KQuinn

im lost on this thing. i purchased a new turbo action cheetah valve body and built a th350 and installed it. as soon as you start the vehicle and put it in reverse it will rock a little then nothing all other gears seem to be fine. i have had this trans out multiple time i even took and good working trans installed the vb on to it and it burns the reverse input clutch. i have installed like three of these valve body and never had problems. i have also built many transmissions from powerglide to six speeds, but i am no expert thats why im asking for some help.

starbucks

Do you have a transbrake? Mine did this because I didn't know you needed to press the transbrake switch when in reverse or nuetral

KQuinn

it does not have a trans brake