Stock mechanical fuel pump on 454. How much HP will it support?
01-26-2004, 01:31 PM
#1
Race Director
Thread Starter
Stock mechanical fuel pump on 454. How much HP will it support?
I'm looking to get about 450-500HP out of my 454. What are my options.
I don't want to listen to a garbage disposal of an electric Holley either.
Thanks.
I don't want to listen to a garbage disposal of an electric Holley either.
Thanks.
01-26-2004, 08:25 PM
#2
Safety Car
Re: Stock mechanical fuel pump on 454. How much HP will it support? (vvv90)
Depending on how old your pump is (original?), I would consider replacing it. I am running an Edelbrock 100+gph mechanical pump, and my 454 puts out ~525hp at the flywheel.
01-26-2004, 08:45 PM
#3
Race Director
Thread Starter
Re: Stock mechanical fuel pump on 454. How much HP will it support? (WA 2 FST)
Depending on how old your pump is (original?), I would consider replacing it. I am running an Edelbrock 100+gph mechanical pump, and my 454 puts out ~525hp at the flywheel.
:cheers:
01-27-2004, 12:31 AM
#4
Re: Stock mechanical fuel pump on 454. How much HP will it support? (vvv90)
i had a 80 gph holley on and it was low pressure at wot...switched to a 130 gph and everything is fine...i am at 350rwhp...
01-27-2004, 01:42 AM
#5
Race Director
Member Since: Feb 1999
Location: In Dreams There Is Truth Ohio
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Re: Stock mechanical fuel pump on 454. How much HP will it support? (vvv90)
your stock pump will be fine. Factory used the same pump on the L-88's and the ZL-1
01-27-2004, 01:01 PM
#6
Race Director
Re: Stock mechanical fuel pump on 454. How much HP will it support? (GDaina)
:iagree:
:thumbs:
your stock pump will be fine. Factory used the same pump on the L-88's and the ZL-1
01-27-2004, 02:28 PM
#7
Race Director
Thread Starter
Re: Stock mechanical fuel pump on 454. How much HP will it support? (Ironcross)
:eek: Wow! I would never had guessed my stock pump would suppot 550HP. Do it rob the motor of much HP? I guess that's the only reason to go electric.
01-27-2004, 07:08 PM
#8
Melting Slicks
Re: Stock mechanical fuel pump on 454. How much HP will it support? (WA 2 FST)
I run the Edelbrock 110gph mechanical pump on my 406 and it keeps up just fine. I had starvation problems with the Q-Jet carb even with this pump and went to a Holley 3310 which solved the problem.
01-27-2004, 07:52 PM
#9
Re: Stock mechanical fuel pump on 454. How much HP will it support? (vvv90)
If you go to an aftermarket pump go with the Edelbrock because the Holly is not fully adjustable on the inlet and outlet, couldn'nt use it on my 427. :seeya
01-27-2004, 11:14 PM
#10
Drifting
Member Since: May 2003
Location: Melbourne, Victoria, Australia, the World
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Re: Stock mechanical fuel pump on 454. How much HP will it support? (vvv90)
The stock pump will work but Chevy did have a different pump for the high horse Big Blocks.
It may have been for the fuel lines or some other reason but it lists differently for the high horses.
:cheers:
It may have been for the fuel lines or some other reason but it lists differently for the high horses.
:cheers:
01-28-2004, 02:43 PM
#11
Race Director
Thread Starter
Re: Stock mechanical fuel pump on 454. How much HP will it support? (RHD '68 L89)
Well, I did notice that my fuel line looks like it's only 3/8" which worries me.
:eek:
:eek:
01-28-2004, 03:28 PM
#13
Race Director
Re: Stock mechanical fuel pump on 454. How much HP will it support? (vvv90)
It should not worry you. All performance Chevys used 3/8 lines including L88`s, LS7`s and the ZL1`s all of which are capable of 600 honest HP running low 11`s and 120+ mph. on stock pumps. :thumbs:
