Speedmaster PCE289.1005 OEM 4 Bolt Steel Main Caps for Chevy BBC

Chevy BBC 454 OEM 4 Bolt Replacement Billet Steel Main Caps PCE 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. PCE 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. Precision CNC-machined from superior-quality 1025 billet steel Improve reliability in highly stressed engines by reducing distortion of the main bearing bores Increasing the cap's resistance to closing up under high loads