i decided to hammer it down got my car running today and got the replacement dipstick i was about 75 and about 80 it wanted to shift and it like stalled a little i know i have a busted transmission mound will that cause it like it was wanting to but couldnt! it did shift though i mean it took more time i know if i stomp it at 30 it pops the center consol up so i nkow its a busted mount forsure just wanting to see about the other 80mph though

 

Popping @ 30 and @80 with the LT1's torque will do that for you. What you heard at 80 should be your trans mount. Don't buy a cheap one at your local parts store, and don't be hammering it anymore with it broken. Get one from Energy Suspension. The torque, when you stomp on it, will create good amounts of stress on the universal joints on your driveshaft and you could eventually hurt something in your trans. So, Get an ES mount and hammer all you want, without it, take it easy, before you end up having to pay for something that you would have rather never needed to. Take it easy and get it fixed soon. Laters