Thread: Advice on Broken keyway for Crank

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sorry no way in hell . when they spin the crank go under size you will need to take the crank out and get the nose spray weld reground to size and you will want a new hub and get the crank cut for the 6.00 clock key way. there needs to be a press on the hub have seen this happens on 454. have been there and done this .sorry to tell you but you do not want to half ass this if it comes rigth off bad things happen. and i have seen that to. there is alot of torsion getting drove thru the hub it need to be right chevys do not use bolts to hold the hub on it is press the crank bolt on engines that do not use press have a much bigger front bolt in the hub chevy is a small 1/2 not like many of other engines that have much bigger bolts .and there is less than a 1/4 inch a round the hub for this bell washer to work i do not think you can get enough tq on the 1/2 bolt to hold the hub on and drive a 3 inch belt and 420 cube blower ??on the 4 inch crank you would need a set of custom pistons about $800to900 for the pistons it would get you close to 427 but i do not know how big your bore is and it would need $$$mallory metal in the crank or run 454 fly wheel and damper or hub .if you are looking for a new crank i have a new gm L88 steel crank if needed