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73-87 Chevy _ GMC Trucks => Fuel Systems and Drivability => Topic started by: mikewb on June 23, 2008, 05:34:27 pm

Title: fuel reg
Post by: mikewb on June 23, 2008, 05:34:27 pm

im putting a carbed motor in an 88 chevy truck. im just going to run a regulater on the line and to the carb. what should i do with the other line? seeing as how there two of them run to the throttle body?

Title: Re: fuel reg
Post by: VileZambonie on June 23, 2008, 07:16:52 pm

Yuck, you should really keep it efi. But a regulator with a return would be ideal rather than trying to choke off the pump.

Title: Re: fuel reg
Post by: Captkaos on June 23, 2008, 08:07:44 pm

I agree with Vile on both accounts

Title: Re: fuel reg
Post by: camdenoilchange on June 23, 2008, 08:10:48 pm

i put a mallory regulator in my 89 s10 when i went from a fi 4banger to a carbed sbc. it had a port on it for the return line. got it through summit racing for about $80.

Title: Re: fuel reg
Post by: mikewb on June 23, 2008, 09:47:19 pm

i have a regular regulator with inlet and outlet. can i just leave the return line open?

Title: Re: fuel reg
Post by: 78 Chevyrado on June 23, 2008, 11:57:14 pm

Without the return line hooked up you will burn up your elec. fuel pump.  Advance has a holley regulator you can buy for around $35 or so.

Title: Re: fuel reg
Post by: camdenoilchange on June 24, 2008, 08:28:18 pm

Quote from: mikewb on June 23, 2008, 09:47:19 pm

i have a regular regulator with inlet and outlet. can i just leave the return line open?

no. you will need one with a fuel line return provision.

Title: Re: fuel reg
Post by: mikewb on June 25, 2008, 09:19:05 pm

what if i plug the return line off. it will burn my pump up?

Title: Re: fuel reg
Post by: VileZambonie on June 25, 2008, 09:24:24 pm

Theoretically the pump will work harder until line pressure rises high enough to open the dump valve back in the tank. You'd be better off just running a $15 mechanical pump