C6 aluminum tranny pan

Well............after fighting tranny problems for quite some time, it seems I cranked my case. I talked to Frank and he recommended a aluminum pan to structurally help strenghten the case. Question is.........has anyone experienced this problem and anybody got a pan laying around? I've got $4300 in this tranny and I'd sure hate to be putt'n something else in my Ford (turbo 400) wow!!!!!!!!!

http://www.460ford.com/forum/showthread.php?t=136631

A few weeks ago. What servo and lever are you using? Too much can break the case .

Hey Greg,as you know,I feel your pain.I've never split a case but we sure as heck are taxing the chit out of things as both our cars are no light weights.I talked with a guy a week ago and he said wright off that to much line pressure can be a result of some of our problems.This could be caused by a coolent line restiction.My converter showed no sign of ballooning but may have just been shoved forword through pressure to take out the thrust and then number 3 rod bearing.Just another of many things spoken as I try to find the answer.I herd your go'n to be in town Wendsday......We need to Drink brother...lol

Hey Greg,as you know,I feel your pain.I've never split a case but we sure as heck are taxing the chit out of things as both our cars are no light weights.I talked with a guy a week ago and he said wright off that to much line pressure can be a result of some of our problems.This could be caused by a coolent line restiction.My converter showed no sign of ballooning but may have just been shoved forword through pressure to take out the thrust and then number 3 rod bearing.Just another of many things spoken as I try to find the answer.I herd your go'n to be in town Wendsday......We need to Drink brother...lol

Steve......................is it the curse of 57? Heck my motor and your tranny would be a hell of a combo. Ordered an aluminum pan for it and a re-case job I guess. Did you see that girdle in this post. Old school Kool!!! Will be at Shep's tomorrow for round 4......and they say third times the charm. Saw J Browns 64 at the track Saturday. Seems to be having traction issues. Anyway, swing out to Steves or call tomorrow.

thats a big beast, i ditched my c-6 for a c-4 to lighten up the drivetrain myself,

thats a big beast, i ditched my c-6 for a c-4 to lighten up the drivetrain myself,

I wish I could make a C4 (free hp too) live behind 3850#'s and 800hp and last a season. Everyone I've talked to says don't bother try'n.

J.B. did get the car hooked and ran 115mph.I'll give a call this after noon.edit note....Did you know that my aluminum pan,that I've run since 78, was made a few blocks away from where you and your brother lived in Anoka.Brom Manufacturing.

57merc,

Call Jay at Broader Perofmance, sales@broaderperformance.com, he has done a lot of pressure and flow testing.

Mike

A cast pan will had a hell of a lot of strength. Noelke uses one on the monster truck transmissions and he's never cracked a case. What's interesting is that a year or so ago when we were going through one of the trannies we were doing a quick air check using about 120psi air pressure. When the servo would apply the band the whole case would flex about .125! I couldn't believe that it could do that and NOT crack rather quickly. Later when the trans was in the truck with the engine running he tried it in all gears while I watched the case. I could still see it flex but not anywhere near as much, probably only about .030 or so. That must not be enough to cause it to crack.

In the transmission I think he's running about 200-240psi line pressure. The band seems to be the weak area on the C6 because it has to stop and or release the high gear drum so quickly. We're using a band that's made from steel about 3 inches wide and .100 thick. Then it's Kevlar lined. If everything is right it'll last for about a year in a monster truck, no problem. At that time the converter needs to be freshened anyway. C6's are tough and generally only break or have trouble because they are not built correctly.

Dave, is there one brand (EDIT: PAN) that you would recommend using over another? I would imagine pricing on these is pretty similar between brands.

Tom

We're using a band that's made from steel about 3 inches wide and .100 thick. Then it's Kevlar lined. If everything is right it'll last for about a year in a monster truck, no problem.

Dave, are these bands available for purchase or are they specially built for him?

A cast pan will had a hell of a lot of strength. Noelke uses one on the monster truck transmissions and he's never cracked a case. What's interesting is that a year or so ago when we were going through one of the trannies we were doing a quick air check using about 120psi air pressure. When the servo would apply the band the whole case would flex about .125! I couldn't believe that it could do that and NOT crack rather quickly. Later when the trans was in the truck with the engine running he tried it in all gears while I watched the case. I could still see it flex but not anywhere near as much, probably only about .030 or so. That must not be enough to cause it to crack.

In the transmission I think he's running about 200-240psi line pressure. The band seems to be the weak area on the C6 because it has to stop and or release the high gear drum so quickly. We're using a band that's made from steel about 3 inches wide and .100 thick. Then it's Kevlar lined. If everything is right it'll last for about a year in a monster truck, no problem. At that time the converter needs to be freshened anyway. C6's are tough and generally only break or have trouble because they are not built correctly.

Wow Dave..............scarey to think it could flex that much. I recased my tranny last weekend. Added a summit aluminum pan so I hope its stiffens things up. The band (3" rigid) was smoked and the drum didn't look so hot anymore so I repleaced that also. Went with a 2 1/2" flex kevlar and a heavier (stock) servo spring over this sommex heavy spring that I had in there that came with the servo. Quick test infront of the house and it seems to be working good. Guess I will see for how long???????????/

I'm not really sure what brand the pan he uses is but it's heavy, cast and it has some ribs on the bottom.

As far as the band goes I don't know where those come from but it's a super heavy duty piece that looks home made. Noelke has sent them off to be relined several times. It has a billet servo cover and lever that give it some very serious holding power.

Here's a video of this particular truck in action. It sounds like he shifts it to 2nd for most of the time too. The band is of course holding the drum the entire time and it's under a heck of a strain too. In this application if the band ever "gives" any at all it's cooked.

http://www.youtube.com/watch?v=nkrpOq937lc