My 727 has a 5 pinion steel front planetary, billet steel drum, Non-LBA TA transbrake, bolt in sprag, and a deep pan. Been 8.90s at 150+ mph at nearly 3900 lbs. Been using this one since 2009.
I ran the same setup w/ no transbrake for 2 years (running 9.50s at 140 mph) before the stock drum blew up. Swept up the trans off the track and put it in a bucket that night.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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