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what head gaskets needed to install alum. heads on 350 chevy

This is a discussion on what head gaskets needed to install alum. heads on 350 chevy within the Internal Engine forums, part of the LSx Technical Help Section category; I have a 350 engine that I am going to install aluminum heads on, I have installed heads before but ...

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    pewter
    99 Trans Am

    what head gaskets needed to install alum. heads on 350 chevy

    I have a 350 engine that I am going to install aluminum heads on, I have installed heads before but never Alum.is there a special head gasket I need to use due to the difference in the iron block and alum.heads.what would be the torque on the head bolts or are they the same as the cast iron? do I need to use any thing on these gaskets or treat them as any other head gasket? What do you use on your head bolts when installing your heads?

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    Senior Member Redphoenix1998's Avatar
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    Red
    1998 Pontiac Trans Am

    If you're running aluminum heads to an iron block you will want to use MLS gaskets. Cometic makes excellent gaskets so I would invest in them. You need to calculate your compression ration as there are different thicknesses. There are a bunch of compression calculators out there that will give you what thickness you should shoot for. It's not exact but once you have the spec you can shop and find a thickness as close as possible. As far as head bolts if you go with ARP head bolts the instructions will give you the torque spec specific to ARP for iron and aluminum heads. Personally I would run head studs. When you use ARP bolts you have to use the lube they provide for installing as the friction properties is spec'ed to the torque value you want to achieve.
    mrr23 likes this.
    98 WS6 M6 ASC #2647
    Forged Custom 408 w/Vortec YSi

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