well i have a 2000 auto z that ran a 12.71 at 109, bolt ons

the tranny went out and i had a local shop rebuild it, beast shell, b @ M shift kit, line pressure on valve body up and on computer tuner line pressure up 6 lbs, along with tq man. delete, and let me tell ya the car shifted HARD, it would leave 6 foot posi marks during the 1-2 shift, and now i regret all i did.

it was about 10 months after the rebuilt and about 6,000 miles later when i was flogging on it and BAM during the 1-2 shift it made a noise as if the driveshaft broke,

the car has neutral, park and rev, thats it, no man. 1 or 2 when it did brake and the car was in 3 or 4 it felt notchy until i slowed down

i know its hard for you to tell me exactly what it is and i will tell you what it is after i tear it down, but some insight on what may have broke, i think this failure was mainly due to a hard shift setup and i may have tq man. put back on, also before the tranny broke it did notice that it felt as if the 2-3 shift was slipping when shifting at 6500(need more shift point tuning after gear install 2.73 to 3.73)

well i need to get around to removing the tranny and have found some nice rebuilds from the pro-built page

i would like the car to run 12.0 and be reliable(tranny wise) if there is a master kit i can buy for my application please send it my way

sorry for the long post

 

https://www.700r4l60e.com/store/prod...&cat=55&page=1

anything wrong with this kit?, my car may not see over 390 hp

 

Maybe Frank from CPT will chime in. I love my CPT transmisson.