High Stall TC & Tranny Durability....
11-27-2004, 11:01 PM
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cooler and shiftkit are reccomended. with those and tuning i would say the durability should be close to stock. just a verter and your asking for trouble- they create ALOT of heat. especially since you are not going to waste your $ on anything under a 3500 stall speed 
11-28-2004, 04:31 PM
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I believe you would see (say) ~90% efficiency under
higher slips (the ~3000RPM are considered "mild" and
have reasonable peak efficiencies but when you slip
you are not too efficient.).
So call it a 10% loss. 10% of 300HP flywheel output
(just by way of example, no disrespect intended
)
would be 30HP or about 20kW of heat to the fluid.
Mmmmm.... toasty.
Fortunately it's rare that you'd sustain that kind of
output for long, in a high slip regime. But you'd like to
be shed of that heat by the next episode, for sure.
higher slips (the ~3000RPM are considered "mild" and
have reasonable peak efficiencies but when you slip
you are not too efficient.).
So call it a 10% loss. 10% of 300HP flywheel output
(just by way of example, no disrespect intended
)would be 30HP or about 20kW of heat to the fluid.
Mmmmm.... toasty.
Fortunately it's rare that you'd sustain that kind of
output for long, in a high slip regime. But you'd like to
be shed of that heat by the next episode, for sure.
11-28-2004, 10:10 PM
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I have over 115K on my Z28, with a 3500 stall since 4XK mile with no problems. I have a 25000 GVW B&M cooler that I run post-radiator in the summer and pre-radiator in the winter.
