1" carb spacer

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1" carb spacer

Post  BigRigTech on August 8th 2017, 3:07 pm

I have some room now for a 1" carb spacer. I have a stock motorsport "victor" intake with ported A429's. The local speed shop has a 1" open all star piece in stock. Is there much to be gained with a Jomar power cone over an open spacer?
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Re: 1" carb spacer

Post  Scott Foxwell on August 8th 2017, 3:38 pm

BigRigTech wrote:I have some room now for a 1" carb spacer. I have a stock motorsport "victor" intake with ported A429's. The local speed shop has a 1" open all star piece in stock. Is there much to be gained with a Jomar power cone over an open spacer?  
The only way you'll really know is to test and see. I've dyno'd all sorts of intake/spacer combinations and I've never found a consensus. Some that I expected to make a big difference didn't, and the opposite...I've seen 12hp from one on a motor that I didn't expect much. Just depends on the combination.

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Re: 1" carb spacer

Post  Lem Evans on August 8th 2017, 6:23 pm

BigRigTech wrote:I have some room now for a 1" carb spacer. I have a stock motorsport "victor" intake with ported A429's. The local speed shop has a 1" open all star piece in stock. Is there much to be gained with a Jomar power cone over an open spacer?  
Lots of trial and error here but on the BBF strokers I've messed with they liked the Jomar piece better than nothing, better that open and better a four hole. The trial is maybe the power cone thing wants a 1" open under it. Keep in mind that the gain may be only 8 or 9 hp but that's a good deal for only using a 1/2" wrench. Smile

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Re: 1" carb spacer

Post  BigRigTech on August 8th 2017, 6:34 pm

That's pretty much what I was thinking Lem, if the space is there I might as well put in a spacer to see what happens. I might even have room for 2. I'm crossing the stripe at 7000 or so if that makes any difference.
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