Speed Pro Competition Series Main Bearing Set - SB Chevy 302, 305, 307, 350 - 3/4 Groove - 3/4 Groove - 010" Undersize 421998 New version now available with

New version now available with 7-7/16" fitting to reach into spark plug tubes on overhead cam engines and Chrysler Hemis

Or to provide the ECU with an Input to turn on function such as an ignition timi

Mandrel bent for maximum flow

with a 60 day Ride Satisfaction Guarantee

Speed Pro Competition Series Main Bearing Set - SB Chevy 302, 305, 307, 350 - 3/4 Groove - 3/4 Groove - 010" Undersize 421998 New version now available withSealed 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