A999 as a street/strip trans.

motorpirate said

That is the 2nd time I have read the slant 6 pump/input shaft thing. Does it have to be slant 6 999? Or any non lockup 904?
I have a brother in law that is a machinist ( but not a transmission guy) and access to a large lathe and mill. Can we just copy the dimensions of the 999 pump for those 2 changes?

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It does not even have to be a slant six, just any 3 speed non lockup.
Yes you could just duplicate it on a lathe. If you do both it is one setup in the lathe. The bevel is just for clearance. If you try to put the 5 clutch 999 drum on the slant 6 stator you will see where the interference is. Do cut any more than necessary. Just enough to get the drum to seat and not rub. The beauty of this mod is you can then use any front drum, beveled or not. The sealing ring diameter
Machining is only necessary if you want to use the 4 clutch 999 forward clutch hub. This hub is bigger in diameter in the sealing ring area and will not slide into the bore on a non lockup stator.
If you use the slant 6 clutch, no machining is required.
Also if you use the 999 forward clutch hub you will have to press out and change the input shaft to the non lockup one. If you use the slant 6 forward clutch hub and the input shaft that's already in there,the whole job is a bolt in.
Another way to identify the correct stator is the non lockup has 2 balls and the lockup has 3. You want a 2 ball stator.