EFI sounds best just wanted input ill go through the hassle. I have a bronco computer should I get the lightning computer or will my mustang comp work?
94 gt 5.0
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Old 09-12-2007, 12:01 AM   #6
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Default RE: 351w Guru's Help!!

I am going to run a carb on my 351. The car can run cooler than it can with EFI and I feel I could always get more horsepower out of a carb than EFI.
Ordinarily he was insane, but he had lucid moments when he was merely stupid.
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351w, cam, carb, dyno, efi, heads, history, patriot, thumper

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