Main Bearing Set for GM & Buick 401 & 425 | Standard Size

Enginetech BC140J | Main Bearings for GM/Buick 59-66 6.6L and 63-66 7.0L | .010" OversizedPremium-Quality Alloys: Enginetech rod and main bearing sets are crafted from premium alloys tailored to meet...

Main Bearing Set for GM & Buick 401 & 425 | .030" (.75mm) Oversized

Main Bearing Set for GM & Buick 3.3L 204 & 3.8L 231 | Standard Size

Enginetech BC300J | Main Bearings for GM/Buick 66-67 5.6L/340 and 68-80 5.7L/350 | StandardPremium-Quality Alloys: Enginetech rod and main bearing sets are crafted from premium alloys tailored to...

Main Bearing Set for GM & Buick 3.8L 231 7/16" Main Bolts | Standard Size