
PRW Power 1745501 Billet Steel Main Caps Pontiac 421-455 Large Journal 4 Bolt
PRW Power designed these 1745501 Billet Steel Main Caps for Pontiac 421-455 Large Journal engines. Made from precision-machined high strength steel, these 4 Bolt Dowel Pinned Replacement or Conversion main caps allow transfer of increased shock loads to the crankshaft and bearings. By eliminating main cap walk and reducing main bearing bore distortion, they stabilize your crankshaft rotating assembly, improving engine performance and reliability.
PRW Power 1745501 Main Caps Features:
- Fits Pontiac 421-455 Large Journal engines
- Main Cap Bolt Quantity: 4
- Main Cap Bolt Style: Straight
- Main Journal Type: Pontiac Large
- Main Cap Material: Billet Steel
- Finish: Natural
- Machine Work Required: Yes
- Mounting Hardware Included: No
- Quantity: Sold as a set of 3
Notes: 4 Bolt Dowel Pinned Replacement or Conversion. Drill Guide included.
PRW Power has a wide selection of race engine components including rocker arms, valve covers, flexplates, main caps, and more. They are well known for providing noticeable performance gains at a value price.
Original: $315.06
-65%$315.06
$110.27PRW Power 1745501 Billet Steel Main Caps Pontiac 421-455 Large Journal 4 Bolt
PRW Power designed these 1745501 Billet Steel Main Caps for Pontiac 421-455 Large Journal engines. Made from precision-machined high strength steel, these 4 Bolt Dowel Pinned Replacement or Conversion main caps allow transfer of increased shock loads to the crankshaft and bearings. By eliminating main cap walk and reducing main bearing bore distortion, they stabilize your crankshaft rotating assembly, improving engine performance and reliability.
PRW Power 1745501 Main Caps Features:
- Fits Pontiac 421-455 Large Journal engines
- Main Cap Bolt Quantity: 4
- Main Cap Bolt Style: Straight
- Main Journal Type: Pontiac Large
- Main Cap Material: Billet Steel
- Finish: Natural
- Machine Work Required: Yes
- Mounting Hardware Included: No
- Quantity: Sold as a set of 3
Notes: 4 Bolt Dowel Pinned Replacement or Conversion. Drill Guide included.
PRW Power has a wide selection of race engine components including rocker arms, valve covers, flexplates, main caps, and more. They are well known for providing noticeable performance gains at a value price.
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Description
PRW Power designed these 1745501 Billet Steel Main Caps for Pontiac 421-455 Large Journal engines. Made from precision-machined high strength steel, these 4 Bolt Dowel Pinned Replacement or Conversion main caps allow transfer of increased shock loads to the crankshaft and bearings. By eliminating main cap walk and reducing main bearing bore distortion, they stabilize your crankshaft rotating assembly, improving engine performance and reliability.
PRW Power 1745501 Main Caps Features:
- Fits Pontiac 421-455 Large Journal engines
- Main Cap Bolt Quantity: 4
- Main Cap Bolt Style: Straight
- Main Journal Type: Pontiac Large
- Main Cap Material: Billet Steel
- Finish: Natural
- Machine Work Required: Yes
- Mounting Hardware Included: No
- Quantity: Sold as a set of 3
Notes: 4 Bolt Dowel Pinned Replacement or Conversion. Drill Guide included.
PRW Power has a wide selection of race engine components including rocker arms, valve covers, flexplates, main caps, and more. They are well known for providing noticeable performance gains at a value price.












