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Morel T4869 Ultra Pro Mechanical Roller Lifters are engineered for high-performance Big Block Chevrolet racing engines requiring precision, durability, and dependable valvetrain operation.

Featuring a .903" lifter body diameter and .810" roller wheel, these lifters are designed for professional racing applications using mechanical solid roller camshafts. The Ultra Pro design incorporates pushrod oiling, an on-center pushrod configuration, and a +.300" tall tie-bar arrangement.

Built for demanding racing applications, these lifters provide reliable mechanical operation when properly matched with the engine's camshaft, valve springs, and complete valvetrain assembly.

T4869 Specifications

• Application: Big Block Chevrolet (BBC)
• Lifter Type: Mechanical / Solid Roller
• Performance Series: Ultra Pro – Professional Racing
• Lifter Body Diameter: .903"
• Roller Diameter: .810"
• Lifter Height: +.300" Tall
• Pushrod Location: On-Center (O/C), No Offset
• Pushrod Oiling: Yes (P/O)
• Lifter Style: Vertical Tie-Bar
• Camshaft Compatibility: Mechanical / Solid Roller Camshafts
• Manufacturer: Morel Lifters
• Sold As: Complete Set – 16 Lifters / 8 Pairs

Fitment Note: Designed for Big Block Chevrolet racing engines with .903" lifter bores. These lifters are not a direct replacement for standard .842" lifter-bore applications. Verify lifter-bore diameter, pushrod alignment, valve lash, spring pressures, and valvetrain clearances before installation.