Car won't turn after installation of C4

[hest_c]

Ok, need some help. I just reinstalled my rebuilt C4 transmission on my 1967 Mustang with a 200. As I was bolting the torque converter to the flexplate, everything spun freely (not easily, but freely). Once that was done and I bolted the tranny to the engine block, nothing will spin. Is this normal? I did make sure the tranny was flipped to neutral so it was not locked in Park of Drive. I just don't want to start the car if things aren't lined up correctly and have my rebuilt tranny shredded! Thanks for any help!

 

[Thad]

If the pump drive on the torque convertor is not set into the transmission pump it will bind when all is bolted together.

 

[Does10s]

You have to install the tranny and the torque converter together as one assembly.

There's only one way to do this right or it won't work at all!

Will

 

[jrx347]

Sounds like the torque converter is not engaged to the pump. Loosen the trans from the block, remove the bolts from the converter to the flex plate. turn the converter until it goes into the pump. The converter needs to move back towards the trans about a half of an inch to engage the pump. Bolt the trans to the block. At this point you should still be able to rotate the converter to line up the bolt holes. Install the bolts and your done.
L8tr
Steve

 

[mannella]

what are you expecting to spin? if the trans is bolted to engine the only way you will get anything turning is with a pry bar on the ring gear and up against the bell housing you should get movement but it won't spin.

 

[Thad]

If torque contvertor pump drive is not fully or properly seated into the pump it will bind up making it impossible to move.

 

[80broncoman]

X2 on all of replys.

 

[mannella]

Again I'm sure if the transmission with the torque converter is bolted to the engine what can he spin? Maybe I'm not reading his question right.

 

[bubba22349]

The converter's hub (flats) needs to slide all the way and be seated (bottomed) correctly into the front pump. When installed properly there should be some clearance between the flex plate and torque converter with trans bolted to the back of the block. Hopefully you did'nt damage the front pump by bolting it together wrong

 

[rbohm]

8) the installation procedure the OP followed was faulty. he bolted up the torque converter first, then bolted the trans to the engine. the converter needs to fully seated against the pump, the trans bolted to the engine, THEN bolt the converter to the flexplate. hopefully no damage was done.

 

[wsa111]

I hate to give you the bad news, but you might as well pull the trans out & possibly replace the front pump.
Reminds me of a poor fellow who installed a used engine in a vehicle with an automatic trans, but forgot to remove the pilot bushing out cause the replacement engine came out of a stick shift vehicle.
You will be really lucky if you didn't damage the front pump. Bill opsie:

 

[powerband]

Hopefullly tranny wasn't bolted up hard to engine before problem was realized. As mentioned the tranny and converter can be thought of as installed together and then converter moved forward to be bolted to flex plate.

 

[hest_c]

Thanks for all the replies. Mannella is right, I was expecting to be able to spin the driveshaft by hand, like I was able to when it was a manual transmission, but after talking to a Ford MoCo Tranny guy who built race cars back in the day, I was informed that the only way to spin that drive shaft is with a prybar, which is what I did.

Got everything hooked up only to realize that I was missing the block plate, which I just ordered. This is what happens when you learn on the fly!

Thanks again for all the great advice, this site and its contributors are great help all around.