427 / 428 "FE" Dome

Specially designed for the latest aftermarket blocks and heads, these pistons are for use with the 427 or the 428 crank and aftermarket 4.250" crank with aftermarket 6.700" rod. The factory block should be sonic checked for 4.280" and 4.310" bores. These pistons use 1/16, 1/16, 3/16 rings. The compression ratios are figured for 10.150 block height. Larger bore sizes available as customs, call JE for details.

Includes:

  • Pin #975-2930-16-51S (154g)
  • Pin #990-2930-15-51S (150g)
  • Double spiro locks (#990-042-CS)

Note: 162116 & 162117 Designed to work with OEM and aftermarket connecting rods. 242930, 242931, & 242932 designed for aftermarket connecting rod only.

Part # Brand Bore Stroke Rod Deck Head CC Comp. Ratio Comp. Height Crown Vol. Ring Set Head Type Stock Action
168742 JE Pistons 4.250 3.780 6.490 10.150 72.0 12.5 1.770 0.00 J10008-4250-5 Dome Back Order
168742 JE Pistons 4.250 3.780 6.490 10.150 74.0 12.2 1.770 0.00 J10008-4250-5 Dome Back Order
168742 JE Pistons 4.250 3.780 6.490 10.150 88.0 10.5 1.770 0.00 J10008-4250-5 Dome Back Order