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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