I am looking at putting an old sidemount whipple on my 454. Just looking for some input as to will the stock forged crankshaft hold or should I look into an after market bottom end.

stock GM forged cranks are very good..better than a lot of the atfermarket ones till you get to the $2500 and more units..

I thought u had to droop compression to run a supercharger,,,so u would need a smaller ckrank anyways ???!!

NO ????

other then that ,,,thats what i run in a 12:1 compr. engine @ 7000 RPM and its fine.