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Thread: Compression for blower

  1. #1
    Junior Member JOURNEYMAN
    Join Date
    Apr 2004

    Compression for blower

    I have a 511 BBC 12:5:1 goods heads etc. wanting to run a supercharger on alcohol. Iam sure cam will need changed should block be oringed? MLS head gaskets enough? not going real crazy maybe about I guess whats the best way to go without spending a ton of cash or just get another motor??

  2. #2
    Senior Member MASTER BUILDER
    Join Date
    Mar 2014
    12.5 compression for a blower is getting pretty high. Will limit the tuning window. Normal use includes o ringed block and receiver grooved heads or vise versa and copper head gaskets. SCE has some copper gaskets that have seal rings inside the gasket. You could use thicker heads gaskets to lower you compression. Check with Cometic on their MLS gaskets.

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