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SRS Forged Pistons for Oldsmobile 455

  • 2618-t6 forged aluminum

  • Lightweight

  • Tight running clearance (.002 to .006)

  • Weight matched (+/- 2.5 grams)

  • Finished diameters +/- .00005

  • Fits standard heads


Our Tool Steel Wrist Pin Upgrade Is Now
 Available At A Substantially Reduced Cost!

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 PROBE FORGED PISTONS
Compression Ratio computed with .010 deck and .038 head gasket at bore +.125" (weights and compression ratios are approximate)
    Compression Ratio      
Bore Weight 77cc 87cc Part # Ring Set  

455 - 4.250 Stroke - 6.735 Rod - 1.625 C/H - .980 x 2.750 - 142 Gram Pin
4.155 TBA 11.36 10.33 14476-030 315-0032 Ring Grooves 1/16 1/16 3/16
4.185 TBA 11.49 10.45 14476-060   Valve Relief Volume 3.0cc
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 PROBE FORGED PISTONS