Re: was Re: SR-4/T-5 Yoke?

[farna@xxxxxxx]

That said, you should be able to make an adapter for the early bell to an SR4 or T5 (which mount the same). The early three speed and the SR4/T-5 have the same two upper bolt positions. The difference is the lower bolts. There is only 5-6" between upper and lower on the early bell, 8-10" on the SR4/T-5 (I'm recalling all this from memory, so don't think those are accurate numbers!). My thought was that the early three speed bearing retainer could be mounted to the SR4 by redrilling the SR4 case (SR4 retainer is much larger in diameter). Then a 3/8" aluminum (or 1/4" steel) adapter made. The adapter would have to be drilled for flush mount bolts for the lower holes on the early bell. Then it would extend down so that the lower bolt holes of the SR4/T-5 could have bolts w/nuts through the plate. The AMC SR4/T-5 has the 6.5" deep bell, and the early bells are the same depth. To make up for the 1/4-3/8" difference a special pilot bushing that sticks out from the crank may need t!
 o be made, just make sure it doesn't interfere with the clutch disc. You will have to use the slightly smaller early flywheel, which will limit you to a 10" cluthc disc, IIRC, but that shouldn't be a problem. You can retain the original pressure plate, but will need a disc of the correct diameter with the SR4/T-5 spline. 

I didn't go through with this plan, but did bolt an SR4 up to an early bell. You'll have to get the bearing retainer accurately centerd on the trans, as that's what locates the trans to the bell. I don't think the early bell can be drilled out to fit the large SR4/T-5 retainer, but I haven't looked at an early bell for quite a while. You'd need to take it to a machine shop that could accurately center it on a mill nad have it enlarged. The retainer issue and lacking funds/equipment to accurately center the retainer is why I decided against the project. I still have the SR4 I saved from a parts car and the extra early bell at my dad's farm in my parts stash! Unfortunately they are in SC while I'm 14-15 hours away in Delaware now, so can't answer any questions about them. The SR4 needed new synchros as it wouldn't stay in fourth gear. 


On July 21, 2005 andrew hay wrote:

> 1. all manual bells are not the same.  in later years there was a
>    multi-pattern bell that took [almost] all the transmissions, but
>    there are also single-pattern ones.
> 2. '64-'71 sixes have a completely different bellhousing pattern from
>    '72-up sixes.  there are just two trannies that fit the commonly
>    available early bell and both are 3sp.  you can't use a later bell.
> 
> a 5.0 t5 is an easy swap with a multi-pattern bell; it has the bolt
> pattern of the sr4 and the retainer size, splines, and iirc length of
> the t150.  maybe rear mount as well.  shifter location is something
> else though.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
> internet rambler                            is to see what all have seen
> 
> adh@xxxxxxxxxxxxxxxxx                       and think what none thought


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