Im looking for a fuel system diagram for my 1985 Chevy C10 to figure out how to run a 2nd return line to my tanks. Can I just "T" off at the OEM fuel pump back to the original return line?


Asked by Aug 03, 2015 at 10:18 PM about the 1985 Chevrolet C10 Base

Question type: Maintenance & Repair

I just bought a new Crate 350 LB 5.7L engine. Went from a stock 305 and now its pretty
much all custom. I have a OEM mech fuel pump, but new edelbrock carb wants less than
6psi than the 10psi that the mech fuel pump is pushing. I have a Holley fuel press reg but
I want to "T" off back to the fuel pump return line. Is it possible? Plus I can't locate ANY
diagrams for the fuel system anywhere, including the Haynes book.

Any ideas?   Thanks

5 Answers

Kelly Mayo

yes.. higher dollar systems use the return line...i still dont. and if you click on my pictuct you will see a fuel line into my regulator feedind a dominator and 2 stages of nitrous...i dont run a return because tme fuel in my line is not in there long enough to get hot..also..a return will keep a pump cooler and a little bot quieter..but anything stock or a little bigger is a you have a fuel cell..cause you really dont want a return..put a $20.00 fuel pressure gage oi/in the holly reg.and set it at 5lbs at 4000 rpm ..want to add anoyher return line in to the tank do you... dead head it at the holly reg with one line in bottom one outlet pluged and other outlet to carb...a return system with a big pump/volume only returns the fuel to the tank to keep it a little colder

Kelly Mayo

i rushed thru that >

Kelly Mayo

let me find what you need.>ill look

Kelly Mayo

omit the red!

Kelly Mayo

here do 2a > fuel_pump_wiring_diagram_110_140_0003.pdf

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions


Looking for a Used C10 in your area?

CarGurus has 135 nationwide C10 listings and the tools to find you a great deal.


Search Chevrolet C10 Questions

Chevrolet C10 Experts

#1 CaptPKelly
Reputation 440
#2 Rowefast
Reputation 160
#3 tennisshoes
Reputation 140
View All

Related Models For Sale

Used Chevrolet Camaro"
798 Great Deals out of 38,849 listings starting at $2,650
Used Chevrolet S-10"
13 Great Deals out of 1,811 listings starting at $1,749
Used Ford F-150"
3,272 Great Deals out of 216,641 listings starting at $1,500
Used Chevrolet Corvette"
431 Great Deals out of 20,238 listings starting at $3,688
Used Ford Mustang"
736 Great Deals out of 41,064 listings starting at $900
Used Ford F-100"
167 listings
Used Chevrolet Impala"
928 Great Deals out of 35,693 listings starting at $1,500
Used Chevrolet Blazer"
1,650 listings starting at $1,999