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SignUp Now!When I was running a 34 element, I would get one or two passes out of it. Happened 3 times in a row. Manual VB, conservative line pressure, 3300 lb car.What type of lifespan are users obtaining with this part?What et and valve body?
How heavy are the cars? Are they big tire cars? Slicks? Drag radials? Coming into the power gradually (turbo) or n/a? What sort of converter config? Anything that will help absorb some of the shock load of the shift will help that sprag live longer.I dont like it above 750 /600lbs ft in a street car with fixed line.Strange thing is I have a few customers in the 9.3 to 8.8 range running them w/ a 2.10 first gear and they live.With the 2.10 the anti rotation of the direct drum is higher so its spinning at a higher rpm when shifted at the same rpm and they live.What are your thoughts on that Don?
Do you know if they're using any sort of torque management during the shifts? Some ECMs have an option to pull timing at the shifts.They are all @ 3200 plus.
Probably close to what I was running. My engine could only twist 2400 rpm out of it without boost and nitrous.No torque management.The turbo car and the procharged set up are both running tight neal chance bolt togethers.2800 to 3000.
You forgot to cross your fingers and knock on wood.8.40's-8.50's 3400lbs+ over 100 passes 34 element sprag. Havent touched the trans.
You forgot to cross your fingers and knock on wood.
There was a time in my development where I was using a 34 element for quite awhile. I don't remember what the change was with my combination back then that made the difference, but whatever it was, all of a sudden the 34 element sprag didn't like it at all. One to two passes and it was out for the count.
The direct drum was stabilized, also.
Dont know about. Just know its been working flawless.
Always runs flawless,... up until the run that you need it most.
I wouldn't complain, either. I wouldn't change a thing until you have to. Why spend the extra big bucks for the huge gain in intermediate torque capacity that you most likely will never use. I did the same thing. As long as the 34 element was doing it for me, why fork out the big bucks. As performance stepped up for me, I had to make a choice, either step back in performance to a level where the 34 will live, or move forward with the project and put something in the trans where I won't have to give a second thought as to whether this will be the run that it flips or not. Changing out complete direct drum and intermediate sprag assemblies 3 times within a span of 4-6 passes wasn't floating my boat. It's kinda like getting away with the stock driveshaft as your project moves forward in performance levels and finally installing the right driveshaft and u-joints and feeling relief that you've got the right part in there and don't have to worry about it.Hasnt let me down in 100 plus passes. I cant complain.![]()