Hurry! Free Shipping Orders $149+ ends in 1 hours 57 minutes 31 seconds!
Original Parts Group Logo
US & Canada Phone Number 1-800-243-8355
International Phone Number 1-562-594-1000
 GTO Free Shipping Order $149+! Promotion Banner
Part fits the following years:1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973


1963-73 GTO Main Caps 350/400 – Angled

Part# G240067


Mfg# 11505

Be the First to Review

SAVE: $32.96 Retail: $355.95

OPGI Price: $322.99


Part Type: (P) High Performance, designed to improve performance
Years: Sold As: SET
2016 GTO Catalog Page: 313


Increased block strength for 2-bolt and 4-bolt mains

  • NOTE1: These high-performance items are not eligible for any further discounts or promotional pricing.

These main caps, whether they be for 2-bolt to 4-bolt conversion, or you're replacing the factory straight 4-bolt caps with the Milodon straight, or angled 4-bolt caps, you're increasing the strength of the block. Because the angled main caps place the side loading to the outside of the block, the caps are located against the main cap register in the block preventing cap "walk". Milodon main caps have more cross-sectional strength due to the high-strength ductile material and yet they aren't so rigid that they transfer shock loads to the crank and bearings. The center three main cap kits come with all the bolts, washers and drill bushings needed. Block machining is required for final installation.

Make & ModelYear RangeApplication Details
Pontiac GTO1963-1973 350/400 – Angled
Pontiac LeMans1963-1973 350/400 – Angled
Pontiac Tempest1963-1973 350/400 – Angled
Pontiac Grand Prix1968-1977 350/400, Angled
Pontiac Catalina1968-1977 350/400, Angled
Pontiac Bonneville1968-1977 350/400, Angled
It's Arriving Soon!
Please Call 1-800-243-8355
Point Coins Earn 322 points more info
Switch to Mobile Site »
If you see this, please contact your IT department and ask them to unblock