Milodon aftermarket main bearing caps not only strengthen factory 2-bolt blocks, but they will also add a measurable degree of strength to 4-bolt blocks. They are made from precision-machined, high-strength steel, which has the proper balance of strength and flexibility to allow for the transfer of increased shock loads to the crank and bearings. The secret is in the side bolts. They are angled so that they pull from the side walls of the block and not from the flimsy main web area. They'll also load the cap against the register step, which will prevent dreaded "cap walk." They can be installed by anyone with a hand drill and a tap and they come with the necessary bolts, washers, and drill bushing to complete the installation. Milodon main cap kits are available in your choice of angled or straight bolts.

More From This Category

Dart Main Cap, Interior Ford Iron Eagle 351/SHP Steel, Each

Dart Main Cap, Interior Ford Iron Eagle 351/SHP Steel, Each

$140.16

View
Dart Main Cap, SBC LSN21/2 351 Steel Hone Ready, Set

Dart Main Cap, SBC LSN21/2 351 Steel Hone Ready, Set

$1,454.52

View
Dart Main Cap, Rear SBC Aluminium/Iron Eagle 400MB Steel Hone Ready, Each

Dart Main Cap, Rear SBC Aluminium/Iron Eagle 400MB Steel Hone Ready, Each

$632.06

View
Dart Main Cap, SBC Little M 400MB Steel w/ Rear Cap, Set

Dart Main Cap, SBC Little M 400MB Steel w/ Rear Cap, Set

$1,032.36

View
Dart Main Cap, Interior SHP 350/Little M 305 Ductile, Each

Dart Main Cap, Interior SHP 350/Little M 305 Ductile, Each

$107.30

View
Dart Main Cap, Center Thrust LSN2 1/2 LS Bore Steel Hone Ready, Each

Dart Main Cap, Center Thrust LSN2 1/2 LS Bore Steel Hone Ready, Each

$305.72

View