Mechanical fuel pump for a 540?
10-18-2003, 08:45 AM
#1
Safety Car
Thread Starter
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:
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:
10-18-2003, 10:11 AM
#2
Intermediate
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Location: Richmond VA
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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".
10-18-2003, 02:38 PM
#3
Le Mans Master
Member Since: Mar 2001
Location: Watkinsville, GA and Glen Cove, NY
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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.
10-18-2003, 02:50 PM
#4
Safety Car
Thread Starter
Re: Mechanical fuel pump for a 540? (Cignificant)
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".
Bill, screw the dyno sheet, what did it make on the dyno? :D :lol: :lol:
10-19-2003, 09:25 AM
#7
Senior Member since 1492
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
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
10-19-2003, 05:23 PM
#8
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.....
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.....
