Perfect Circle SH616S Camshaft Bearing Set Big Block Chevy

The Perfect Circle SH616S is a premium camshaft bearing set designed for Chevrolet and GMC big block V8 engines. Now manufactured under the Clevite MAHLE brand, this bearing set maintains the same high-quality specifications that engine builders have trusted for decades.

Engine Applications:

• Chevrolet Big Block V8: 396ci, 402ci, 427ci, 454ci, 496ci, 502ci
• Displacement: 6.5L, 7.0L, 7.4L, 8.1L, 8.2L
• Model Years: 1967-2007 (engine blocks manufactured from 1967)

Construction and Features:

• Seamless steel tube construction with thin layer of lead-based Babbitt material
• B1 steel-backed micro Babbitt bearing material (nominal .020" thickness)
• Seamless design eliminates breakage and bearing surface interruptions
• Easy installation with direct OEM fit specifications
• Complete set includes all bearings needed for camshaft installation

Precision Specifications:

• #1 Bearing Housing Bore: 2.1395" - 2.1405"
• #2 & #5 Bearing Housing Bore: 2.1295" - 2.1305"
• #3 & #4 Bearing Housing Bore: 2.1195" - 2.1205"

This bearing set is engineered for direct replacement applications and provides reliable performance for both stock rebuilds and performance engine builds. The precision-manufactured bearings ensure proper camshaft alignment, reduced friction, and extended service life.