Engine Kits

C129M - Ford SB Main Bearing Set Coated Speed-Pro 3/4 Groove C129M

Ford SB Main Bearing Set Coated Speed-Pro 3/4 Groove C129M



Part #: C129M
List Price: $161.98
Our Price: $80.00
You Save: $81.98

Availability: In Stock



Ford SB Main Bearing Set Coated Std size Sealed Power Speed-Pro  3/4 Groove, Tri Metal, Competition Series Ford, Small Block, Sold as a set
Speed-Pro Competition Series main bearings were developed in NASCAR and Pro Stock competition. Speed-Pro Competition Series main bearings H-14 Lining material that is bonded to a premium 1020AK steel backing. That's covered with a nickel barrier, followed by a thin lead-tin-copper overplate. However, unlike other performance bearings, there is no flash tin layer on top of that.

Speed-Pro's engineers have determined that such a layer can actually move around under high loads--sometimes with undesirable consequences. The key to reducing fatigue wear in bearings is to keep the overplating thickness to a minimum

Speed-Pro Competition Series main bearings have 3/4 oil grooves for enhanced lubrication, while maintaining a maximum bearing surface area. They also feature Speed-Pro's exclusive contoured-flange thrust bearing technology for higher thrust-loading capacity.

Min. Shaft 2.2482
Max. Shaft 2.249
Min. Housing 2.4412
Max. Housing 2.442
Min. Clearance 0.0005
Max. Clearance 0.0026
Max. Wall 0.0961
Max. Length 0.89
Mfg. Ford
Family Small Block
Material Super-Duty Alloy
Groove 3/4 Groove
Set Type Performance Main Set
Part Comment 3/4 grooved

Flange Specs
Flange Bearing
Component Part No. 1784CHA
Position 3
Min. Shaft 2.2482
Max. Shaft 2.249
Min. Housing 2.4412
Max. Housing 2.442
Min. Clearance 0.0005
Max. Clearance 0.0026
Max. Wall 0.0961
Max. Length 1.133
Mfg. Ford
Family Small Block
Material Super-Duty Alloy
Groove 3/4 Groove
Set Type Performance Main Set
Part Comment 3/4 grooved
Set Contents Main Brg.