1974 to 1991 290-401 AMC V8
- This rocker system features Cage guided needle bearings, 3/4 diameter rocker shafts, 7/16 internal oil adjusters and all the necessary hardware for a complete install. If you changed camshafts or machined the block and heads you may have to change your pushrod length, always check before installing
- Designed to replace the factory style rocker system, without machine work
- This rocker system is capable of handling 350lbs. of open pressure before the 5/16 bolt will fail, If you are running an application beyond this, It is recommended you install 7/16 rocker studs and guide plates. And use our S4004-7 AMC rocker setup.