Trans shield

I do my B-O's in second also. But sometimes in 1st and 2nd, I haven't ever had a problem with that Billet drum? Can't say I have ether, although those I have seen don't talk to much on their way to a hospital. Seriously though the billet drum I think has a spread of 16k to 18k rpm. So at launch it may see this rpm if you run a high stall converter. It's hard to calculate because people are still holding down the gas peddel when it goes off. People can not react fast enough to stop it. When it breaks it spins the drum 2:45 (first gear ratio) times the rpm it blew at. Stock drums are usually good to 10-12k, so if yours blew out at launch with a 5500 rpm converter it spun to at least 13,475 rpm. Now with our slow reaction times or a even higher converter it can get way out hand very fast. As a mater of fact I had a response from a guy with a hemi roadrunner. He said he blew one of these up. He was rewarded with looseing half a foot. It also went through a carbon fiber ^&* shield before hitting him.