I'am switching my 1969 chevelle malibu from a powerglide to a turbo 350, Is the drive shaft the same length? It has 373 gears & I'am sure that I will have to change the speedometer gear in the tail shaft,Does the piece on the rear output shaft have to be changed? Also what is the proper speedometer gear to get?:hurray:

Driveshaft should work fine it did for me when I switched from PG to TH400

Mine is switched, 66 chevelleswitched to 350 350 th. Im thinking maby my yoke doesnt go into trans far enough.Any advice?:confused:

I replaced the PG in my '69 Malibu to a TH350. The tailhousing on a TH350 is slightly longer than the PG but the driveshaft will fit--barely. I had to have the rear axle resting on jackstands for normal ride height (front yoke goes into the trans the furthest) for the rear Ujoint to go into the yoke. Other than that you'll have to do some bending of the PG cooler lines and if you're using a column shifter, some cutting and welding of the linkage at the frame is required, or TH350 linkage parts. You can cut the PG steel vac modulator line and use a longer rubber hose to connect the line to the modulator. As far as speedo gears, the driven gears are the same as PG but the drive gear (and you'll probably need a different one with 3.73's) are different. Go to www.tciauto.com (http://www.tciauto.com) and find their speedo gear section to calculate what you need and find the gears to buy. The column shift indicator will be missing D2 but it doesn't really matter unless you're anal like me. I was lucky enough to find one to buy (thanks T-Man).