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Old 08-19-2015, 09:37 AM   #6
jmking9
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Join Date: Sep 2006
Location: Riverton KS
Posts: 832
Re: Which Holley is Best for Me?

Quote:
Originally Posted by luvbowties View Post
I'd say it is your choice, as either, properly tuned, should work well with your engine. Congrats for realizing you do NOT need a 750. A 600-650(or 670)is plenty on your engine. Note: all this is just my 2 cents.

BTW: Both those carbs, although pricey, are beautiful.
Sam
Yeah a 750 would be way too much carb for this engine combo. Going by the formulas that most use, a 650 or 670 is even a little bit too big.

Quote:
Originally Posted by luvbowties View Post
Hey, jm, the owner of this (huge business and warehouses of inventory) speed shop--local to me--runs these carbs in the larger cfm on his personal race cars. Just a fyi.
>> http://www.southernrods.com/fuel-sys...es-600cfm.html <<
Sam
I haven't ruled out a Quick Fuel carb either. A friend of mine has ran them on a couple of his cars and has been trying to talk me into one for a while now. Are they basically the same thing as a holley as far as tuning?

I guess my biggest question is whether a vacuum secondary or mechanical secondary would be better for a street driven truck. Holley says that the Double Pumper is more for a lightweight car with a high stall. So that has me leaning more toward the Avenger(or other vacuum secondary) carb. Is there any reason to go with a mechanical secondary carb over a vacuum?
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