masseyiroc

when changing to carb from tpi is it necssary to remove the factory in tank feul pump and use a mechanical pump or can i just get a regualtor and use the old pump.whats involed what do i need?this is a 300hp motor

88Camaro350

You can just purchase a nice 3 port fuel pressure regulator like a mallory unit. Or if you want get a carb intank pickup and run a mechanical pump. It would be easier to run a regulator like I did.

masseyiroc

so a 3 port regulator..thats it ?when i chop the wires from the tpi harness the feul pump wires wont get messed up?

masseyiroc

3 port regulator thats it?how much hp will the stock pump support?hum... maybe i should change my own car back.this is a friends car where working on now

daverr

iTrader: (1)

hey 88 camaro 350
im curious as to how your accessories are setup .Looking at the picture , looks like theres a serpentine belt.are u running an alternator only???or with power steering???

AutoX86Z28

well i am using the 3 port regulater as well. i did also get a fuel pressure guage to see what psi im running. the stock intake pump puts out about 60 psi, the mechanical pump will put out 5-7.

make sure you run a return line. if you don't that 60 psi will push through the regulater and overflow your carb. the return line also cools down the fuel pump. i highly reccomend the mallory 3 port regulater. if you get a cheap $25 regulator from autozone, itll break in about a week.

i was running about 7 psi and the car ran perfect. the horsepower your motor will not matter. however if you start to get some serious horsepower, i would consider a better/bigger fuel pump. you shouldnt have to worry about that with that motor.

AutoX86Z28

ALSO, why are you chopping wires from the harness?

masseyiroc

unplug chop whatever....anyways ,what about my car it runs in the low 12s in the 1/4 will that stock pump support my engine?what are the specs on the factory pump?

88Camaro350

I am running the serpentine setup...without the pass side bracket at all. Running alt, wp, crank and ps. I used an old style bracket to make my alternator adjustable. Works good.

However AC is back on so I have that bracket and the tensioner and stuff setup again. Looks alot different under there now.