Anyone local to me capable of correcting errors on a 904 race build
I don’t understand your post. The trans uses a lockup input shaft that requires that unique spline count. According to Copes receipt he intended to use a lockup input shaft. But his Bill also says I assume that ptc makes a non lockup converter that uses the lockup spline count, but just doesn’t have a clutch in it. If the converter was supplied correctly, then the mistake was that the trans builder put in the wrong pump gears
for the converter that was intended to be used.
The problem I have with the way Cope is supplying this trans is that you are limited in your torque converter selection.
AFAIK all the major high stall race converters use the traditional non lockup spline count in the converter. I agree with Cope in his video that the late 80,s lockup
904,s were the strongest versions ever made, and came with a steel spline 2.74 first gear ratio.
But to use it in a race application you need to rework the trans to eliminate the lockup feature which is not easy to do and can require some custom machining on a two ball non lockup pump say from a slant six
Like I did. But It appears that what Cope has figured out is how to eliminate the lockup feature by just using a unique ptc converter
to perhaps save the customer some money,
and eliminate all the custom machining that would be required normally. Imho though,
the drawback is limited race converter selection, and an inherently weaker input shaft because the lockup input shaft is not a solid shaft. Perhaps for certain applications,
this is acceptable. But it appears that the OP
was expecting to see a standard non lockup
Input shaft and having everyone question
That the wrong shaft was installed.
But in this case it was not the wrong shaft, it was the wrong pump gears or the wrong converter hub was ordered.
hard to tell from the picture angle in post #13, but if it dead ends where those lower splines are that’s definitely not going to work. Wrong drive hub, wrong internals, someone didn’t get a memo….