Coan turbo 350 XLT

[buzzinhalfdozen]

Anyone running the Coan turbo 350 Xlt?

[Ed Wright]

Originally Posted by buzzinhalfdozen

Anyone running the Coan turbo 350 Xlt?

I believe Pete Peery does, in his SS/GT car. He likes it.

[buzzinhalfdozen]

Yes that's what I have. Have you had any issues with tearing up the clutches? I have damaged the intermediate clutches twice now hoping the latest fix is the cure. About 30 runs and it needs clutches. Joe

[buzzinhalfdozen]

Yeah you're less than half the weight of mine. Yes I run the "special" fluid, I may try regular F type if I keep having to change it, don't want to break the bank on trans fluid.I guess I'd better just hope for the best.I'm sure there's a cure for tis I'm just not sure what it is. Joe

[chevy620]

Amzoil Sure-Shift (maybe it's Super Shift?) fixed my burnt clutches on 1000 HP 'glide. It is not as slippery as straight synthetic and takes the heat better than standard F-type. The trans in dragster can hit 250 in late rounds.

We run it in our T-350 as well, 200 runs, zero issues in the 9.80 3200 lb car.

[Tom Turner]

I have one in Fred, my 71 Corvette stocker. Not a ton of runs yet (about 90) but no signs of any problems with fairly brutal use; .dead hook, 600ft lbs, 3600lb car. Ol' Fred tore up a couple of T-350's and a pretty good 400 before I bought this unit. Great so far. We use type F , TT

[Adger Smith]

I would guess that no one who runs a 350 and has posted here makes the shifts at as high an RPM as Joe. That might have something to do with it. I'm not up on 350's but isn't something stopped and then rotated at engine speed (or a multiple of) when one of the shifts is made? Joe, are you sure the clutch pack is clearanced correctly. Maybe it is Trying to apply before something else releases or it is staying applied when it shouldn't be. Shift timing can be tricky. I know one other V-6 racer that tried the 350 and had problems. According to him his 2.24 ratio 350 wasn't any quicker than his 1.98 P/G.
good luck hope you get it working.

[buzzinhalfdozen]

Yes Adger the shift RPM is quite high,I'm trying running 3 intermediate clutches this time with a different friction material. 2 frictions just didn't seem to cut it in my application. As for the shift timing it appears to be OK, as I see nothing on my Dataloggers accelerometer to indicate a conflict of the clutches. Joe

[Mike Taylor 3601]

On 1-2 shift intermediate drum has to swap directions,thats why supposed to start burnout in 2nd
and not shift from high to neutral (rev. pattern) at any speed besides stopped.that is what destroys
intermediate sprags on th 350 rev. pattern.
Mike Taylor3601

[chevy620]

Originally Posted by Mike Taylor 3601

On 1-2 shift intermediate drum has to swap directions,thats why supposed to start burnout in 2nd
and not shift from high to neutral (rev. pattern) at any speed besides stopped.that is what destroys
intermediate sprags on th 350 rev. pattern.
Mike Taylor3601

We have a reverse pattern 350 in our bracket car. I am dropping it into neutral when I get the speed slowed down to 60-70 mph.... this is NOT a good idea then? It seems to go right through to neutral.