Tranny explosion

There’s zero doubt that most of us were lucky.... some still dance with the devil. My first “enlightenment” was in the early 90s. Friends car launched and BOOM! the final autopsy was that the 8.75 broke first, shocked the sprag, and set up the chain of events we’ve all seen before. Does it happen EVERY time? No... In my early Mirada days, when a performance upgrade was finding a 3.91 chuck in the bone yard, I broke a couple gear sets. Not knowing any better we’d throw another set in and race on. My cousin met the same demise in Vegas at mats. Launched, 8.75 broke, shocked the sprag so hard it broke and cracked the case. Luckily the drum stayed intact.

We’ve run billet drums, blankets/shields on our 727s since that first experience. While it’s always a debate I feel the blanket, if made properly, is a better deterrent for containment. It’s ability to “absorb” the energy is greater over the “solid” CSR style shield imho. We run the CSR as it covers all aspects of the sub 10 sec rules, but on a 727 I’d prefer a blanket :).
904.... much smaller mass, it’ll stay together. Talked with Dave (Pro Trans) about this topic and he’d never seen one come apart either.