Holley Carb
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Joined: Aug 2008
Posts: 98
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From: North Muskegon MI.
Holley Carb
I have a Holley 650 spread bore that i got cheep, am in the process of rebuilding. I've been looking on the net to see what this was used on, no luck so far other than it should be jetted w/60-63. It's a 6499 spread bore that i would like to put on a 1973 350 Headers, summit dual plane,4-speed,4:11's and HEI. That is all i,ve done to the L-82 so far. Any ideas on jets and power valves? It.s a double pumper W/ 2 power valves. Thanks for all the idea's and help i've found on the forum !!!!!
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
It wasn't used on anything. It is a spreadbore(Quadrajet, Thermoquad...) replacement carb. Keep it stock exactly as Holley put it in the box until you determine conclusively something needs to be changed. And it's not likely you will find anything that does need tuning (jets, powervalve, squirters, pump cams or anything else).
