More Power ?
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Elder User
Joined: Nov 1999
Posts: 796
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From: Anderson Northern Ca
More Power ?
I just came across a set of old Galaxy exhaust manifolds for my 390 the numbers are COAE 9431 B and COAE 9430 B. Would it be worth my time to swap these in to my truck (390) as I am now running the stock logs? My 390 is set up at a stock compression ratio, a Comp 280H cam, Performer intake and a small 4 barrel Edelbrock carb. What gains if any would I expect from this swap, thanks for any opinions.
"bowties in the rearview mirror"
"bowties in the rearview mirror"
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Joined: Feb 2000
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From: Mesa
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