Main Cap Girdles

The forces of higher rpm and power-adders can overwhelm main bearing caps and fasteners, causing the caps to walk, fastener threads to fatigue, and your main web to crack! Speedmaster™ main cap girdles dampen the harmonics that caused the main caps to move in the first place and effectively tie all five main caps together for enough brawn to produce big horsepower capabilities with a stock block!. 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.

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11 Products

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$119.10$71.70

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11 Products

Speedmaster
Ford SB 289 302 Windsor Steel Main Girdle Only
US $97.90
No Reviews yet

Out of Stock

PCE
Ford 302 351C Cleveland Natural Steel Main Girdle Only
US $89.30 US $127.70
3 Reviews
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Out of Stock

Speedmaster
Mopar Chrysler BB 383 440 Zinc Finished Steel Main Girdle Only
US $110.70
No Reviews yet
Speedmaster
Chevy 400 Zinc Finished Steel Main Girdle Only
US $71.70
1 Review
Speedmaster
Chevy SBC 350 Zinc Finished Steel Main Girdle Only
US $91.50
No Reviews yet