Piston Grade - TDR Roundtable

Piston Grade

11-11-2009, 02:16 AM

#1 (permalink)

drag racer

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Join Date: Sep 1999 Location: AZ Posts: 418

Piston Grade

Anybody know what the differences are between "Grade A", "Grade B", and "Grade C" pistons (as listed in the Dodge parts catalog)? It does not appear to be bore size, as oversized pistons are also listed. Something to do with compression height perhaps???

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1999 Quad Cab 3500 dually, 4x2, AT, 4.10 LSD, Laramie SLT

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