when ive got alot of torque on it like 3500 to 4500 rpm the motor will rev up but i dont seem to be moving as fast as i used to, and when im at wide open throttle the power starts surging almost like a rev limiter, kinda like its slipping and hooking up, slipping and hooking thanks!

ps. luckliy i have an extra trans laying around from a previous z28 ,if i haft to put it in what seals do i need to replace so i dont have to pull it again just to replace seals?