As of right now i have a 155 fuel pump in my car. Since the accident i am in the process of swapping everything over to shell. I am going to be doing a 331 stroker with trick heads, custom cam? and intake. I was wondering what size injectors, and do i need a bigger fuel pump, or can i kept the 155? Also what size meter should i get, i want to go with pro M! Thanks guys
fuel pump
- Thread starter load71
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$uperstang
New Member
$uperstang
New Member
Injector and pump size are dependant upon hp levels. Let me know what power level you will be at and I can run the numbers for the injectors. Here is the info on fuel pumps...
Ford EFI Options____N/A 80%________Boost 80%
110_________________240hp__________200hp
155_________________340____________280
190_________________420____________340
255_________________560 ___________460
Running the pump at 80% of its full capacity keeps the pump from overheating, which extends its life, and provides a margin of safety for max output runs. Same applies to injectors.
By the way these are flywheel numbers, not rwhp.
Ford EFI Options____N/A 80%________Boost 80%
110_________________240hp__________200hp
155_________________340____________280
190_________________420____________340
255_________________560 ___________460
Running the pump at 80% of its full capacity keeps the pump from overheating, which extends its life, and provides a margin of safety for max output runs. Same applies to injectors.
By the way these are flywheel numbers, not rwhp.
I would go with 30's or 36's they say 24's are good for 350 or so but there is no room plus you'll be running the injector to hard you want to be around 85% duty cycle for an injector... you can make it with 24's but if your buying them anyway I would run one of the other two and go with a 80mm mass air as for the pump it might work but you will probably run out of that on the top end also with a 155 I would just get the 255 and be done with it.....
Daniel50
New Member
buy a 255lph and be done with it. will support your fuel system for anything just about you do and all the extra fuel is sent back to the tank
vikingpower
New Member
I've had a 255 pump for about a year now, no probs so far with my mild setup... it did burn up some of the factory wiring though so I replaced with an inline 12amp fuse and 12 guage wire I think
