More bad luck...

[Bradleyrj]

POOP! Mark (my tuner) came down and we were finalizing the tune. Went for a hard acceleration...was only about 1/2-3/4 throttle hit second spun the tires some, hit third and POP! Its at least the input shaft. No gears in any direction, engine just free revs in all gears. The good thing is it was pulling like a space shuttle when the trans popped. This car is making some power thats for sure ( For a street car) Even with three people (Mark, his son and myself) in the car I could easily tell the car is making big power. I have already located some parts for the trans rebuild, depending on how bad it is. Probably at least the input shaft and twisted the splines out of the front drum..

[ShawnBoyMoody]

Because racecar.

[jmd]

srry to hear about the trans.

[04ctd]

Because racecar.

should have had the AC on, that would have limited crank horse power, and saved the tranny?

well, at least the rest is working good!

[ForceFed4g63]

That sucks, hopefully it's just the input shaft, mine had to be replaced after a hard pull a while back as well.

[Bradleyrj]

Well Forcefed, was good to meet you and the wifey today. Cookies were off the chain. I got home and tore into mine. I got the input shaft. Whats your damage?

http://i99.photobucket.com/albums/l289/BradleyRJ/2012-11-03_23-00-52_773.jpg

Going to drop it off this week and get it checked out , flushed convertor and the other piece out of the convertor (my magnet wont pull it out)

[ForceFed4g63]

It was good meeting you as well! Well at least you figured it out, after some research I'm thinking mine is the input shaft as well, good luck getting yours back together!

[oldskoolstang]

That small shaft will continue to break on that AOD with the power you make, especially if you have a lockup converter. If you can afford it get a non-lockup converter and one piece input shaft.

I think I have a spare one of those small shafts if that's all you need....

[gearmesh, inc.]

I thought AOD at first glance myself, until I noticed the bolt on C-4 bellhousing and the only remaining splines of just the stator support.

Get a hardened shaft and that should take care of that issue. That is, unless that was a hardened one that broke! :eek:

Just watch out that you don't have one of the earliest C-4s with the oddball 24 spline shaft on the converter end. Those are a big no-no for any kind of decent power.

Any other goodies you have in that C-4 for your newfound power level?

[Bradleyrj]

Not much really, billet servo, rmvb. I want to fully rollerize it, better front drum, upgraded planteries... but cant do it all at once. Its got good clutches and steels now and a good convertor.

[MonteC]

That small shaft will continue to break on that AOD with the power you make, especially if you have a lockup converter. If you can afford it get a non-lockup converter and one piece input shaft.

I think I have a spare one of those small shafts if that's all you need....



You said AOD. But nothing after that you said says AOD.

[MonteC]

Not much really, billet servo, rmvb. I want to fully rollerize it, better front drum, upgraded planteries... but cant do it all at once. Its got good clutches and steels now and a good convertor.

Talk to 1iron or SG99. I think both of those guys are planning on ditching their c4's. Might be able to scoop up a good trans for a good price. I think Gerald built both of them and we have both been back into them to freshen them up one time or another.

[Bradleyrj]

Talk to 1iron or SG99. I think both of those guys are planning on ditching their c4's. Might be able to scoop up a good trans for a good price. I think Gerald built both of them and we have both been back into them to freshen them up one time or another.

Thanks. I really just need an input shaft right now but I have to get the broken piece out of my convertor and make sure its not a 24 spline setup.

[1iron]

Thanks. I really just need an input shaft right now but I have to get the broken piece out of my convertor and make sure its not a 24 spline setup.

The only way to be sure that the converter is clean is to have it cut open.

[Bradleyrj]

Going to. Taking it to Dave this week but if its a 24 im going to get a new convertor.

[oldskoolstang]

You said AOD. But nothing after that you said says AOD.

What?

[oldskoolstang]

I didn't realize it was a c4, didn't really look at the pic long. I do now..... I also have a stock 26 spline c4 input shaft as well, if you want it.....You might as well buy a good one they aren't that expensive. If it's a case fill it should have the 26 spline input shaft.

[Bradleyrj]

I have a stock one I could throw in but I think I'll get a good one so next time something goes wrong its worse like the front drum...

[oldskoolstang]

The last C4 I had I upgraded to a 6 pinion planetary, 300m input shaft, full rollerized internals, good clutches, good drums, billet servo, 2 qt deep pan, and rmvb. It held my 400-450 whp just fine, but it didn't last when put behind a 306 with a turbo. The clutch surface area is just so small on a C4....

[1iron]

The last C4 I had I upgraded to a 6 pinion planetary, 300m input shaft, full rollerized internals, good clutches, good drums, billet servo, 2 qt deep pan, and rmvb. It held my 400-450 whp just fine, but it didn't last when put behind a 306 with a turbo. The clutch surface area is just so small on a C4....

Must have been a bad ass 306. My C4 needs refreshing every year but does alright with a small shot.

[Qwik_Sn95]

Must have been a bad ass 306. My C4 needs refreshing every year but does alright with a small shot.

It does alright....I didn't bother to rebuild. I just replaced. Glide baby.

[gearmesh, inc.]

I wouldn't place too much emphasis on rollerizing a C-4. The stock style thrust washers can take much more impact loading than roller thrust bearings. Also, more metal needs to be cut out of various thrust faces to fit the roller bearings, which takes a little strength away from some of the hard parts.

The average drag racer won't be able to tell a difference in their timeslips between thrust washers vs. rollerized. A rollerized C-4 would be mainly beneficial to the class racer where any edge you might get from a little less rotational friction would be financially worth it.

[1iron]

I wouldn't place too much emphasis on rollerizing a C-4. The stock style thrust washers can take much more impact loading than roller thrust bearings. Also, more metal needs to be cut out of various thrust faces to fit the roller bearings, which takes a little strength away from some of the hard parts.

The average drag racer won't be able to tell a difference in their timeslips between thrust washers vs. rollerized. A rollerized C-4 would be mainly beneficial to the class racer where any edge you might get from a little less rotational friction would be financially worth it.

^^^^listen to this guy^^^^^

[oldskoolstang]

The one I had had everything rollerized because the guy that built it wanted to do that. Wasn't my call. I don't think it helped anything, but it made him happy. He was tired of me breaking C4 after C4. I broke 4 in 2 years in my 3300-3400 lb 70 Mustang. I never broke or had any problems out the last one, Qwik_sn95 hurt it quickly though...

The stock 3 pinion planetary is weak and the clutch surface area is just to small to last long with real power. Maybe in a very light car, but not in a heavy one. I've got a built glide now and also have a th400 that I'm thinking of building...