Originally Posted by JohnWayne
Does all cranks fit to all transmissions then?
I think there may be a miscommunication here. I think John is calling the pilot bushing an adapter.
So, in that light, yes and no.
During the 60s and early 70s most if not all mopar cranks were drilled and machined for the pilot bushings (adapters). I have even taken apart (believed to be virgin)engines from automatics that had the bushings installed! But even if the crank is not machined for the bushing, NAPA, here in N.America, makes a bushing for a drilled-but-not-machined crank. Furthermore, Chrysler now stocks a ball bearing pilot that uses the convertor register to do the piloting. (very nice and recommended)
The only time you might have a problem is fitting a 67up convertor to a 66down crank, or vise-versa. The TC registers are different. But this does not concern you as you are staying with the 833.
Now heres a question for someone more knowledgeable about early LAs;
What are the chances that those TRWs, or the KB167s, weigh about the same as the stock cast 273 slugs.Then he could use the stock,steel,273 crank which has the correct pilot bushing, without re-balancing?
John I know you want that teener to be a drop-in but this might be worth considering.If you get all your ducks in a row, you should be able to fit the crank-swap, and the engine-swap, into a long weekend. Around here a re-balance is about a days pay.