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You are here: Home > Pistons > Autotec Forged Pistons > Chevrolet > Chevrolet - LS Series > Flat Top

Autotec flat top pistons are manufactured on forged side relief, 4032 low expansion, high silicon material excellent for street or strip applications for either the 12° and 15° heads. They feature:
  • CNC precision machined ring grooves for 1.5 1.5 3.0mm rings.
  • Top ring land gas distribution grooves serve to enhance performance and improve ring seal.
  • .927 diameter, 2.250 long, 5.1 series steel wrist pins pin fit, wire locks, broached pin oilers, and gas accumulator grooves are included at no extra charge.
  • Diamond turned skirts.
  • Forging specifically designed to clear the reluctor wheel in all stroker applications.
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Autotec Forged Pistons
Autotec_Chevrolet LS_Flat_1.040 C/H_3.905 Bore_-3.3cc_.927 Pin_15° Head

P/N: ATK-1000602_Base
  • V/R for 15° Heads
  • 1.040 Compression Height
  • 4.000 Stroke
  • 6.200 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 3.905
Price includes pistons, pins, locks and oil rail spacers (as required).
more info
Autotec Forged Pistons
Autotec_Chevrolet LS_Flat_1.053 C/H_3.905 through 4.125 Bore_-3.3cc_.927 Pin_15° Head

P/N: ATK-1000729_Base
  • V/R for 15° Heads
  • 1.053 Compression Height
  • 4.125 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 3.905, 4.005, 4.030, 4.065, 4.070, 4.125
Price includes pistons, pins, locks and oil rail spacers (as required).
more info
Autotec Forged Pistons
Autotec_Chevrolet LS_Flat_1.115 C/H_3.905 through 4.125 Bore_-3.3cc_.927 Pin_15° Head

P/N: ATK-1000727_Base
  • V/R for 15° Heads
  • 1.115 Compression Height
  • 4.000 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 3.905, 4.005, 4.030, 4.065, 4.070, 4.125
Price includes pistons, pins, locks and oil rail spacers (as required).
more info
Autotec Forged Pistons
Autotec_Chevrolet LS_Flat_1.315 C/H_3.898 through 4.070 Bore_-3.3cc_.927 Pin_15° Head

P/N: ATK-1000593_Base
  • V/R for 15° Heads
  • 1.315 Compression Height
  • 3.622 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 3.898, 3.905, 3.908, 4.005, 4.010, 4.020, 4.030, 4.040, 4.060, 4.065, 4.070
Price includes pistons, pins, locks and oil rail spacers (as required).
more info
Autotec Forged Pistons
Autotec_Chevrolet LS_Flat_1.340 C/H_3.898 through 4.030 Bore_-3.3cc_.945 Pin_15° Head

P/N: ATK-1000587_Base
  • V/R for 15° Heads
  • 1.340 Compression Height
  • 3.622 Stroke
  • 6.098 Rod Length
  • .945 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 3.898, 3.908, 4.000, 4.005, 4.010, 4.030
Price includes pistons, pins, locks and oil rail spacers (as required).
more info
Autotec Forged Pistons
Autotec_Chevrolet LS7_Flat_1.053 C/H_4.125 and 4.130 Bore_-4.1cc_.927 Pin_12° Head

P/N: ATK-1000748_Base
  • V/R for 12° Heads
  • 1.053 Compression Height
  • 4.125 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.125, 4.130
Price includes pistons, pins, locks and oil rail spacers (as required).
more info
Autotec Forged Pistons
Autotec_Chevrolet LS7_Flat_1.115 C/H_4.125 and 4.130 Bore_-4.1cc_.927 Pin_12° Head

P/N: ATK-1000746_Base
  • V/R for 12° Heads
  • 1.115 Compression Height
  • 4.000 Stroke
  • 6.125 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.125, 4.130
Price includes pistons, pins, locks and oil rail spacers (as required).
more info
Autotec Forged Pistons
Autotec_Chevrolet LS7_Flat_1.163 C/H_4.125 and 4.130 Bore_-4.1cc_.927 Pin_12° Head

P/N: ATK-1000744_Base
  • V/R for 12° Heads
  • 1.163 Compression Height
  • 4.000 Stroke
  • 6.077 Rod Length
  • .927 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs
Available Bore Sizes: 4.125, 4.130
Price includes pistons, pins, locks and oil rail spacers (as required).
more info