Carb size 454bbc - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fdbdw · 04-27-2020, 11:15 PM

Spent hours on the internet researching and I’m still no closer to a decision.
New 454 crate motor with headers.
Currently running an Edelbrock AVS2 650cfm that was on my old motor,wondering if I should go bigger.
I’m going to stick with Edelbrock because I have a ton of rods, jests, springs for tuning but mostly because I have a performer RPM fuel pump and would have to replace it to run a Holley.
Choices I’m looking at: Performer 750 cfm and AVS2 800cfm , mainly considering the 800 because I like the AVS2 and that model doesn’t come in 750.
What’s your thoughts, do I need a bigger carb?

04-27-2020, 11:15 PM	#1
fdbdw Registered User Join Date: Jan 2009 Location: colorado springs Posts: 479	Carb size 454bbc Spent hours on the internet researching and I’m still no closer to a decision. New 454 crate motor with headers. Currently running an Edelbrock AVS2 650cfm that was on my old motor,wondering if I should go bigger. I’m going to stick with Edelbrock because I have a ton of rods, jests, springs for tuning but mostly because I have a performer RPM fuel pump and would have to replace it to run a Holley. Choices I’m looking at: Performer 750 cfm and AVS2 800cfm , mainly considering the 800 because I like the AVS2 and that model doesn’t come in 750. What’s your thoughts, do I need a bigger carb?



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