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Flat Top Dome Top

Flat Top
FPS Forged Pistons for Chevrolet 454

  • VMS75 high silicon forged aluminum

  • Increased valve clearance

  • Lightweight

  • Tight running clearance (.002 to .006)

  • Weight matched (+/- 2.5 grams)

  • Finished diameters +/- .00005

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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 106cc 112cc 118cc 124cc Part # Ring Set  

454 - 4.000 Stroke - 6.135 Rod- 1.640 C/H - .990 x 2.919 - Pressed Fit Pin
4.250 623 8.70 8.34 8.01 7.70 P2277F-Std 40203CP Ring Grooves 5/64 5/64 3/16
4.280 625 8.80 8.43 8.10 7.79 P2277F-030 40203CP-030 Valve Relief Volume 3.0cc
4.290 632 8.84 8.47 8.13 7.82 P2377F-040 40203CP-040  
4.310 638 8.90 8.53 8.19 7.88 P2377F-060 40203CP-060  
4.320 640 8.94 8.56 8.22 7.91 P2377F-070 50722  
Back To:
 PROBE FORGED PISTONS

Dome Top
FPS Forged Pistons for Chevrolet 454

  • VMS75 high silicon forged aluminum

  • Increased valve clearance

  • Lightweight

  • Tight running clearance (.002 to .006)

  • Weight matched (+/- 2.5 grams)

  • Finished diameters +/- .00005

Back To:
 PROBE FORGED PISTONS
    Compression Ratio      
Bore Weight 106cc 112cc 118cc 124cc Part # Ring Set  

454 - 4.000 Stroke - 6.135 Rod- 1.640 C/H - .990 x 2.919 - Pressed Fit Pin
4.250 623 10.33 9.80 9.33 8.90 P2465F-Std 40203CP Ring Grooves 5/64 5/64 3/16
4.280 638 10.44 9.91 9.43 9.00 P2465F-030 40203CP-030 Valve Relief Volume 18.0cc
4.290 643 10.48 9.95 9.47 9.04 P2465F-040 40203CP-040  
4.310 653 10.56 10.02 9.54 9.10 P2465F-060 40203CP-060  
4.320 655 10.60 10.06 9.57 9.14 P2465F-070 50722