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  • Users: Brett350
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  1. B

    915 vs 452 heads on 383

    Thought I'd get an opinion before I toss my engine back together. The 915s from 67 have the smaller exhaust valves and closed chambers. The 452s are open chamber but have a bigger exhaust valve. Curious if the 452s would be more beneficial with the bigger exhaust valve despite a drop in...
  3. B

    383 mild street build

    In the middle of a tear down on my 383 after breaking a skirt on cylinder 4. Found out piston selection is pretty scarce for the 383. Ended up ordering the kb400s which is a 6cc dome to try and bump compression. This is what I plan on running: 1967 383 bored 30 over Edelbrock Performer rpm...
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