385 c.i., 4.040" bore, 3.750" stroke, 5.700" rod length, -31.0cc dome volume

SRP259611

P259611

JE Pistons SRP line is proud to offer huge performance for the price. Forged from strong, 4032 aluminium alloy material, SRP pistons blend strength with affordability, offering an excellent performance bargain for performance rebuild and street/strip applications. (some applications in 2618) Features: 4032 low expansion high silicon aluminum alloy heat treated to SRP specifications Ring land and crown thickness specifically engineered for mild turbo, supercharged and nitrous applications Forced Pin Oiler for increased wrist pin lubrication Pin fitting and double spiro locks included 927-2750-150 wall wrist pin (130 grams) included CNC Machined ring grooves accept 1/16, 1/16, 3/16 rings (Rings Sold Separately) Optional bearing steel pins available. Specifications: Engine: SMALL BLOCK CHEVROLET Bore Diameter: 4.040 Compression Height: 1.425 CompressionRatio with 58cc chamber volume: 9.0 Compression Ratio with 64cc chamber volume: 8.6 Compression Ratio with 70cc chamber volume: 8.1 Piston Volume: -31.0 Cylinder Head: CHEVROLET 23 DEG 20/30 Piston Pin Outside Diameter: 0.927 Piston Pin Length: 2.750 Piston Pin Material: 5115 Ringset Included: No Top Compression Ring Thickness: 1/16" Second Compression Ring Thickness: 1/16" Oil Ring Thickness: 3/16" Piston Material: 4032 Forging Type: FSR Piston Avg Weight: 481 Pin Wall Thickness: 0.150 Piston Type: Dish Ring Set: S100S8-4040-5