727 or 904?

RustyRatRod said

All this talk about the 727 exploding drum, while true is really over blown. ALL you need to do is do your burnout starting in first, REMAIN in the bleach box and KEEP SPINNING shifting into second. Problem solved. You'll never explode a drum with a stone stock 727.

Pretty simple.

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I have a friend at my local track who runs a 904 with a griner brake without low band apply. Car does wicked wheelies on launch.
He always does his burnout in Second gear just like is advised.
He broke the sprague this summer. By his own diagnosis it failed from losing and regaining traction on a slippery track while still in first gear. If that happened to a 727 it would over speed the drum and explode.
Talk to Paul Forte at Turbo action or John Cope and they will tell you the same thing. You only have to see these explosions once to know that it is not worth the risk. You need an aftermarket drum and a better sprague to be safe. You cannot control track conditions.
The major trans builders will never advise you to start your burnout in first with a torqueflite. People do it and get away with it, but it is not advised. Second or third only. Low band apply. IMHO.