Need quick help before I put my 670 on today

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Dec 9, 2003 | 05:02 PM

K5er4Life

Thread Starter

Junior Member

Joined: Dec 2003

Posts: 4

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Car: 87 Blazer

Engine: 383 stroker

Transmission: 700r4

Need quick help before I put my 670 on today

How do I adjust the fuel pressure on the holley 670? I have a good idea of where the regulator is but I want to make sure I got the right pressure. thanks

Dec 12, 2003 | 04:50 AM

chevy8ford

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Joined: Oct 2002

Posts: 168

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From: San Diego, CA

Car: 88 Firebird

Engine: 305

Transmission: 700r4

I'm not sure, but i think you have to remove the injector tree to do it. I know that in the past people have drilled a hole underneath which gets around this i think, but i'm not sure.

Dec 12, 2003 | 08:55 PM

K5er4Life

Thread Starter

Junior Member

Joined: Dec 2003

Posts: 4

Likes: 0

Car: 87 Blazer

Engine: 383 stroker

Transmission: 700r4

Yeah I have heard that there is a screw that is behind the injectors but I dont know which one it is.

Dec 13, 2003 | 10:42 AM

Token

Supreme Member

Joined: May 2003

Posts: 1,995

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From: Toledo, OH

Car: 1992 Firebird

Engine: forged 357

Transmission: 700r4, 2200-2400 stall, vette servo

Axle/Gears: stock pegleg 2.73 drum (temp)

Re: Need quick help before I put my 670 on today

Quote:

Originally posted by K5er4Life
How do I adjust the fuel pressure on the holley 670? I have a good idea of where the regulator is but I want to make sure I got the right pressure. thanks

pop off the brass cap on the very top of the regulator. I had to drill it out because it wasn't budging... but you might have better luck. I think it uses a 1/4" allen wrench to turn.