- Engines & Components
- Engine Block Main Caps
- Speedmaster Engine Block Main Caps
Speedmaster's precision Engine Block Main Caps are CNC-machined from 1025 billet steel and are offered as straight bolt stock replacements or with splayed outer bolt holes. The splayed engine main caps contain 10 degree angled outer holes that positively reinforce and tie the block together. Speedmaster billet steel engine main caps are used to improve reliability by reducing main bearing bore distortion, and increase resistance to closing up when the engine is under a high load. Speedmaster Engine Block Main Cap Sets contain the center three caps.
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Main Cap Fasteners Included
Machine Work Required
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PRICE
Ford
$112.50
Estimated to ship direct from manufacturer on 10/30/24, pending manufacturer availability.
Lowest Price Guarantee
$112.50
Estimated to ship direct from manufacturer on 10/30/24, pending manufacturer availability.
Lowest Price Guarantee
Speedmaster PCE289.1009
Speedmaster PCE289.1009 Billet Steel Main Caps, Ford 351W, OEM 2-Bolt to 4-Bolt Splayed
$105.10
Ships Monday
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Speedmaster PCE289.1011
Speedmaster PCE289.1011 Ford 429 460 OEM 2 Bolt to 4 Bolt Splayed Billet Steel Main Caps (Middle 3 Caps)
$151.10
Ships Monday
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GM
Speedmaster PCE289.1001
Speedmaster Billet Steel Main Caps Small Block Chevy 350 [OEM 4-Bolt Replacement]
$99.80
Ships Monday
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Speedmaster PCE289.1018
Speedmaster PCE289.1018 Steel Main Caps Small Block Chevy 350, 4-Bolt Splayed
$314.00
Ships Monday
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