After a bit more poking around, there are at least a few non-specialty options for a decent sized clutch in 14 spline. If you run Rock Auto for a late 80s Astro van, you get a few choices.
With that 14 spline setup, do I need some sort of oddball pilot bushing? Different shaft diameters, I believe.
I looked at LugNutz page a bit more and think I have a better feel for how much trimming is needed on the input shaft and the bearing retainer.
I have a spare 235 engine out in the shed with what appears to be a very newly rebuilt cylinder head. I need so see what it has for a clutch and flywheel. If they happened to be as “nearly new” as the head…I’d be inclined to make the input shaft change and use that 10 spline stuff. If they are not, I’d kinda lean to just running a 14 spline clutch setup.
