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Discussion Starter · #1 ·
Just bought a powerglide trans. Currently running 200-4r transmission on my grand national.

What all do I need to convert over to glide? Just the BOP adapter plate? how will that effect spacing on the converter? Are the output splines for the drive shaft the same? The glide has a standard turbo input shaft. so I assume I can use any turbo series converter. Will the flywheel converter bolt holes line up?

Thanks in advance...
 

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Saw your last posting on your other thread. God I hope you did'nt buy the cast iron Powerglide. I'm going to guess it's not cast iron, but aluminum. If so, your flexplate for the 200R4 should work, especially since it looks like you're going to be using a Turbo-Hydramatic converter in the Glide. The adapter "plate" goes on, so the COUNTERSUNK bolts go through it into the engine. Then, the trans bolts to the adapter. Some of the mounting bolts for the engine to trans may even line up, at least the lower ones close to the alignment dowels. You MAY have to space the converter back from the flexplate, depending on how thick the adapter is. "Seat" the converter in the trans/pump and pull it back 3/16 of an inch. With some adapters you get a converter centering sleeve that extends the centering bung on the converter. Now, how much space is there between the flexplate and the converter tabs? Space up that distance. Your slip yoke splines should be the same as your 200R4, unless you wound up with a course output spline Powerglide, then you'll have to swap yokes. Lenth should be the "same", as long as you've got a 28" long Glide. The trans crossmember may need to be moved, as the trans mount location is different between your two transmissions. There is a company, I forget the name, that makes conversions for shifters to adapt them to different transmissions; someone will post the name. Wire up the trans brake. That should be all there is.
 

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If you are making any kind of decent power, I'd pitch the adapter plate and just get a Super Bell or equivalent bellhousing for the PG. You cut off the PG bellhousing and the new bellhousing bolts on to the pump bolts. The Super Bells come with both Chevy and BOP bolt patterns.
 

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Discussion Starter · #4 ·
I ended up buying the glide and it was alum. Looks to be really nice, and take care of. I saw the car it was taken out of and it was very nice. Looked the part of a 10 second car with the 12 point cage and nitrous plates on a alum headed SBC. I'll take it to a friend of mine to look it over before installing.

Not making much power (500whp) and it's in a very light car at 2650 with the older heavy trans.

Buddy with a 9 second buick motor in a toyota truck is using a speedway adapter plate with no issues. So I'm sure strength isn't an issue.

Thanks All! :D
 
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