CMJ Performance Offers Boosted Shortblock packages For the 5.7 and 6.1 Hemi's We offer 398 CI, 419 CI, and 440 CI all engines feature CMJ Designed Ross Pistons. Our Packages Start at $5,999 and there is a $1000 core charge. Our engines do include a camshaft specific to your combo. Heads are also available. Please call Me for your specific build. Each engine is hand assembled in a clean room and wrapped in plastic before shipping.
