carb question

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Nov 22, 2011 | 06:54 PM

79 vette head

Thread Starter

Burning Brakes

Joined: Sep 2005

Posts: 1,198

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From: staten island new york

St. Jude Donor '10

carb question

looking to replace my holley 650 with an edelbrock 600. question is do i need one with EGR or NON EGR??? L-48 1979

Nov 22, 2011 | 06:57 PM

Tim H

Safety Car

Joined: Oct 2000

Posts: 3,593

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From: Southern Indiana

2 answers here.
1:bad move
2: carbs don't have EGRs.

Nov 22, 2011 | 07:14 PM

79 vette head

Thread Starter

Burning Brakes

Joined: Sep 2005

Posts: 1,198

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From: staten island new york

St. Jude Donor '10

response to tim: why is it a bad move??? and why does the carb come EGR or NON EGR then

Nov 22, 2011 | 08:37 PM

scottyp99

Le Mans Master

Joined: Mar 2008

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From: Oxford MA-----You just lost the game!!!!

Quote:

Originally Posted by 79 vette head

response to tim: why is it a bad move??? and why does the carb come EGR or NON EGR then

To put it simply, some engines have an EGR valve, some don't. it operates off of engine vacuum, and some carbs have an EGR vacuum port, others don't. So, it's the engine that has an EGR valve, not the carb, but carbs meant to go on an engine with an EGR valve will be set up for it. S, you need to figure out if your engine still has an EGR valve (alot of them have been removed), and, if so, do you want to keep it.

Scott

Nov 23, 2011 | 10:52 AM

69 Chevy

Melting Slicks

Joined: Aug 2008

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From: Lehigh county Pennsylvania

It's only a bad move if you don't plan on ever rebuilding it yourself. In general, Holley carbs are more user friendly...tweeking/refurbing...than other brands, although I have no experience with their smog carbs.