Speed Pro Competition Series Main Bearing Set - SB Ford 351M, 351W, 400 - 3/4 Groove - .010" Undersize 931073 Can be used in puller

Can be used in puller application when custom shroud is used

Attaches to dyno with (4) 1/2"-13 UNC fasteners Does not fit Ford FE

The Earls external safety clip is retained with a chain to keep the clip from being misplaced when disconnected

as well as an overboost shut-down feature that will shut the ignition off if boost exceeds the overboost target

Speed Pro Competition Series Main Bearing Set - SB Ford 351M, 351W, 400 - 3/4 Groove - .010" Undersize 931073 Can be used in pullerSealed 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