Ive been wanting to swap over my tpi setup to a carb setup soo badly for quit some time now. my question is that do i have to have my electric fuel pump wit a regulator or can i run a mechanical pump and get rid of my electric in take one? i got a '69 chevy block under the hood so idk if that means anything special, i kno some newer blocks have the oil cooler lines but i dont.

 

You can do it either way. Using a mechanical pump will require dropping the tank, removing the electric pump, and installing a carb pickup line, but using the electric pump will require a $80 RETURN STYLE fuel pressure regulator such as the Mallory 4309 - owners choice.

 

Ok cool well i think i'll go wit the regulator, i dropped the tank once and aint gonna do it again. wat psi should the regulator be set at?

 

5-7 psi for carb. If you get the mallory, do not hook up a vacuum line to it - it makes tuning impossible - it's strictly for a blower or something.

 

Ok thanks for the info. How would i wire up the fuel pump relay and all tht good stuff when im taking out the harness and everything?

 

If I were to do mine again... I would have got the regulator and used the stock electric fuel pump to avoid the need to re route fuel lines and mount a new pump. Also! I dont think I would have went for the carb with the vacuum secondaries or electric choke. These two features seem to cause me nothing but prooooblems. I like the simple stuff, less things to go wrong.

 

IIRC you are the one with the Painless wiring harness and issues, right? You can put a relay under hood, with one side going to pump, other side going to battery, then add a ground and a hot-in-run on the other prongs - thus when key is turned on, relay gets energized, sending battery poer to the pump, and pump only gets juice whrn key is on.

 

Wow tht seems pretty dang simple, gonna have to do some research an hunt down the rite wires for the pump and everything