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Morel T4875 Ultra Pro Solid Roller Lifters are designed for high-performance Big Block Chevy racing engines requiring .903" lifter bores. Featuring precision-machined billet steel bodies, .810" roller wheels, and .180" left- and right-hand intake pushrod offsets, these lifters provide improved valvetrain geometry, durability, and performance for demanding racing applications.

The Ultra Pro Series features pressure-fed roller bearing lubrication and is engineered for high-RPM operation.

Specifications:

• Part Number: T4875 (Morel 4875)
• Type: Mechanical / Solid Roller
• Series: Ultra Pro – Professional Racing
• Application: Big Block Chevrolet (BBC)
• Body Diameter: .903"
• Roller Diameter: .810"
• Body Height: +.300" Tall
• Pushrod Location: .180" Left & Right Intake Offset
• Pushrod Oiling: Yes
• Roller Bearing: Needle Bearing
• Tie Bar: Vertical
• Set: 16 Lifters / 8 Pairs
• Series RPM Capability: 8,000+ RPM

Fitment Note: Requires compatible .903" lifter bores and a solid roller camshaft. Verify lifter-bore dimensions, intake pushrod offset orientation, pushrod length, tie-bar clearance, and valve spring pressures before ordering. Not a direct replacement for standard .842" lifter-bore applications.

Herbert Cams offers custom camshaft grinding and compatible lifter combinations.