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Very unlikely. A quick test would be to disconnect and plug the line from the vacuum advance and go for a test drive to see if you notice any difference. I've driven TH350-equipped vehicles with vacuum leaks and the transmission's been unaffected... FWIW, I like Accel's adjustable vacuum advance. Brad O. David wrote: > the vacuum canister that i am talkin about is the one that advances ur > timing on ur distributer > > Hi i got a 70 chevelle with a 350 and 350 tranny. I just did a tune up on > it and i found out that my vaccum canister is out. Would this have > anything to do with my tranny not shiftin from 2 to 3rd? Please help and if this ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]

