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Old 08-29-2010, 07:09 PM
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Chevy Heads

I Got A Set Of Heads 354484 Which I Havent Found A Lot Of Info On,i Checked The #'s Again Found Info On 354434. Supposed To Be 307 Heads On My Mild 350. My Question Is One Head Has Square Exhaust Port And The Other Is Rectangular. What Up With Dat? Why Put 307 Heads On A 350 Anthow? Thanks Gary

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Old 08-29-2010, 07:53 PM
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354434.....75-79...262/267/305...60cc chambers
Some bolt them on 350`s to raise the compression ratio due to the small chambers or to build low end torque from the small runners and valves. If it`s performance your looking for I`d get rid of them.
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