Mechanical fuel pump for a 540?

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Oct 18, 2003 | 08:45 AM

Flareside

Thread Starter

Safety Car

Joined: Dec 1999

Posts: 4,148

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From: Roxbury NJ

Mechanical fuel pump for a 540?

I'm getting to the point were I'll need a fuel pump, so it's decision time. Do you guys think I can stick with the stock 3/8 fuel line and a mechanical pump? I've been looking at the Holley stuff, and they have a 110 GPH pump that doesn't require a regulator, and a 130 that does require a regulator. Carter has a 172 GPH. I'm trying to keep the tripower motor as stock looking as possible, so avoiding the regulator would be a good thing if possible. I have 3/8 tubing and AN fittings for all the tripower pump to carb plumbing.

The engine is a 540 with AFR heads, 252/260 @050 duration flat solid cam (110LSA), and 68 tripower intake.

Anyway, the shortblock is finally finished, and it only took me two years! :lol:

I decided to paint everything Chevy orange:

Oct 18, 2003 | 10:11 AM

Cignificant

Intermediate

Joined: Oct 2003

Posts: 48

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From: Richmond VA

Re: Mechanical fuel pump for a 540? (Flareside)

What carb(s)? I use a Holley 130 mech pump in my boat to feed twin 750's into a B&M Blower (502ci). It doesn't require a regulator. Keeps pressure at 6-7# most of the time - drops to about 5# when I get on it. I ran 1/2" fuel lines, although the inlets/outlets on the pump are 3/8".

Oct 18, 2003 | 02:38 PM

69ttop502

Le Mans Master

Joined: Mar 2001

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From: Watkinsville, GA and Glen Cove, NY

Re: Mechanical fuel pump for a 540? (Flareside)

Joe, I am trying to get a definitive answer to this myself on whether the 3/8 inch line is enough. I am going to sump the tank and will run a braided line if I need the 1/2 inch. Your engine looks awesome baby. Just got mine off the dyno and will be posting the results Monday when I go get the motor and the dyno sheets. Bill.

Oct 18, 2003 | 02:50 PM

Flareside

Thread Starter

Safety Car

Joined: Dec 1999

Posts: 4,148

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From: Roxbury NJ

Re: Mechanical fuel pump for a 540? (Cignificant)

Quote:

Thanks guys. The motor has three 2-barrel Holleys, around 1000 cfm or so total.

Bill, screw the dyno sheet, what did it make on the dyno? :D :lol: :lol:

Oct 18, 2003 | 02:58 PM

Guru_4_hire

Team Owner

Joined: Apr 2002

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From: All humans are vermin in the eyes of Guru VA

Cruise-In IV Veteran

Cruise-In V Veteran

Re: Mechanical fuel pump for a 540? (Flareside)

Barry grant might makes a good product....

Oct 19, 2003 | 08:34 AM

79VetteMike

Melting Slicks

Joined: Jan 2003

Posts: 2,804

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From: OKC Oklahoma

Re: Mechanical fuel pump for a 540? (Flareside)

That's a pretty engine so far.

Oct 19, 2003 | 09:25 AM

Jughead

Senior Member since 1492

Joined: Aug 2000

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From: Just because I'm paranoid doesn't mean people aren't out to get me...

St. Jude Donor '09

Re: Mechanical fuel pump for a 540? (Flareside)

Looks like you're gaining on me Joe. I gotta get busy. :yesnod: Love the pics.

A lot of guys on the chevelle forum are using the Carter M61045, 172GPH, 7-8.5psi. I'm not sure which I'll use since I have just a tiny rat! :D

Oct 19, 2003 | 05:23 PM

1Bad69

Safety Car

Joined: Nov 2001

Posts: 3,728

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From: Maple

Re: Mechanical fuel pump for a 540? (1970 Stingray)

i am having the 130gph Holley installed on Monday...i have a holley 80 now and when i hit it hard the pressure drops to 3 give or take a half psi.

from the info i got the 3/8 line is fine for the pump....i can let you know next week how it works on the 454.....