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03-10-2007 #1
Registered User
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- Sep 2005
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- Scottsdale AZ
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- 294
Is vacume secondary ok on a manual trans?
I have a 69 camaro with a 383. It has com cams 288 roller in it and about 10:1 compression.
I bought it as a crate motor and installed a carb I had laying around.
It is a Holley 750 vacume secondary.
Shouldn't I go with a double pumper on a manual trans?
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03-10-2007 #2
Starting The Transformation
- Join Date
- Nov 2006
- Location
- NH
- Posts
- 269
You can run your V/S carb but a more ideal set up would be a M/S
03-10-2007 #3
Registered User
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- Aug 2004
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- 830
i dont know about that... unless your using a blower, vacume secondary is the way to go on a mild street engine from what i understand
03-11-2007 #4
Registered User
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- Jul 2006
- Location
- Northwestern NJ
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- 342
Every LS6, LT1 and (I think)DZ 302 had one...
People love the doubler pumpers because they cover the "hole" in throttle transition on big cammed engines, but realistically, you'll make more power with a vac sec because it's never oversized.
Tommy
Tommy Souren
"The older I get, the faster I was."
Grandma's 20k mile '80 Malibu Classic, in-progress factory style LS6 454, Legend LGT 700 5 speed, 9" 3.70 posi, Global West suspension, 12"/11" discs.
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