|OPEN CHAMBER DOME GP (GAS PORTED)
These big block 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. These pistons have vertical gas ports and backcut top rings and D-Wall second rings (.043, .043, 3mm) and a low tension oil ring.
Pin #990-2930-15-51S (150g)
Double spiro locks (#990-042-CS)
Double pin oilers