Auto Tec Pistons 1000589 Forged LS 15° Flat Top 4.000 Bore, Chevy LS 364

Auto Tec pistons are manufactured on a forged side relief, 4032 low expansion, high silicon material excellent for street/strip applications. Auto Tec pistons piston offer standard features like broached pin oilers for increased wrist pin lubrication, accumulator grooves, pin fitting wrist pins, wire locks included and 927-2250-51-15C wall wrist pin included, or 945-2250-51-15C as indicated. Auto Tec pistons have CNC Machined ring grooves that accept 1.5, 1.5, 3mm rings (Rings Sold Separately). Forging designed to clear reluctor wheel in all stroker applications.

Compression Ratio:

60cc 11.2:1

64cc 10.7:1

71cc 9.9:1
Note: Deck of part will extend above deck of block.