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You are here: Home > Pistons > CP Pistons > Pontiac > Flat Top


Flat top pistons in a Pontiac engine will generally provide compression ratios in the 10.0 to 11.5:1 range which makes them a good option for engines with aluminum heads and larger than stock camshafts. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads and will normally fit camshafts to well over .600 valve lift.




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CP Bullet Forged Pistons
CP Forged Pistons_Pontiac 428/455_1.295 C/H_4.120 Base Bore_Flat _-9.04cc_OEM/Edelbrock Heads_Naturally Aspirated

PN: CPP-BP8002
  • 1.295 Compression Height
  • 4.250 Stroke
  • 6.800 Rod Length
  • .990 Pin
  • 1.5 1.5 3.0 Rings
  • Nitrous - Not recommended
  • Forced Induction - Not recommended
Available Bore Sizes: 4.155, 4.181
Price includes pistons, pins, rings, locks and oil rail spacers (as required)
more info
CP Bullet Forged Pistons
CP Forged Pistons_Pontiac 428/455_1.630 C/H_4.120 Base Bore_Flat _-7.14cc_OEM/Edelbrock Heads_Naturally Aspirated

PN: CPP-BP8001
  • 1.630 Compression Height
  • 3.750 Stroke
  • 6.700 Rod Length
  • .990 Pin
  • 1.5 1.5 3.0 Rings
  • Nitrous - Not recommended
  • Forced Induction - Not recommended
Available Bore Sizes: 4.155, 4.181
Price includes pistons, pins, rings, locks and oil rail spacers (as required)
more info