I am getting ready to make my R5 crank adapter.

My question is does it need to be 4340 steel? OR can it be 1045 steel? It will be .375 thick.

This engine will be around 850 hp 560 tq. Just want to make sure this will be strong enough.

Thanks

Last edited by R5P7Duster; 02/26/09 07:44 PM.
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