How about a good Drag race 904 build discussion
I ordered the new tf904 multi element roller clutch today from ati transmission.
According to there tech tips in the product manual, for every pound of rotating weight removed from a transmission results in 7 more horsepower at the rear wheels.
According to ati the new roller clutch was developed for the new drag pack challengers when they came out. It was determined that the target performance of about 10.50 second et in these cars was the performance level that the stock 10 roller clutch would become problematic.
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The clutch was developed by ati with the blessings of chrysler. Ati fulfilled the drag pack challenger orders for chrysler and then made the clutch available to the general racing public by special order only. I had to authorize payment up front and the order will take two weeks to fulfill. I have seen a few torqueflite explosions over the years and Safety and reliability are important in racing. I feel that using this new roller clutch with an aluminum or billet steel front drum should all but eliminate the possibility of failure, especially with foot brake racing with a valve body that does not apply the band in 1st gear.
Duane