BBM Roller Cam - 3-Bolt CRBRX296-R8

The COMP Cams BBM Roller Cam 3-Bolt CRBRX296-R8 is a mechanical roller camshaft engineered for high-performance drag racing and competition engines built on the Mopar B and RB-Series platform. This is a purpose-built component for operators building engines that demand aggressive valve timing, rapid cylinder filling, and maximum power output in the 4000–6500 RPM operating window.

The 296/303 duration split (intake/exhaust) and 108 LSA (lobe separation angle) define a cam profile optimized for low-end torque and mid-range acceleration. Valve lift is specified at 0.650 inches intake and 0.651 inches exhaust, requiring corresponding valve train geometry and clearances during installation. The roller design eliminates sliding friction present in flat-tappet cams, reducing heat generation and wear while permitting more aggressive lobe profiles without risking valve train damage. This mechanical roller cam is a single unit, sold individually—verify your engine's demand before ordering.

This camshaft suits builders of street/strip or full-competition B and RB big-block Mopar engines where consistent, repeatable power delivery and reliability under sustained high-RPM operation matter. The specific RPM band and duration make this profile most effective in carbureted or fuel-injected applications where the engine breathing characteristics support aggressive intake and exhaust events. Proper installation requires coordinated work with compatible valve springs, pushrods, rocker arms, and ancillary components—marginal valve train geometry will result in valve float or control loss at peak boost conditions.

COMP Cams is recognized throughout the performance engine building community for manufacturing precision-ground camshafts to tight tolerances and consistent specifications lot-to-lot. The 3-bolt mounting configuration confirms compatibility with original and modern Mopar B/RB blocks designed for this standard. Always confirm your engine's specific valley pan, oil passage layout, and bearing cap design before purchase to ensure full fitment.