Car 4-speeds

[CG]

If I wanted to switch from a truck 3-speed to a car 4-speed is there anything special I need to do or look out for?

[jgrh64]

input and /or output splines may be different

[Jim_PA]

Originally Posted by CG

If I wanted to switch from a truck 3-speed to a car 4-speed is there anything special I need to do or look out for?

Yes, you need to flat shift it, and watch out for the tire smoke.

On a serious note though, if the 3-speeds are anything like th350's, you won't have any length problems. Most likely you'll need a th400 style slip yoke. I don't know enough about factory 3 speeds.

Hurst makes a shifter just for swapping car 4-speeds into trucks, might want to check that out.

[crazy longhorn]

Aw crap.....here goes from the bests of me old memory If you are running a saginaw trans(7 bolt side cover), you can replace that with a saginaw 4 spd, or M 20/21 muncie......same lenght , same spline. Be aware that the 68 up truck bells had a larger pilot hole than the cars did . 67 or older on the truck bell was 4 11/16 on the center hole, same as car, wheras 68 on was 5 1/8 ". If you run the saginaw trans, you can use the front bearing retainer from the 3 spd on the 4 spd trans......for the muncie swap, have a machinist cut you a ring, or opt for a 67 or older bell. the truck bell will require a nut & bolt on the bottom 2 bolts, as the car trans is not threaded in the lower ears like the truck(not a problem, my richmond 6 spd is running on a stock 66 bell). Im damn sure there are a few details left out (forgotten over the yrs).... just ask if you need more info..... L

[sodak69c10]

muncie's take the same input shaft as a th350 i run a muncie so if you need any pics i can take some shots of it

[Jim_PA]

Originally Posted by sodak69c10

muncie's take the same input shaft as a th350 i run a muncie so if you need any pics i can take some shots of it

Some also used the 10 spline input shaft, just something to be aware of.

[sodak69c10]

my mistake i just read what i typed i meant output shafts not input
th350s torque converts. duuhhhh...:nut: but anyways

[Jim_PA]

Originally Posted by sodak69c10

my mistake i just read what i typed i meant output shafts not input
th350s torque converts. duuhhhh...:nut: but anyways

They use different output shafts too. Most use TH400 style

[19673ontree]

the biggest thing to look out for on car 4 speed's is FINDING ONE !
they are gone ! I used to keep them 3 or 4 at a time , $50 buck's was a good price for one , you can't find a smell of one now !!
I should have my rear end kicked for not keeping some of them , I had a T10 BW out of a wrecked when new 72 TA !! I love a 4spd they are really fun to drive ,,,

[sodak69c10]

Originally Posted by 19673ontree

I love a 4spd they are really fun to drive ,,,

no argue ment there

[Jim_PA]

Originally Posted by 19673ontree

the biggest thing to look out for on car 4 speed's is FINDING ONE !
they are gone ! I used to keep them 3 or 4 at a time , $50 buck's was a good price for one , you can't find a smell of one now !!
I should have my rear end kicked for not keeping some of them , I had a T10 BW out of a wrecked when new 72 TA !! I love a 4spd they are really fun to drive ,,,

Look for super t-10's early 70's all the way up to 82 in Camaros, Firebirds and maybe others?

They are basically an updated muncie, usually not as hammered as the muncies, and have a wider selection of gear ratios.