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JE Racing Pistons 2618 Forged Pistons
These big block pistons are an excellent choice for drag race applications. Compression Height figured using 9.780 block height with zero deck clearance. These dome pistons will not work with Edelbrock head #6045, 6040, 6055. Pistons for these heads are available as special order. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings.
- 2618 Low Silicon Material
- Diamond Turned Skirts
- Smooth Radius Dome Designs
- Radius Valve Reliefs
- Specifically Designed Right and Left Forgings Allow Precise Valve Relief
Locations Further Reducing Weight While Maintaining Superior Strength and Uniform Crown Grooves
- Enlarged Pin Boss and Ring Belt Radii for Optimum Strength in Stress Areas
- Percision CNC Machined 1/16", 1/16", 3/16" Ring Grooves
- Annular Pin Oiler Grooves Which Intersect the Forced Pin Oilers
- Includes Wrist Pin, Double Spiro Locks and Oil Rail Supports (when needed)
Part Type: Pistons
Model: 2618 Forged Race Pistons
Application: Chevrolet Big Block V8
Piston Style: Dome Top Open Chamber Dome
Cylinder Bore: 4.320"
Compression Distance: 1.270"
Crankshaft Stroke/Rod Length: 4.250" with 6.385" Connecting Rod (498ci)
Deck Height (Zero Deck): 9.780"
Dome Volume: 43cc
Compression Ratio: 4.250" Stroke w/110cc Heads: 14.4
Compression Ratio: 4.250" Stroke w/118cc Heads: 13.1
Compression Ratio: 4.250" Stroke w/124cc Heads: 12.3
Piston Material: Forged 2618 Low Silicon
Accumulator Groves: Yes
Forced Pin Oilers: Yes
Gas Ports: No
Skirt Coating: No
Lock Removal Indents: Yes
Average Piston Weight: 559-573g
Wrist Pin Style: Press-Fit or Floating
Wrist Pins Included: Yes
Wrist Pin Size: .990" x 2.930"
Average Wrist Pin Weight: 150g
Pin Lock Included: Double Spiro Locks
Ring Grove Sizes: 1/16", 1/16", 3/16"
Piston Rings Included: No
Manufacturer: JE Race Pistons
Manufacturer's Part Number: 258244
Weight: 12.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Sets of 8
Note: Oil Rail Support is Included.
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