A little off topic, but........
Thread Starter
Drifting
Joined: Jul 2008
Posts: 1,873
Likes: 27
From: Sonora CA
A little off topic, but........
I see in the Summit catalogs all the time, spacers that go between the carb. and the manifold. They claim the spacers will give you better performance and gas milage. Anyone have any knowledge of the spacers? Do they really live up to the hype?
Thanks Steve
Thanks Steve
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
There are performance gains to be had from these spacers. They increase the plenum volume under the carb. I put one on my car with very noticeable results. Problem on a Corvette is fitting it under the hood.
Instructor
Joined: Jan 2011
Posts: 146
Likes: 2
From: Hillsborough NC
My throttle response sharpened up enough to notice when using a 1/2" phenolic spacer. However, the overall HP increase may be very small or non-existent. The real benefit I got from the phenolic spacer was preventing the heat flow to the carb (percolation problems went away). Make sure to match the spacer type to the intake. Also, a drop down air filter will give you the underhood space you need.
Melting Slicks
Joined: Aug 2008
Posts: 2,200
Likes: 3
From: Lehigh county Pennsylvania
I put a 1/2" four hole phenolic spacer between my square bore Holley and aluminum intake. No seat-of-the-pants power increase I could feel.
Are you sure it was a Summit catalog? Ridiculous power and gas mileage claims were more J C Whitney's style.
Are you sure it was a Summit catalog? Ridiculous power and gas mileage claims were more J C Whitney's style.
Last edited by 69 Chevy; Aug 7, 2011 at 08:21 AM.
