Cam packages, valvetrain, headers and a tune to match. The chop you hear at idle is the result of parts chosen to work together, not parts chosen from a catalog page.
Tell us how you drive it, daily, weekend or strip, and we build to that. A truck that tows on Monday gets a different combination than a car that sees the eighth mile on Saturday.
Cam replacements and header installs are the two jobs that bring most HEMIs through the door. We also specialize in lifter replacement.