My flexplate instructions say to check the alignment between crank and trans shaft. I have a professionally rebuilt '68 383 and a ProTrans 727 TF. Any suggestions or cool tool recommendations to measure this in the tight space? Thanks.
Transmission/Crank alignment help
- Thread starter Walkstep
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The only way I know to do it with an automatic is with the transmission case empty.
A408Cuda
Well-Known Member
I was thinking that was only for a manual when you true up a bell housing, never heard of needing to do it on a auto before.
What flexplate do u have. Thanks. Kim
Yes sir. That's how it's done. But I must say, in all my years of doing this, I have never once worried about it or had a problem with it.
A408Cuda
Well-Known Member
I did my quick time and found that its about .010 out, i ground the powder coating of the mating surface and the paint off the block and it got it about .006. they say it needs to be .005 or less runout but i figured I was close enough. I guess we will see.
I don't think you'll have an issue. We'd probably all be surprised how far out millions of stock ones were that flew down the drag strip.
The Mopar Performance chassis manual mentions that automatic transmissions are much more tolerant to misalignment than manual transmissions are. It does recommend alignment of the automaticu but the case has to be unloaded. The only time I have seen a problem with it was in a 1985 Blazer with 700R4 that was so far out behind a 2.8 v6 that it would break the front drive tube ears off the torque converter slots after about 40,000 miles. It turned out to be the flange on the engine block was out, but I don’t know by how much...
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