can you identify the type or make of this piston?

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fullahotair

Member
Joined
Feb 26, 2002
Messages
940
How do you tell the make and the type of piston this is? forged? cast? hyper?Is "STD" on the top, so I gather that means it isn't bored? i didn't have mic's on hand to check...Its the usual dish piston with two notches on one side...

Thanks
Nate
 

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TRW piston. "H" means hyperutectic.

The H521AP is listed for a Buick V6 turbo.

The H644P is listed for a 7.8 (59cc chamber) compression 350.
 
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