Akerly & Childs 4.155" Xtreme Piston Ring Compressor R0400033XL Both systems work equally well

Both systems work equally well and the parachute does not know the difference

1/2 in NPT

Choose from two widths

Aluminum timing cover fits most SB Mopar “LA” series blocks with driver’s side timing marks including 273

Akerly & Childs 4.155" Xtreme Piston Ring Compressor R0400033XL Both systems work equally wellPiston installation is as important a procedure as any other during engine assembly. That is why Akerly & Childs Xtreme ring compressors are manufactured with the engine builder in mind. All compressors are machined with a step at the bottom to clear block o rings when used. Xtreme compressors are manufactured from aircraft quality 6061T6 heat treated aluminum and then hard anodized for long life. Akerly & Childs over 50 years experience in racing