NEW Ductile Iron Main Cap Sets for 360's

(note) SPLAYED VS. STRAIGHT

Several people have asked me if these are spayed or straight bolts. They are STRAIGHT, and in this application, straight is better. If you look at the main cap bulkhead, where it ties into the oil pan rail on your 360, you'll see that there is a divit there. A splayed bolt cap would put the load from the additional bolts into the thinnest part of the structure, actually removing meat from the casting where it is needed the most.
Also, the benefit of these caps is not so much the added strength of the outboard bolts, but rather the upgrade in material over stock. You could cut the extra bolt bosses off these caps and you would still have a unit more than twice the strength of stock.
Horsepower does not break cast caps, but detonation does. If your combination is blown, turboed, sprayed, or is just a high squeeze pump gasser, sooner or later it's going to rattle...and these things are your best bet for keeping the crank inside the oil pan!