c-6 high performance art carr built.

[cathynkeith]

I will call art carr tomorrow, but thought I would see what you guys thought.

When driving my 69, if I leave it and drive and floor it, it hits the rev limiter 6k rpm and does not shift until I let up on the gas.

If I manual shift, It will shift fine. Since I have a 7200 rpm redline engine and the trans was built for the engine maybe its looking for 7k rpm to shift?

Another problem is the 2800 rpm stall converter, trans gets too hot around town, burnt the royal purple in 2 hours of driving, thought I lost reverse but after it cooled it now works, hope there is not much damage. I am going to ask art carr about a lower stall tomorrow.

[cathynkeith]

forgot, this trans has a modgulator on it that has a screw where the vacuume hose would be. Guess its adjustable?

[MadMaxetc]

Thats the setup I was looking at.

I am curious as well.

(sorry, no help )

[Jake11]

xxx

[cathynkeith]

Like to help ya but I don't know what they did when they built it.
I'm an old guy that has built a few C6's. A high stall converter will
heat up the fluid. Gotta get a good cooler to add on to the stock
setup. A temp guage would be a good idea. If it gets over 300 it starts
cookin itself to death. 200 and under is better for the trans. If it got
hot, change the fluid. Does it smell bad? If in doubt change it. Once
it gets hot it breaks down and no good no more. Good luck, KeithP

cooler is built into griffen custom radiator, huge 2 core, 1.5" cores with dual elec fans.

yea fluid is burnt, just read on art carr web site not to use synthetic fluid....oops...

[Jake11]

xxx

[Jake11]

[pat67shorty]

Like to help ya but I don't know what they did when they built it.
I'm an old guy that has built a few C6's. A high stall converter will
heat up the fluid. Gotta get a good cooler to add on to the stock
setup. A temp guage would be a good idea. If it gets over 300 it starts
cookin itself to death. 200 and under is better for the trans. If it got
hot, change the fluid. Does it smell bad? If in doubt change it. Once
it gets hot it breaks down and no good no more. Good luck, KeithP

cooler is built into griffen custom radiator, huge 2 core, 1.5" cores with dual elec fans.

yea fluid is burnt, just read on art carr web site not to use synthetic fluid....oops...

That's not enough. you HAVE to run an external cooler in front of the radiator with a stall converter.

Not wanting to shift sounds like a governor issue.

[averagef250]

Liquid-liquid coolers are pretty efficient, but the cooler in your radiator is not enough. The bottom of the radiator is probably 150-160 degrees trying to cool 300 degree ATF down to 200. A big air-liquid cooler will help a bunch. I don't even run the radiator coolers at all. Just a big external one. I bought a pallet load of surplus high efficiency hydraulic oil coolers a lfew years ago. They will keep any high stall auto cool on the street and are about 10"X24"X2" and hold a quart. The one in your radiator probably holds 1/2 a cup.

[DuckRyder]

I agree with that high of a stall got to have an external cooler (the bigger the better and one with its own fan wouldn't even hurt).

If the modulator has a screw in the middle it is adjustable, it would be worth a try.

Wonder if it has a manual valve body?

Isn't art carr the one that sold the company and art carr isn't really Art any more? Art has "Carr transmission" or something like that?

[68F250]

Yes, I had an original Art Carr C6 back in the '70s, here's where he's at now:

http://www.cpttransmission.com/

Kinda similar to what happened to Doug Thorley of Doug Thorley headers.

[cathynkeith]

Well according to art carr or whover it is now, they do not believe I hurt it, they said that the modgulator is not adjustabe that too remove the scres and hood up vacumme, change the fluid and let her go. so hopefully that will be it.