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So the front & rear mains are not cross bolted? I guess I thought all the after market blocks were cross bolted on all five mains....



KB's do not, IndyMAXX blocks do and I think World block do as well. The 3 main caps in the middle of the KB are huge, they stand about 1.5" beyond the oil pan rail where others are even with the oil pan rail.

My Mega block only has cross bolts on 2, 3 and 4 mains.

The KB water block is rated at 2,500hp, not sure what the others are rated for, maybe it's not necessary or maybe they think the 3 in the middle carry most of the load??