3.908" +.010" LS1 Flat Top Pistons Forged 4032, -3.3cc, CH 1.340" suits Standard Stroke & Standard Rod 6.098"

Racetec / Autotec AT-1000588 LS1 Forged Pistons

3.908" + 010" Oversize Flat Top - LS1 Forged Pistons

Suits Chevy LS1 348 with standard crank & standard conrod

Racetec / Autotec Forged Pistons

• Manufactured on forged side relief, 4032 low expansion, high silicon material excellent for street or strip applications. 
• Low Expansion is perfect for daily driving and longivity for tough street motors and no piston noise.
• Diamond turned skirts for precision accuracy & finish. 

Autotec #At-1000588 LS1 Pistons Specs:

• Forged Pistons Suits: LS1 / 5.7L (Holden Commodore, VT, VY, VX, VZ)
• Combination Suits: Standard Stroke Crankshaft & Standard Conrod
• Wrist Pin Size: 0.945"  (Standard Gudgeon Pin Size)
• Piston Bore Size: 3.908"
• Piston Bore Oversize: + 0.010"
• Piston Compression Height: 1.340"    (standard pin height)
• Rod Length: 6.098”   (standard rod length)
• Piston Top:  Flat Top -3.3cc
• Crankshaft Stroke: 3.622”
• Rings Size: 1.5mm, 1.5mm, 3.0mm rings
• Piston Weight Each: 420g
• Compression Ratios: 
  • 60cc Chamber = 10.7:1
  • 64cc Chamber = 10.2:1
  • 71cc Chamber =   9.5:1
• Piston Rings included: NO  - See part: DRP-PRG3905P-8  Stainless Steel Top/Napier 2nd ring
• PISTONS MADE IN USA