Edelbrock Performer or Thunder AVS?? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 02-27-2005, 09:40 PM
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Edelbrock Performer or Thunder AVS??

Just putting the final touches on my 350ci SBC, comp xe 268H, performer intake, Sealed Power Flat Top pistons...running a TH350 in a 65 Chevelle.

I was thinking of selling my Performer Carb and getting the Thunder AVS? Would it be worth the change?

Don't know much about them except that they are Vaccum secondaries instead of mechanical on the performer?

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Old 02-28-2005, 08:07 AM
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i know the flange is different,but have you looked into a square bore style holley .holley makes probably/arguably the best carb out there. a adapter plate works fine. stick with vacuum secondaries.

edelbrocks,carter,rochester,quadraJ(not that bad) dont have the tuneability of the holley. on a performance motor i want the extra adjustments.

Last edited by spinn; 02-28-2005 at 08:13 AM.
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Old 02-28-2005, 05:29 PM
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The Holley 4011 is a killer carb. The 650 DP would work very well. The old Holleys are stoneage technology. The new Holleys use all the same tune up parts and have some new tech add ons. They also have the one gasket above fuel level like the Q Jets. They are cheap on Ebay. I guess people just didn't like the look. I think they are allright.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33550&item=7956410 515&rd=1&ssPageName=WDVW

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33550&item=7956440 911&rd=1&ssPageName=WDVW
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Old 02-28-2005, 09:20 PM
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The secondary air valve is screw-adjustable on the AVS, whereas on the Performer (AFB), it's not. Otherwise, they're about the same.
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