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I understand that when using a 4 speed tranny, there is a bushing that must be installed in the back of the crank. My question is; do all cranks have the hole for that bushing? If you have an engine that came out of an automatic car, can it be used in a 4 speed car?
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It depends, some cranks destined for auto cars were drilled for the input shaft of the trans, some didn't. Some also came drilled but not finished. The crank in my car came partially drilled, and not finished so I had to get the pilot that uses roller bearings and lop off about 1/2 off the end of the input shaft on the trans to get it to fit.
I love Mopars so much I'm date coding the skid marks in my underwear.
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X2
The Idaho Andy
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Also if it’s drilled and not finished there is an undersized pilot bushing made that will fit.
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1) Put bellhousing on motor and bolt it down.
2) Take piece of 1/4" PVC pipe and mark one side FLYWHEEL and stick it thru the bellhousing and into the pilot shaft hole. Take a straight edge and place it on the bellhousing against the piece of PVC pipe. Center the pipe in the hole and mark on the pipe where the straight edge hits the bellhousing. This will give you the measurement from the end of the pilot hole to transmission.
3)Now take the PVC pipe and put the end that was just in the pilot hole and put it against transmission. Mark that side as TRANS. Take straight edge and mark PVC pipe where input shaft hits straight edge.
Now look at the PVC pipe. If the first mark you made is to the left of the one called TRANS, then you have enough clearance. If it is to the right, then the hole isn't finished off and you'll need to lop off the end of the input shaft. (Some people have drilled the crankshaft, but unless you get that 100% perfectly straight it's going to cause problems).
If you do go the roller bearing route, most parts stores carry them as they are still used on Challengers. I got mine from the dealer, it was actually easier than trying to explain it to the parts guy.
I love Mopars so much I'm date coding the skid marks in my underwear.
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Thanks to all for the great information.
Mike
