JE Pistons Small Block Ford (20 Degree Head) 4.030 Bore / 1.600 CD / -5.00 CC - Set of 8 - 279670

JE Pistons SRP Pro 2618 line expands on the premium features of the SRP Pro series with the addition of extremely strong, 2618 forged aluminum material. All piston kits include gas-nitrided, carbon-steel pistons rings, pins, and locks. SRP Pro 2618 pistons maximize piston strength and maximize value, whether you?re building rowdy small block or a flame-spitting big block. As with all JE Pistons products, SRP pistons are made 100% in the USA.

Features & Benefits

• Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
• Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
• Ring groove design placement proven to maintain positive seal in high-HP, boosted applications, along with stout top land thickness for improved strength
• Low-friction skirt coating reduces wear and reduces operating noise while optimizing performance
• Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
• Accumulator groove helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
• Made 100% in the USA

Specifications: Piston Set, 2618, Flat Top, 4.030 Bore, 1.600 CD, 0.912 Pin, Set of 8.

These pistons utilize our dedicated Forged Side Relief (FSR) forging that was specifically designed to increase strength.

Detailed Specifications

• Piston Volume: -5.00 cc
• Intake Depth: .235 in.
• Top Compression Ring Thickness: 0.0480 in.
• Top Groove Width: 0.04800 in.
• 2nd Groove Width: 0.06 in.
• Second Compression Ring Thickness: 0.0600 in.
• Oil Ring Thickness: 0.119 in.
• Oil Groove Width: 0.11900 in.
• Wrist Pin Wall Thickness: 0.140 in.
• Exhaust Diameter: 2.000
• Wrist Pin Length: 2.250 in.
• Intake Diameter: 2.400 in.
• Exhaust Angle: 20
• Intake Angle: 20
• Engine Stroke: 3.000 in.
• Piston Average Weight: 470 g
• Connecting Rod Length: 5.090 in.
• Wrist Pin Material: 5115 Low Carbon Steel, Case Hardened
• Forging Type: FSR
• Ring Set - Recommended: JG31F1-4030-2
• Cylinder Head: SMALL BLOCK FORD 20 DEG
• Accumulator Groove: Yes
• Pin Fit: Yes
• Ring Set Included: Yes
• Skirt Coat: Yes