Its late and I am tired..can someone tell me how I should have my C4 tranny rebuilt for my buggy. First I will be running a 3.8 mustang motor.. Later on I may run a 302 or 351 so i need it to take some abuse..

What stall should I have ..

Any upgrades should I do..

More torque will make the same converter stall higher... so you'll need to buy a "looser" converter for the 3.8, and then change to a "tighter" converter when you drop the V8 in.

Manual valve body, chromo input shaft, 6 pinion planetary, good clutches, steels and bands... you should be able to beat on it for a while.

Look at the parts upgrades that are used in transmissions for drag racing.

EDIT: stall speed is really based on personal preference and rig setup... generally, 1800-2000 would work well in most situations, and would be loose enough to not push the brakes bad in low-low, if you have a doubler or crawler gears.

I feel, much higher than 2000 and you'll have to worry about keeping the trans cool.

Go to fordmuscle.com and search for the monster c-4 thread, lots of good info there.


Brewchief:D

Go to fordmuscle.com and search for the monster c-4 thread, lots of good info there.


Brewchief:D

x2 happen to have the link in my fav's

http://www.fordmuscle.com/forums/c4-transmissions/416584-monster-c4-thread-text-edited-way-long-version2.html

i've found the C4 forum to be a pretty good resource

thanks..
I will do some research..

will this overwhelm most transmission shops to upgrade these or are most aware how to upgrade them..

thanks..
I will do some research..

will this overwhelm most transmission shops to upgrade these or are most aware how to upgrade them..
It will overwhelm most shops.




Main reason the tranny is soo old. Most shops will do a stock rebuild, you've your work cut out for you to find a good 'local' one. At least for me they will all tell you they do the best job.

There are several basic mods the C4 should have as a standard build. You don't need the 6 planites gears, a Quality C4 build will handle both motors. Follow the link above, best site I've ever read.

I rebuilt my own C4, and suggest it to anyone who can follow directions... that and be diligent with the cleaning! It's holding up nice behind a health 5.0. Make sure you've a gauge and a couple of HUGE coolers.

It will overwhelm most shops.






Absolutely, either find a good builder or read up and do it your self, don't trust it to just any trans shop. I lucked out and ended up using one of the best builders in the country, when my trans was right it was perfect, unfortunately I was still able to screw it up:laughing:

Brewchief:D

I wouldn't mind building it...I just dont have the time..

I wouldn't mind building it...I just dont have the time..Have a link to how you build them?