350 Small Block Chevy - Flat Top Forged Piston383 c.i., 4.030" bore, 3.750" stroke, 5.700" rod length, -5.0cc dome volumeBrand: SRPPart Number: SRP271055Description: Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength. Stronger than traditional designs but up to 20% lighter.
- Accumulator grooves for improved ring seal
- Thick top ring lands to accommodate moderate forced induction/nitrous applications
Rings Included
- Lightweight, low friction metric ring package included
- 1.2mm CARBON STEEL top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring
- Minimal filing required
Pins & Locks:
- High quality 2.250” pin further reduces reciprocating weight
- Carbon steel wire locks included
Specifications:
- Engine: SMALL BLOCK CHEVROLET
- Bore Diameter: 4.030
- Compression Height: 1.425
- Compression Ratio with 58cc chamber volume: 11.9
- Compression Ratio with 64cc chamber volume: 11.1
- Compression Ratio with 70cc chamber volume: 10.3
- Piston Volume: -5.0
- Cylinder Head: CHEVROLET 23 DEG 20/30
- Piston Pin Outside Diameter: 0.927
- Piston Pin Length: 2.250
- Piston Pin Material: 5115
- Ringset Included: No
- Top Compression Ring Thickness: 1.2mm
- Second Compression Ring Thickness: 1.5mm
- Oil Ring Thickness: 3.0mm
- Piston Material: 2618
- Forging Type: FSR
- Piston Avg Weight: 434
- Pin Wall Thickness: 0.150
- Piston Type: Flat
- Ring Set: JG31F8-4030-2
