Chevy BBC 454 OEM 4 Bolt Replacement Billet Steel Main Caps
Details
| Brand: | Speedmaster |
| Part Number: | PCE289.1005 |
| Part Type: | Main Cap |
| Main Cap Position: | 4-center |
| Main Cap Fastener Style: | Straight |
| Main Cap Fastener Quantity: | 4-bolt |
| Main Journal Type: | Large journal |
| Main Cap Fasteners Included: | No |
| Main Cap Material: | Billet steel |
| Machine Work Required: | Yes |
| Quantity: | Sold as a set of 4. |
| Notes: | Replacement for factory 4-bolt blocks. |
Speedmaster billet main caps are precision CNC-machined from superior-quality 1025 billet steel. 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 four 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.