|427/428 "FE" FLAT TOP
Specially designed for the latest aftermarket blocks and heads, these pistons are for use with the aftermarket 4.250" crank and aftermarket 6.700" rods. 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.
Double spiro locks (#990-042-CS)