Pontiac 455 OEM 2 Bolt to 4 Bolt Straight Billet Steel Main Caps 562" (40mm) axle shaft

562" (40mm) axle shaft

heavy-gauge steel radiator supports are exact replacements for your factory support

and hardware

Speedmaster has designed these main cap girdles to reinforce the alignment of the main caps in high performance applications and counter the limited webbing and weaknesses of those stock blocks

They will mount anywhere in the engine to eliminate any clearance issues

Pontiac 455 OEM 2 Bolt to 4 Bolt Straight Billet Steel Main Caps 562" (40mm) axle shaftSpeedmaster billet main caps are precision CNC machined from superior quality 1025 billet steel. These extreme main cap sets consist of the center three caps. Speedmaster billet main caps improve reliability in highly stressed engines by reducing distortion of the main bearing bores, and increasing the cap's resistance to closing up under high loads.