Pat, here is what Sealed Power quotes about these pistons:

Forged Piston 0.142 Dish, 4.125 Bore, 4.250 Stroke, 6.735 Rod, 455 Oldsmobile
$53.99Part Number: L2323F
SKU: L2323F
Brand: Sealed Power
Price: $53.99
TRW Power Forged pistons have become the standard by which pistons

are compared. The complete piston manufacturing proceess, from the

raw materials to the finished product is directly handled by TRW.

From OE type replacement to all out racing motors, Power Forged

pistons provide the same dependable performance experienced by

winners of countless races every week! *Compression ratio is

figured with 70.0cc heads.




Forged Piston 0.142 Dish, 4.125 Bore, 4.250 Stroke, 6.735 Rod, 455 Oldsmobile (L2323F) Specifications
Forged Piston 0.142 Dish, 4.125 Bore, 4.250 Stroke, 6.735 Rod, 455 Oldsmobile (L2323F) Specifications
Bore Diameter (in.): 4.125
Compression Ratio: 10.0:1
Dish / Dome Volume (cc): -18
Pin Height (in.): 1.735
Ring Package: 5/64 5/64 3/16
Rod Length (in.): 6.735
Stroke (in.): 4.250
Weight (grams): 672
Wrist Pin Type: Pressed


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