Enginetech BC383J010 Main Bearing Set GM Pontiac 326 350 389 400 V8 0.010 Undersize

The Enginetech BC383J010 is a complete main bearing set designed for GM Pontiac V8 engines, including the 5.3L (326 CID), 5.7L (350 CID), 6.4L (389 CID), and 6.6L (400 CID) displacements. This set is precision-manufactured to 0.010" undersize specifications, making it the correct choice for engines that have had the crankshaft journals reground during a rebuild.

Enginetech is a trusted supplier of engine rebuild components, and their bearing sets are engineered to meet or exceed OEM tolerances for proper oil clearance, load distribution, and crankshaft support. These main bearings are an essential component of any quality engine overhaul, ensuring long-term durability and reliable oil film maintenance across the main journal surfaces.

Key Features:

• Designed for GM Pontiac V8 engines: 5.3L (326 CID), 5.7L (350 CID), 6.4L (389 CID), and 6.6L (400 CID)
• 0.010" undersize — for use with reground crankshafts
• Manufactured to OEM tolerances for precise oil clearance and load capacity
• Complete main bearing set included
• Enginetech quality construction for dependable engine rebuild performance
• Part Number: BC383J010

Whether you are performing a full engine rebuild or replacing worn main bearings, the Enginetech BC383J010 delivers the precision fit required for a professional-grade restoration of classic GM Pontiac V8 powerplants.