TRANSMISSIONS!!

[1987cp]

It was used in g bodies in general, not just GNs.

Quite; were they really that prone to failing even behind unblown 3.8L engines?

[P72Ford]

I think the 200 R4 was generally pretty good. I have the one that came out of the Monte Carlo; it lived 135K miles behind the 3.8. It still drove fine when we removed it.

Anything that gets beat on, or that it is not maintained is more prone to failure.

As far as C4s go; my Dad put 3 of them in his '68 Falcon, in 100,000 miles. It had a 200 straight 6 in it, so it wasn't like the C4 wasn't up to the task. That car used to crap the C4s right out, though. They'd lose a gear or so, and then that was it.

[RunUoveR]

no i think the 700 R4 was the overdrive 1980's trans. its a popular trans swap for sbc/GM hot rodders and stuff like the AOD is behind ford motors. i think a better-built version was standard issue in the GN's

the 700R4 eventually eveloved into the 4L60E which was basically an electronic, computer controlled version of the same trans for the 90's

the 200 R4 is the shitty one, but if you ask me theyre both shitty in stock form. then again most were built for 120hp 305 v8s at best.

[gadget73]

The 200R4 was the overdrive trans in the Monte SS, the Grand National, and other cars. The non-OD one was the TH200c, thats probably the turd tranny you're thinking of. The 700R4 is bigger, usually used in trucks and it did become the 4L60 and 4L60E later in life. Same sort of evolution with the AOD > AODE > 4R70w.

The nuked C4 story is one I've heard before, similar conditions too. The one person I know who went through several did so in an early 80s LTD with a 200 I6. I know someone else who cooked 2 of them in a dead stock 302 F150 by towing people. He gave up and put a C6 in the truck and had no more problems.

I myself have only had one trans fail, and it was a GM unit. The planetary set in my 4L60E snapped while backing out of my driveway. I drove it until it wouldn't go because I just didn't have money for a trans rebuild. I did burn up an AOD, but that was in a fire. It didn't fail on its own so I can't really count that.

[1987cp]

A Fox body with a six-banger killed several C4s? I wonder what the circumstances were, and how the transmission were built, with what servos, etc.

[gadget73]

Not enough trans cooler apparently. LAst I talked to him, he had added an external cooler and the problem was resolved. He does live in Arizona, and I guess the constant heat was just baking them to death. These were quite probably used, or the cheapest rebuild he could find since he's broke. Heat really tears up a transmission too.

[82LTDQS]

I have decided. Im going to weld a long drive shaft from the engine to teh rear end. I will use the starter to take off.

[gadget73]

Better change that cam out for some more torque

[82LTDQS]

Will do.

[70torino429]

I have decided. Im going to weld a long drive shaft from the engine to teh rear end. I will use the starter to take off.

your kidding right? if not, you must post a video of this.

[1987cp]

I'm thinking such a machine wouldn't actually drive. :p

[82LTDQS]

i will use two starters then and a few more batterys. It will be like a hybrid

[P72Ford]

Sprint cars are a direct drive, with just a simple in/out 'transmission'. They get pushed to start.

[Lincolnmania]

fmx

[gadget73]

Marine applications use something like this, but they have a forward/neutral/reverse transmission. No shifting or anything. Some are 1:1 ratio, some have a reduction depending on application. You could use one of those if you really wanted to, but it would suck badly.