Sealed Power Competition Series Main Bearing Set - SB Chevy 400 - 3/4 Groove - .001" Thinner Size 20-OTL-NR-M MSD has answered this demand

MSD has answered this demand with an updated and improved version of the popular 6LS box

1958-1970 Chevrolet Biscayne

which can occur in severe conditions

525" lifter bore centerline

Good street performance with stock converter

Sealed Power Competition Series Main Bearing Set - SB Chevy 400 - 3/4 Groove - .001" Thinner Size 20-OTL-NR-M MSD has answered this demandSealed Power builds engine bearings using materials and alloys engineered for demanding applications. We tailor our bearings to withstand punishing racing conditions. Our bearings are proven winners in NHRA, NASCAR and IHRA competition. Sealed Power engine bearings include a patented contoured flange design that increases thrust load capacity and a three quarter length oil groove that enhances lubricity without compromising load capacity. The