RoadRunner1970
Well-Known Member
I was told the crankshaft in my 440 is for an automatic and not the correct one for a 4 speed six pack car. So is there a difference, and how can I tell the difference when buying a crankshaft? Thanks All
News to me.....! The auto crank isn't drilled deep enough for the pilot/input shaft or machined for a pilot bushing.The auto crank has a locator so to speak pressed into the rear of the crank.Just remove it!
Pictures when I get home if needed...........
I had a billet Bryant crank and had to have that pressed in.I thought they were the same and not machined different..........News to me.....! The auto crank isn't drilled deep enough or machined for a pilot bushing.
Yup....but never said to cut the input shaft to fit And no, I have never done that but know several that have. I actually have a couple of 440 cranks that are original for 4 speeds that are still hanging around....As Cranky said... Cut 3/4" off the end of the input shaft and install a roller bearing in the flange bore. You'll see on mine I have a standard trans crank and pilot bushing, but my numbers match trans had the input shaft cut, by me, back in 1979 to install behind 440 I put in our old Fury II that was an automatic's engine. Needed the bearing to make it work again as input shaft not long enough to reach the pilot bushing.
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rich rehrenberg, has often said with his roller bearing no cutting is needed,they are for automatic shafts that has not been drilled.go to his site and see that bearing.Yup....but never said to cut the input shaft to fit And no, I have never done that but know several that have. I actually have a couple of 440 cranks that are original for 4 speeds that are still hanging around....
I know about the bearing but it still doesn't change the length of the parts......ya got to cut the end of the input shaft for it to fit if the crank shaft isn't drilled deep enough to accept it.rich rehrenberg, has often said with his roller bearing no cutting is needed,they are for automatic shafts that has not been drilled.go to his site and see that bearing.
You MUST cut the input shaft to install a standard to an automatics crankshaft.......
And you didn't have to shorten the trans input shaft? Also, the 'small' hole usually wasn't concentric with the rest of the other machined surfaces because it was just drilled and not machined.Napa used to sell an undersized pilot bearing made to fit directly into non finish drilled automatic crankshafts. I have used them,and they fit without modification.