JE Pistons 242931 JE Pistons; 'FE' Inverted Dome; .990 wrist pin; Set of 8 Pistons; Recommended RingSet: J100F8-4280-5
JE Pistons - Domestic: For over 60 years, JE Pistons has been the industry leader in forged racing pistons for Chevy, Ford, Mopar and Buick engines.
Features:
- Application Specific Forgings for an Optimized, Uniform Crown Thickness
- Contact Reduction Groove to Minimize Frictional Drag
- Accumulator Groove for Increased Top Ring Stability and Sealing
- CNC-Machined Side Relief with Lower Support Band for Additional Skirt Strength
- Honed Pin Bores, Double Pressure Fed Pin Oilers and Wire Locks Included
Specifications:
- Comp Ratio @ 88cc: 9.1:1
- Stroke: 4.25
- Comp Ratio @ 72cc: 10.3:1
- Rod: 6.7
- Oversize: 0.047
- Gram Weight: 521
- Block Height: 10.15
- Bore: 4.28
- CID: 489
- Comp Ratio @ 74cc: 10.2:1
- Dome Volume: -25
- Comp Height: 1.325
Fitments:
- Ford Fe-Series 428 Cobra Jet/428 Super Cobra Jet/428CI (1966-1970)
- Ford Fe-Series 427 Cammer/427CI (1963-1968)