Stock C4 transmission

[leathermandave]

I installed my 1974 stock newly rebuilt C4 transmission, I “force bolted” the two together… A no-no… and I knew better. I didn’t have the torque converter fully seated… I believe that when you force that transmission to bolt up like that it crushes the pump. So it ran and moved itself along for a little while but eventually came to a stop and wouldn’t move any more. The engine would just rev up… My question is, will the rest of the transmission be ok? In total I drove for about 10-15 min before it wouldn't drive. Also looking for where I can get a stock replacement pump... Any thoughts on the transmission would be most helpful

 

[Viperwolf1]

C4 hard parts have been difficult to find since covid hit. Before then, you could easily find a rebuilt pump for about $75. Now you'll be lucky if you can find one for under $300. I have seen some all new aftermarket pumps in recent years, but they are very pricey. You can probably get new gears for a reasonable price if the pump housing and stator are in good shape.

As for the rest of the C4, you'll have to open it up to see what other damage may have happened. Certainly it has ground metal from the broken pump gears in it, so it will need a good cleaning.

 

[leathermandave]

Would you happen to have a recommendation on where to order a rebuild kit??

 

[joebronco73]

Looks like a number of different parts shops carry the rebuild kits and are in stock...here's a couple different options:

CJ Pony Parts - C4 Rebuild Kit

Jegs - C4 Rebuild Kit w/ Torque Converter

 

[Viperwolf1]

I would recommend taking it apart and inspecting it before buying any parts. If you're lucky you might only need gaskets and a pump.

Look here for parts: Whatever it takes https://www.wittrans.com/