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You are here: Home > Pistons > Probe Forged Pistons > PRS - Professional Race Series > Chevrolet > Chevrolet - Big Block > Dish Top


Dish top pistons in a Chevrolet 454 engine will generally provide compression ratios in the 8.0 to 9.0:1 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 PRS Series Forged Pistons_Chevrolet 496_Dish_1.270 C/H_4.250 Base Bore_-13.4cc_.990 Pin_OEM Valve Locations_Gas Ported

P/N: 8025-2-14783
  • V/R for OEM Head
  • 1.270 Compression Height
  • 4.250 Stroke
  • 6.385 Rod Length
  • .990 Wrist Pin Diameter
  • 52100 Bearing Steel Wrist Pins
  • .043 .043 3.0 Ring Grooves
  • Top or Lateral Gas Ports
  • 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)
more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet 502_Dish_1.645 C/H_4.470 Base Bore_-25.1cc_.990 Pin_OEM Valve Locations_Gas Ported

P/N: 8026-2-14807
  • V/R for OEM Head
  • 1.645 Compression Height
  • 4.000 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 52100 Bearing Steel Wrist Pins
  • .043 .043 3.0 Ring Grooves
  • Top or Lateral Gas Ports
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 4.500, 4.530, 4.560, 4.600, 4.625
Price includes pistons, pins, locks and oil rail spacers (as required)
more info