[74chevyflat]

ok here`s the inside scoop i bought a used th-350. installed it had a driveshaft made. everything hooked up new filter and gasket. went to take off didn`t want to go into gear.Later finding metal particles in the oil. instead of rebuilding the tranny gonna try and swap trannys, and i was wondering what yoke the muncie uses, is it possible i could use the same drive shaft as the automatic with the 4 speed or do these 4 speeds have a solid mount driveshaft with a slide yoke assembly on the tail end of the shaft? i`d apreceate the help. thnx

[bobscogin]

Unless your Muncie is one of the rarer M22 "rockcrushers" ,the TH350 yoke will fit. I think the "block to end of shaft" lengths of the Muncie and TH350 or close enough so that the complete driveshaft assemblies will interchange.

Bob

[jimfulco]

Sometime in the very early '70s, they went to a larger yoke on the Muncies. My old Muncie was a '68 model, and it used the same yoke as a T-350, PG, 3-peed stick, etc.

If your T-350 has the 6" tailshaft housing, it should be the same length as the Muncie (with bellhousing), within a fraction of an inch.

[k-star]

Muncie rear splines came in 2 flavors,,,,28 spline and 32 spline, As Jim pointed out the 32 spline came out in the 70 model year...

The chances are good you have the 28 spline transmission, if so it's a direct bolt in with the 6" tail th-350


Keith

[RippinRon]

I believe it was the super t-10 that used the th400 yoke.

[74chevyflat]

with a the 265 i think it is. it has a 4 speed.

Another question - " anybody know what horsepower rating thay can handle?", " What tranny came in the 4cyl. svt mustang ? it has a cast iron bellhousing , and it also has a rear mount shifter ,. The tailshaft section is aluminum. it`s just a curiousity. does anybody need anyparts for trannys? got a bunch of em taking up some storage space. 2, 3 speeds one car one truck. sm-465, sm-462, mustang 4 speeds x2, automatic th-350. oh and a Ford e.f.i. 302, 89 model with a c-4 tranny? sorry got a thing for the non-gas milage friendly gear ratios.just love the top end pull hehe

[fast68]

it was 27, not 28..

and sm462 did not exist

i think you mean sm420

id love to get ahold of the two top loader Gm truck trannies you have, but youre in puerto rico, so thats impossible lol


if thats really what trannies you have


hmm

good luck

[74chevyflat]

well yes they are he sm-465 and the sm420. but the sm420 has a broken top housing, i got it from a dump they had ran over the truck and snapped off the shifter lever. but i got it just in case parts would interchange.

you mean as in sm465 large ribbed case. weighs nearly 200 lbs. and the 420 is a smaller non ribbed . one has a higher gear than the other. oh and i have a set of three speeds a siginaw and a muncie 3speed. just kinda found those on the side of the road. the "old guy" said they were locked up.. hehe lucky for me i took the front shaft with an old clutch and turned it over hehe. that`s where it stood. never found a shifter. plus the lil trannies don`t look too appealing."sheer deficiency of size" I do`nt think they would hold up.