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You are here: Home > Pistons > Probe Forged Pistons > SRS - Sportsman Race Series > Chevrolet > Chevrolet - Big Block > Flat Top

Flat top pistons in a Chevrolet 454 engine will generally provide compression ratios in the 8.0 to 10.0:1 range which makes them a good option for boosted engines with larger than stock camshafts. Valve reliefs are configured to work with most types of head with standard valve locations and will normally fit camshafts to well over .700 valve lift.
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Probe Forged Pistons
Probe SRS Series - Chevrolet 454 - Flat - 1.270 C/H - 4.250 Base Bore - -3.0cc - .990 Pin - OEM Valve Locations

P/N: 8125-1-11371
  • V/R for OEM Heads
  • 1.270 Compression Height
  • 4.250 Stroke
  • 6.385 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.250, 4.280, 4.310, 4.320, 4.350, 4.375
Price includes pistons, pins, locks and oil rail spacers (as required).
Probe Forged Pistons
Probe SRS Series - Chevrolet 454 - Flat - 1.395 C/H - 4.250 Base Bore - -3.0cc - .990 Pin - OEM Valve Locations

P/N: 8125-1-13728
  • V/R for OEM Heads
  • 1.395 Compression Height
  • 4.000 Stroke
  • 6.385 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.250, 4.280, 4.310, 4.320, 4.350, 4.375
Price includes pistons, pins, locks and oil rail spacers (as required).
Probe Forged Pistons
Probe SRS Series - Chevrolet 454 - Flat - 1.645 C/H - 4.250 Base Bore - -3.0cc - .990 Pin - OEM Valve Locations

P/N: 8125-1-13727
  • V/R for OEM Heads
  • 1.645 Compression Height
  • 4.000 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 4.250, 4.280, 4.310, 4.320, 4.350, 4.375
Price includes pistons, pins, locks and oil rail spacers (as required).
Probe Forged Pistons
Probe SRS Series - Chevrolet 502 - Flat - 1.270 C/H - 4.470 Base Bore - -3.0cc - .990 Pin - OEM Valve Locations

P/N: 8126-1-14462
  • V/R for OEM Heads
  • 1.270 Compression Height
  • 4.250 Stroke
  • 6.385 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.470, 4.500, 4.530, 4.560, 4,600, 4.625
Price includes pistons, pins, locks and oil rail spacers (as required).
Probe Forged Pistons
Probe SRS Series - Chevrolet 502 - Flat - 1.395 C/H - 4.470 Base Bore - -3.0cc - .990 Pin - OEM Valve Locations

P/N: 8126-1-14463
  • V/R for OEM Heads
  • 1.395 Compression Height
  • 4.000 Stroke
  • 6.385 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.470, 4.500, 4.530, 4.560, 4,600, 4.625
Price includes pistons, pins, locks and oil rail spacers (as required).
Probe Forged Pistons
Probe SRS Series - Chevrolet 502 - Flat - 1.520 C/H - 4.470 Base Bore - -3.0cc - .990 Pin - OEM Valve Locations

P/N: 8126-1-14464
  • V/R for OEM Heads
  • 1.520 Compression Height
  • 4.250 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.470, 4.500, 4.530, 4.560, 4,600, 4.625
Price includes pistons, pins, locks and oil rail spacers (as required).
Probe Forged Pistons
Probe SRS Series - Chevrolet 502 - Flat - 1.645 C/H - 4.470 Base Bore - -3.0cc - .990 Pin - OEM Valve Locations

P/N: 8126-1-14465
  • V/R for OEM Heads
  • 1.645 Compression Height
  • 4.000 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.470, 4.500, 4.530, 4.560, 4,600, 4.625
Price includes pistons, pins, locks and oil rail spacers (as required).