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You are here: Home > Pistons > Autotec Forged Pistons > Chevrolet > Chevrolet - Big Block > Dome Top > Closed Chamber Dome

Autotec dome top pistons are manufactured on forged side relief, 4032 low expansion, high silicon material excellent for street or strip applications, fitting most 23° heads. They feature:
  • CNC precision machined ring grooves for 1.5 1.5 3.0mm low friction rings.
  • Top ring land gas distribution grooves serve to enhance performance and improve ring seal.
  • .990 diameter, 2.800 long, 51 series steel wrist pins with pin fit, wire locks, broached pin oilers, and gas accumulator grooves included at no extra charge.
  • Diamond turned skirts.


Closed Chamber Dome


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Autotec Forged Pistons
Autotec Forged Pistons_Chevrolet 402_Closed Chamber Dome_1.765 C/H_3.760 Stroke_6.135 Rod_4.155 Bore_24.0cc_.990 Pin_Standard Head
Price $821.00

P/N: ATK-1000763
  • V/R for 23° Heads
  • 4.155 Bore
  • 1.765 Compression Height
  • 3.760 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs

Price includes pistons, pins, locks and oil rail spacers (as required). more info
Autotec Forged Pistons
Autotec Forged Pistons_Chevrolet 427_Closed Chamber Dome_1.765 C/H_3.760 Stroke_6.135 Rod_4.250 Bore_20.0cc_.990 Pin_Standard Head
Price $821.00

P/N: ATK-1000764
  • V/R for 23° Heads
  • 4.250 Bore
  • 1.765 Compression Height
  • 3.760 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs

Price includes pistons, pins, locks and oil rail spacers (as required). more info
Autotec Forged Pistons
Autotec Forged Pistons_Chevrolet 427_Closed Chamber Dome_1.765 C/H_3.760 Stroke_6.135 Rod_4.280 Bore_19.0cc_.990 Pin_Standard Head
Price $821.00

P/N: ATK-1000765
  • V/R for 23° Heads
  • 4.280 Bore
  • 1.765 Compression Height
  • 3.760 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs

Price includes pistons, pins, locks and oil rail spacers (as required). more info
Autotec Forged Pistons
Autotec Forged Pistons_Chevrolet 502_Small Dome_1.645 C/H_4.000 Stroke_6.135 Rod_4.470 Bore_1.0cc_.990 Pin_Closed Chamber Head
Price $821.00

P/N: ATK-1000766
  • V/R for 23° Heads
  • 4.470 Bore
  • 1.645 Compression Height
  • 4.000 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs

Price includes pistons, pins, locks and oil rail spacers (as required). more info
Autotec Forged Pistons
Autotec Forged Pistons_Chevrolet 502_Small Dome_1.645 C/H_4.000 Stroke_6.135 Rod_4.500 Bore_1.0cc_.990 Pin_Closed Chamber Head
Price $821.00

P/N: ATK-1000767
  • V/R for 23° Heads
  • 4.500 Bore
  • 1.645 Compression Height
  • 4.000 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs

Price includes pistons, pins, locks and oil rail spacers (as required). more info
Autotec Forged Pistons
Autotec Forged Pistons_Chevrolet 502_Small Dome_1.645 C/H_4.000 Stroke_6.135 Rod_4.530 Bore_1.0cc_.990 Pin_Closed Chamber Head
Price $821.00

P/N: ATK-1000768
  • V/R for 23° Heads
  • 4.530 Bore
  • 1.645 Compression Height
  • 4.000 Stroke
  • 6.135 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 150 H/P
  • Forced Induction - 10 lbs

Price includes pistons, pins, locks and oil rail spacers (as required). more info