Modified the primary weights to have a "window" like GM did for Corvettes with 700R4 transmissions. This was a removal of about 20% if the weight.
Windowed weight and a B&M kit.
Installed for testing, I found the effect to be very small. If anything it may make the light throttle shifts later. Hardly noticeable..... real changes need to be made with secondary weights and springs.
Hi, As you found out, the weights make little difference. Its the springs that make the difference. (the springs can be trimmed to get whatever shift points you want). I have T400's and 700R4's shifting at 6000 and 7000 rpm's (in drive) Just takes a little time.
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