Enginetech BC506JSTD Crankshaft Main Bearing Set GM 8.1L 496 V8 Standard Size

The Enginetech BC506JSTD is a standard-size crankshaft main bearing set engineered for the GM/Chevrolet 8.1L (496 cubic inch) OHV V8 Vortec engine. Designed as a direct OE-replacement component for engine rebuilds, this set delivers precise fitment and reliable performance.

Key Features:

• Standard size (STD) crankshaft main bearing set for GM 8.1L / 496 V8 applications
• Made from high-quality alloys selected for the specific application requirement, offering high load capacity with excellent anti-friction properties including wear resistance, anti-seizure protection, and embeddability
• Precision parting line chamfers cut at the correct angle to allow proper oil bleed-through without reducing oil pressure
• Manufactured on state-of-the-art equipment to ensure consistent bearing thickness for proper oil clearances
• Thrust washers included where appropriate
• Available in multiple sizes: Standard (STD), 0.010" (0.25mm) oversize, and 0.020" (0.50mm) oversize

Specifications:

• Shaft Diameter: 2.7482"–2.7489"
• Housing Bore: 2.9370"–2.9380"
• Wall Thickness: 0.0932"–0.0940"
• Width: 1.047"–1.811"
• Oil Clearance: 0.0005"–0.0033"

Competitive Interchanges: Federal-Mogul 7388MA, Mahle Clevite MS-2235AL

Enginetech has been the engine rebuilder's choice for over 25 years, supplying a complete line of internal engine parts for domestic, import, and high-performance applications.