BAM Roller Lifters .904" – Big Block Mopar (BBM) Top Alcohol, O/C, No Pushrod Oiling

Key Features:

• .904" Diameter – Precision Fit for High-Horsepower BBM Engines
• Designed specifically for Big Block Mopar (BBM) Top Alcohol drag racing applications.
• Provides superior lifter stability, reduced deflection, and consistent camshaft engagement at extreme RPM.
• Ideal for engines using standard Mopar .904" lifter bores.
• Configuration - O/C
• On Center, body design for optimal pushrod alignment with high-port cylinder heads.
• Reduces pushrod side loading, improving valvetrain durability and overall engine performance.
• Helps maintain accurate valve motion under aggressive camshaft profiles and high spring pressures.
• No Pushrod Oiling – Designed for External or Block-Based Oiling Systems
• Built for dedicated race engines that use external oiling systems or direct lifter bore lubrication.
• Eliminates internal oil passages for pushrod oiling, reducing weight and potential failure points.
• Ideal for dry sump or pressurized race-specific oiling setups commonly used in Top Alcohol drag racing.
• 0.300" Tall Lifter Body – Enhanced Bore Engagement & Stability
• Taller body increases contact area with the lifter bore for improved strength and reduced lifter walk.
• Ensures consistent lifter motion and camshaft contact under extreme load and RPM.
• CNC-Machined Billet Steel Construction – Built for Extreme Conditions
• Manufactured from premium heat-treated billet steel for exceptional wear resistance and strength.
• Machined to exact tolerances to deliver smooth operation, minimal drag, and long-term reliability.
• Withstands high spring pressures and prolonged high-RPM abuse typical of Top Alcohol engines.
• Race-Proven Design – Trusted by Professional Racers
• Purpose-built for Top Alcohol drag racing where every detail matters.
• Designed to deliver maximum durability and consistent performance in high-horsepower Mopar platforms.
• Proven in the field under the harshest racing conditions.

Applications:

• Fits Big Block Mopar (BBM) engines in Top Alcohol drag racing configurations.
• Designed for offset lifter layouts without pushrod oiling.
• Perfect for use with external or custom oiling systems, high-lift cams, and shaft rocker setups.
• Ideal for professional-level drag racing where strength, precision, and reliability are critical.

Built to dominate the strip — BAM .904" Roller Lifters for BBM Top Alcohol deliver unmatched strength, optimized geometry, and zero compromises.