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i'm currently upgrading my fuel lines and fuel pump holley red. what do i need to change to run a 770 holley carb on a 400 mod sbc?

I pulled my stock tank and bought an aftermarket sump . I had it welded on after using a hole saw and cutting a 4" hole in the bottom of the tank . I ran 3/8 " aluminum fuel lines from the tank to the fuel pumps that are mounted on the crossmember right in front of the tanks . The regulators are up front . I would probably run 1/2 " if I did it again , but have not had any problems with fuel pressure . I run a blue pump for the motor and a red for the spray . Alot of guys just cut the bed and run fuel cell . That's cool , but just not my style . Hope this helps

I moved my stock tank to behind the rear end and mounted crossways between the frame rails. I had all the smog lines plugged and had a 1/2 inch bung welded in into the lower passenger side of the tank. I run 1/2 inch aluminum line to a mechanical pump. Got QFT 750 and run a 150 shot with no pressure problems.

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Money can't buy happiness, but it can buy horsepower...and that's kind of the same thing...

thank you i had just bought 3/8 line and was about to cut the tank. i'm drilling the stock tank and putting a new pickup in it im just going to run 1/2 then what fuel presure regulater did you use?

I run a 4 port holley regulator. One port to each side of my carb and the third to the fuel solenoid for the nitrous.

_________________
Money can't buy happiness, but it can buy horsepower...and that's kind of the same thing...

when you did your new 1/2 bung did you use a internal sock?

No, have billet filter between tank and pump, then another filter between pump and regulator.

_________________
Money can't buy happiness, but it can buy horsepower...and that's kind of the same thing...