I have a turbo 350 trans. I am not sure of what was done inside but i know the trans has been upgraded and has shift kit. The trans was behind a mild built 454. I recently purchaed a 482 big block racing engine for my 67 chevelle. The trans seemed to work excellant behind the 454. I was thinking of bolting this trans up to my 482 and trying it out. The trans has a vacuum modulator still installed and i know this new motor will never produce enough vacuum for this unit. (482 BB, 14.5-1 Comp. 714 rollercam). My question is, do I need to hook-up the vacuum modulator or can I plug the modulator and manual shift the trans at all times? Will this hurt the trans by doing this?
Thanks for any help.
Barry Miller

Run the vacuum modulator still. The engine will produce some vacuum while driving it.

Dave