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You are here: Home > Pistons > Probe Forged Pistons > PRS - Professional Race Series > Chevrolet > Chevrolet - LS Series > Flat Top
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LS 5.3L LS Series LS7 LT1


Flat top pistons in a Chevrolet LS Series engine will generally provide compression ratios in the 10.0 to 12.0:1 range which makes them a good option for high performance and racing engines with aluminum heads and larger than stock camshafts.

Please select your piston from the list below, or select from the categories listed above.

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Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.030 C/H_3.898 Base Bore_-2.7cc_.927 Pin_15° Head

P/N: 8031-1-15288
  • V/R for 15° OEM Head
  • 1.030 Compression Height
  • 4.000 Stroke
  • 6.200 Rod Length
  • .927 Wrist Pin Diameter
  • 52100 Bearing Steel Wrist Pins
  • 1.5 1.5 3.0 Ring Grooves
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 3.898, 3.905
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.030 C/H_4.065 Base Bore_-2.7cc_.927 Pin_15° Head_Gas Ported

P/N: 8033-1-14899
  • V/R for 15° OEM Head
  • 1.030 Compression Height
  • 4.125 Stroke
  • 6.125 Rod Length
  • .927 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: 4.065, 4.070, 4.075, 4.080
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.050 C/H_4.000 Base Bore_-2.7cc_.927 Pin_15° Head_Gas Ported

P/N: 8032-1-15043
  • V/R for 15° OEM Head
  • 1.050 Compression Height
  • 4.125 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • .043 .043 3.0 Ring Grooves
  • 52100 Bearing Steel Wrist Pins
  • Top or Lateral Gas Ports
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 4.005, 4.030, 4.040, 4.125
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.050 C/H_4.065 Base Bore_-2.7cc_.927 Pin_15° Head_Gas Ported

P/N: 8033-1-15044
  • V/R for 15° OEM Head
  • 1.050 Compression Height
  • 4.125 Stroke
  • 6.125 Rod Length
  • .927 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: 4.065, 4.070, 4.075, 4.080
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.110 C/H_3.898 Base Bore_-2.7cc_.927 Pin_15° Head

P/N: 8031-1-15021
  • V/R for 15° OEM Head
  • 1.110 Compression Height
  • 4.000 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • 52100 Bearing Steel Wrist Pins
  • 1.5 1.5 3.0 Ring Grooves
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 3.898, 3.902, 3.905
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.110 C/H_4.000 Base Bore_-2.7cc_.927 Pin_15° Head_Gas Ported

P/N: 8032-1-15022
  • V/R for 15° OEM Head
  • 1.110 Compression Height
  • 4.000 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • .043 .043 3.0 Ring Grooves
  • 52100 Bearing Steel Wrist Pins
  • Top or Lateral Gas Ports
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 4.005, 4.030, 4.040, 4.125
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.110 C/H_4.000 Base Bore_-2.7cc_.927 Pin_AFR LS3 12° Head_Gas Ported

P/N: 8032-1-25059
  • V/R for AFR LS3 12° Head
  • 1.110 Compression Height
  • 4.000 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • .043 .043 3.0 Ring Grooves
  • 52100 Bearing Steel Wrist Pins
  • Top or Lateral Gas Ports
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 4.005, 4.030, 4.040, 4.125
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.110 C/H_4.065 Base Bore_-2.7cc_.927 Pin_15° Head_Gas Ported

P/N: 8033-1-15032
  • V/R for 15° OEM Head
  • 1.110 Compression Height
  • 4.000 Stroke
  • 6.125 Rod Length
  • .927 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: 4.065, 4.070, 4.075, 4.080
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.110 C/H_4.065 Base Bore_-2.7cc_.927 Pin_AFR LS3 12° Head_Gas Ported

P/N: 8033-1-25032
  • V/R for AFR LS3 12° Head
  • 1.110 Compression Height
  • 4.000 Stroke
  • 6.125 Rod Length
  • .927 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: 4.065, 4.070, 4.075, 4.080
Price includes pistons, pins, locks and oil rail spacers (as required) more info
Probe Forged Pistons
Probe PRS Series Forged Pistons_Chevrolet LS_Flat_1.300 C/H_3.780 Base Bore_-3.5cc_.927 Pin_15° Head

P/N: 8030-1-15506
  • V/R for 15° OEM Head
  • 1.300 Compression Height
  • 3.622 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Ring Grooves
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bore Sizes: 3.780, 3.799
Price includes pistons, pins, locks and oil rail spacers (as required) more info