WRONG! That was a THM375, produced by Detroit Transmission Divison, later the HydraMatic Division of GM.
WRONG AGAIN! '68 Camaros came with PowerSlide as standard and didn't get the THM350 (built by Chevrolet in their own plant) until 1969...AS AN OPTION.
Obviously not having my head up my ass, as you have been for years.
Bullshit.
CHILTON? BWAAAAAAAAAAAHAHAHAHAHAHAHA! Even a Haynes manual's better than those old Chilton pieces of crap! Only one reason to have ANY Chilton manual, especially from back then...as kindling for your fireplace. I had that exact shop manual back when it was new. I found more errors in it than ANY other publication at the time, and never bought another Chilton manual for anything. Now, if you'd care to look at a better manual, like the FSM or a Motor manual, you'd see that the Buick and Olds used the THM375. THE TWO ARE NOT THE SAME BOX...IDIOT! Just TRY to swap out a THM375 with a THM350, or try to use a 350 kit in a 375...see what happens.
You'll see...you've been made the village idiot once again.