Milodon 11550 Olds 400, 425, 455 (Straight Bolts) 2 Bolt Main Caps

Milodon 11550 Olds 400, 425, 455 (Straight Bolts) 2 Bolt Main Caps

Your Price:$303.95
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Part Number:MIL-11550

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This is a Special Order Item
The Manufacturer Offers Drop Shipments For Special Order Items:: Yes
Manufacturer's Drop Ship Fee For Special Order items If Desired: $ 5.00
Milodon Drop Ship Special Orders typically ship within 2 days. Delivery of certain Special Order oil pans can take up to 4-6 weeks. If delivery is critical for any Special Order item, please contact us prior to placing an order to confirm the lead time.
Milodon 11550 Olds 400, 425, 455 (Straight Bolts) 2 Bolt Main Caps

These aftermarket main caps will strengthen not only factory 2 bolt blocks, but also 4 bolts. Unlike the factory main caps, these not only have more cross sectional strength, but the real strength secret is in the angled side bolts!

The side bolts are angled so they pull from the side walls of the block and not the flimsy main web area. A bolt that is angled will require a massive amount of additional load to flex or stretch, let alone break, compared to a conventional straight up bolt. The side bolts heavily load the main cap against the register step which stops "cap walk". It is main cap walk that causes a great amount of unforeseen bearing damage and horsepower loss.

Milodon main caps are precision machined from high strength ductile material which has the proper balance of strength yet is not too rigid like a billet main cap to allow transfer of increased shock loads to the crank and bearings. In this case, more is not better when it comes to hardness.

Only .030" of material removal is required upon initial installation, which will allow 100% cleanup on a damaged block. The drill bushing used to drill and tap the side bolt holes is included in the kit. The side bolts can be installed by anyone with a hand drill and a tap. If the block has square main registers, the block needs only a standard align bore to finish the job. Milling the mains is only necessary if the main cap registers are not square.

All necessary bolts, washers and the drill bushing are included in the center three main cap kit. For maximum strength the installation of Milodon main studs are highly recommended.

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