c4 trans simple questions

88mudder · Oct 23, 2007

just got a c4 and know nothing about it. I have a few simple quick questions.

Where is the drain and fill bolts located? My trans pan doesnt have a drain bolt.

How much fluid does the c4 take?

Do u gotta fill the torque converter with trans fluid before operation?

Greatly appreciated!

projectnitemare · Oct 23, 2007

You fill the trans though the dip stick. There is a "pan fill" and a "case fill" C4. There is no drain bolt. You have to remove the pan to drain it. When I had my C4 I installed a drain plug kit in the pan. I want to say I complete fill is around 10 quarts but I forget exactly. Yes it is a good idea to put a quart of fluid in the converter before installing it. Make sure you get the converter seated properly, as in you will feel it engage in the input shaft and the pump. If you don't have it installed correctly you will wipe out the pump as soon as you start it. What year was the transmission made? There are a few variations in the C4 over the years. Pick up a rebuild manual, the will usually cover the C4, C6 and AOD in one book.

Matt

baddad457 · Oct 24, 2007

My C-4 holds 9 quarts with a deep sump pan. I put as much fluid in the converter as it'll hold and not run out when you stand it on end to stab it in the front pump. Not having it plugged correctly in the front pump breaks the pump gear when you bolt the motor and trans together. You don't have to start it to ruin the front pump, just the act of forcing the two together will break the pump.

1wicked88 · Oct 24, 2007

It probaby won't always break the pump gear when bolting it together. I've seen a few bent flex plates but by the time the engine was started the gear an pump was trash. Just take an extra minute when putting the converter in.

Matt

88mudder · Oct 24, 2007

my trans is still in the truck. When installing the new motor in with the flex plate and converter bolted together to the motor, will this make it hard to line up the shaft on the trans? How do u all do it? I dont wanna remove the trans.

baddis · Oct 24, 2007

STOP DO NOT INSTALL THE ENGINE WITH THE TORQUE CONVERTER ATTACHED. you will tear up the front pump and the converter.

v-8power · Oct 25, 2007

It would be better to put the torque converter on the tranny. Put some tranny fluid in it then put it on the input shaft. Then turn it slow while pushing (slighty) you will hear and feel it click in the second time. Then you are good to go.

baddad457 · Oct 25, 2007

baddis said:
STOP DO NOT INSTALL THE ENGINE WITH THE TORQUE CONVERTER ATTACHED. you will tear up the front pump and the converter.

Ditto, you'll break the front pump for sure doing it this way. :badidea:

88mudder · Oct 25, 2007

how does it work that way? I thought the flex plate was bolted to the motor as well as the converter. How do u bolt the converter and flex plate to the motor when the motor is on the trans?

budro · Oct 25, 2007

you attach the bolts from the flexplate to converter through the starter hole. You must take the starter off and do it that way

v-8power · Oct 25, 2007

When your tranny and engine are together you'll understand how to bolt them together.
You will have room to see the bolts easy enough.

projectnitemare · Oct 25, 2007

Definitely tighten the converter bolts though the starter hole instead of the inspection plate. It will make life much easier. You must put the converter in the transmission first, that's just how it works. It's not as bad as it seems.

Matt

88mudder · Oct 25, 2007

ok i got it now, thx for clarification everyone.

88mudder · Oct 27, 2007

having troubles getting the motor in! Played hell with it for 2 days now. I cannot get the motor to mate the trans. I try pushing it but it wont budge. Its frusterating.

baddad457 · Oct 28, 2007

If you have 4 old small block long head bolts, take these and cut the heads off, then chamfer the ends. Screw these into 4 of the bellhousing bolt holes (2 per side, one top and one bottom) in the back of the block. Line these new "studs" into the bellhousing bolt holes and shove the two together. I've done this in 3 engine installations now by my lonesome and it goes smooth as butter.

c4 trans simple questions

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