Piston Casting #

Anyone know what piston cast #1557148 crosses over to part number wise? The number is in a 289 V8. I am trying to determine if it is an R1 piston.

Reply to
Michael - Roseland FL
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Reply to
John Poulos

It is a flat top. Since I posted the question, I found the R1 pistons that came out of my R1 Avanti engine and they share the same casting #.

John Poulos wrote:

Reply to
Michael - Roseland FL

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