SOURCE: I want to replace powerglide with turbohydro in 66 chevy 327 impa
You can install a TH-350 pretty much bolts right in. However, you have to be careful with the tailshaft length. Both the 350 and the powerglides had long and short length tailshafts. In other words, if its the wrong length, the drive shaft wont fit.
You can also install a turbo 400, 700R4, and numerous other newer transmissions with overdrive too, but they will require electronics to make them shift wihtout a computer, and different cross members.
-FW
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a 327 engine on a 1967 chevy impala, how much colant and how much water
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