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Old 10-24-2012, 08:56 AM
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my87Z my87Z is offline
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Personally I would run the 1" spacer, you already picked the smaller runner Performer intake instead of the performer rpm intake (I would have gone with the rpm), but it wont make that much of difference. Like someone mentioned before it will act as if you had slightly larger runners, you still have the divider plenum so the their wont be any swirling and and turbulance will still be fine.

I actually ran a 383, ment for strip/strip with a performer rpm with a 1" spacer, I had the plenum divider milled down 1/2" (got the idea from a dyno show). I had that 383 dyno'd with both a victor jr and this modified rpm intake, the vic jr made alittle more high end hp but the modified rpm made considerably more tq.
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