CP Bullet Pistons for Chrysler A and LA engines are made on premium 2618-t6 forgings and are balanced to a tolerance of +/- 1 gram. They feature forced pin oilers, contact reduction grooves, accumulator grooves as well as forged side reliefs. 5100 steel wrist pins, with wire locks are standard. Each set includes a 1.5 1.5 3.0 ring set, which consists of a steel gas nitrided barrel face top ring, a taper hook groove Napier second ring. and a 3 piece soft nitrided oil ring that is designed for severe duty applications. EQ Magnum piston sets include a low friction coefficient 1.2 1.2 3.0 ring package.
Flat top pistons in a Small Block Chrysler engine will generally provide compression ratios in the 9.0 to 12.0:1 range which makes them a good option for engines with aluminum heads and larger than stock camshafts. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads and will normally fit camshafts to well over .600 valve lift.
Dish top pistons in a Small Block Chrysler engine will generally provide compression ratios in the 9.0 to 9.5:1 range which makes them a good option for boosted engines with aluminum heads and larger than stock camshafts. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads and will normally fit camshafts to well over .600 valve lift.
