Can anyone tell me what needs to be changed to go from 3 speed manual trans to powerglide trans? Will the drive shaft still work with the powerglide trans?
Can anyone tell me what needs to be changed to go from 3 speed manual trans to powerglide trans? Will the drive shaft still work with the powerglide trans?
Hi and welcome to the forum.
Your driveshaft will work. The bellhousing/3speed is the same overall length as power glide, th350 short, and 200-4r, so you don't have to shorten the driveshaft when swapping in any of the aforementioned transmissions. All those automatics have 27 spline outputs. If you have the early sm-318 muncie 3 speed ('64-early '65), then I think those have a 16 spline output, so you'll have to change the yoke at the front of your driveshaft to match the 27 spline of the power glide. IIRC, the early non-synchro'd 3 speed muncie 318 transmissions had different 16 spline count on the output. If you have a late '65 or later van, you most likely have the saginaw 3 speed, which IIRC all had the 27 spline output. So in that event, the driveshaft and yoke should be the same on the 'glide.
What year van are you working on?
64' wikivan 230/4 onda tree/2.56 posi
'64 Red Baron no engine/trans
'66 "Lucky" 230/3 onda tree/project
Originally Posted by Vanner68
Welcome aboard.
108VanGuy...
1969 Chevy Panel, 250 CID, 3 ring 4 Spd. with OD, 2.73 "WedgieVan" Daily Driver
1967 Chevy Panel, 230 CID, 3 Spd. 3.36 "UtiliVan Owned since 76
1964 GMC Panel, 194 CID, 3 Spd. "CrunchoVan"
1965 Chevy Panel 350 CID, 3 Spd. "RustoRoof" Runs but wiring bad
1969 Chevy 108 Display 307 CID THM 350 Power Brakes 3.73 Posi
1965 Chevy Panel, V8, 3 Spd. "Gold Hills Van"
1965 CamperVan, V8, 3 Spd.
1969 G20 Shell
If you are interested i have a powerglide transmission that has the correct tailshaft that will fit your 65 van, it came out of my 65 g10 van and is in good condition, i live in the Harrisburg Pa area
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