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post #77 of (permalink) Old 05-12-2019, 09:05 AM Thread Starter
John_in_SC
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Join Date: Apr 2019
Location: Upstate
Posts: 100
Quote:
Originally Posted by dobrostang View Post
.....I run a 4150 650 Double pump which gives amazing throttle response but is a gas guzzler. Its made for racing - the Holley performance book suggests vacuum secondaries for any street car. They are great for set and forget for years.
Thanks for the feeback. Was planning on ringing them on Monday.

I got a hit on my CL add for the QF 750 CFM. I'll take a 60$ loss on it but I'd get enough out of it to put the QF 650 on it. They are available in mechanical or vacuum secondaries. Seems like the right thing to do.

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John in SC
Formerly Studiopet_2005
1966 Coupe - 302 with some stuff on it
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