Engine Kits

Howard Cams Small Block Chevy Extreme Billet Main Cap
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Howard Cams Small Block Chevy Extreme Billet Main Cap



Part #: H350S
List Price: $371.59
Our Price: $221.41
You Save: $150.18

Availability: In Stock



Reinforce your engine's bottom-end with Howards Cams.

Splayed Outer Bolts

Small Block Chevy 327 350

Howards Cams extreme billet main caps are precision CNC-machined from superior-quality low-carbon 1020 billet material. They come available as stock replacements (straight bolt) or with splayed outer bolt holes. The splayed caps feature 10 degree angled outer holes to positively reinforce and tie the block together. These extreme main cap sets consist of the center three caps. Front and rear caps are also available. Use these caps together for the ultimate in bottom-end stress and flex management. Drill bushings are included with caps requiring them. Howards Cams main caps feature side notches for easy removal and are proudly 100 percent manufactured in the USA. Line boring is required after installation.

  • Main Caps
  • Billet Steel
  • 3-Center
  • Splayed Outer Bolts
  • 4-Bolts
  • Chevy
  • Small Block
  • Set of 3
Product specifications
Machine Work Required Main Cap Fastener Quantity
Yes 4-bolt
Main Cap Fastener Style Main Cap Fasteners Included
Angled No
Main Cap Material Main Cap Position
Steel billet 3-center
Main Journal Type Quantity
Large journal
Brand Howards Cams
Machine Work Required Yes
Main Cap Fastener Quantity 4-bolt
Main Cap Fastener Style Angled
Main Cap Fasteners Included No
Main Cap Material Steel billet
Main Cap Position 3-center
Main Journal Type Large journal
Main Journal Type 350 mains
Part Type Main Caps
Product Line Howards Cams Extreme Billet Main Caps
Quantity Sold as a set of 3.