JE BBC Pistons are the top choice for drag race applications. Compression Height figured using 9.780 block height with zero deck clearance. Pistons will not work with Edelbrock #6045, 6040, 6055 heads. This JE Pistons set has vertical gas ports and backcut top rings and D-Wall second rings (.043, .043, 3mm) and a low tension oil ring.

Includes:

Pin #990-2930-18-51S (174g)

Double pin oilers

Double spiro locks (#990-042-CS)

Compression Ratio:

82cc 18.2:1

87cc 16.5:1

97cc 15.5:1