Re: thin ring grooves
1967-1968 we cut ring new grooves in stock pistons higher up on our 283/220.....John Hoffman did the pistons...
Was worth a couple tenths
1970 Stocker pistons had narrower rings cut higher up
Forged trues I think they were....
Makes no sense to me to require stock grooves 50 years later and have to use various spacers and still use thin rings
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Rich Biebel
S/C 1479
Stock 147R
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