3 on the tree to sm465 conversion questions

Turbo4whl said:

You want to measure your bellhousing. Newer style is 6.29" trans flange to engine flange. For many years engines had a single engine mount in the front and used a mount on each side of the trans bell. This is how the many 6 cylinder engines were mounted. Your bell has those mounts.

As more V8s were installed the mounts were switched to 1 mount on the back of the trans and 2 mounts on each side of the engine. You can use that bell as long as the front to back measurement is correct, also the diameter of the rear hole needs match the trans. I think you need 5 1/8" hole.

Squares came with this style bellhousing:

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This will fit a 12" clutch.

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Turbo4whl said:

@Jamesz What year are the trans, bell and clutch parts from? Did you check the measurements I stated? If that early style is shorter front to back, you need the correct fork to match.

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Jamesz said:

I am not too sure what year. I bought the sm465 off him because I was pretty sure they were all the same until the late 80's I think. He said he pulled the bell housing and shifter handle off another truck which I believe was a later 60's model. But the clutch was brand new its just been sitting for a couple years.

I measured roughly what you said and it came in at around 6 ¼ inches.

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AuroraGirl said:

the clutch fork should be checked for being dimensionally close to where the later bellhousing would be, and that its in the same plane, so the z bar springs arent pulling sideways(id imagine this wears out the z bar quicker)

If it were placed different, modifying the zbar or the clutch fork wouldnt be too hard to get it in line

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Jamesz said:

*update*
I got the new bell housing and it does fit pretty well the clutch fork that came with it works as it should. I attempted to put the transmission in over the weekend but it wouldn't go in due to misalignment of the clutch. I used the doorman clutch alignment tool but it didn't work too well. Now I am taking out the pilot bearing that was in there for probably 30 years and putting a new one in (its very stuck). I'll get some pictures here in a little while.

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Jamesz said:

On the clutch release bearing which orientation should this lobe be pointed?

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