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carb spacer

  1. #1
    MPR FAB southwind011's Avatar
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    Default carb spacer

    i have a proformer rpm air gap with a 750 holly, would a carb spacer do anything for me? if so what ones would i be looking for

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  3. #2
    Spiral out MikeF's Avatar
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    I've never seen a 100hp carb spacer (other than a nitrous plate).
    Don't bother.........save the cash for fuel.

  4. #3
    Senior Member DuaneHTP's Avatar
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    have a proformer rpm air gap with a 750 holly, would a carb spacer do anything for me? if so what ones would i be looking for
    The last 502/502 Chevy we had on the dyno gained 18 HP by putting a Wilson Manifold 1" spacer between the 850 cfm holley and the rpm air gap manifold at 5600 rpm. That don't mean every motor will though. The spacer did help even out the AFR between cylinders quite a bit. I imagine that's where the HP came from.
    Duane HTP
    Last edited by DuaneHTP; 02-07-2010 at 09:25 AM. Reason: sp

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  6. #4
    Senior Member Luckie Stiff's Avatar
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    I had a wilson manifolds 2" open on my boat, I liked it, gave me a little more top end but nothing so drastic that I have to have one on my boat, I went to a 1" open and it seems like I picked up a little more bottom, and didn't lose any top end.
    "Don't you realize that there are already enough people in the world to hate without you putting in so much effort to give me another?"

  7. #5
    About 500' AGL MudPumper's Avatar
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    Quote Originally Posted by southwind011 View Post
    i have a proformer rpm air gap with a 750 holly, would a carb spacer do anything for me?
    It will make your carb sit higher on the motor. Contact RCB19 here on the boards....He was selling some really nice Phenolic carb spacers a while back.

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