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Username Post: 57 Powerglide: rebuild or replace        (Topic#357889)
Beltfed 
Poster
Posts: 43

Reg: 10-04-18
08-31-19 09:01 AM - Post#2774563    

I’m at a cross roads and know not which path to take. The original tranny (Powerglide) has 90,000 miles on it. Every shaft wobbles and it’s leaking at every seal.
I have a fresh turbo 350 but lack the proper adapter bell housing.
My questions are: Which path in your opinion should I take. Rebuild the Powerglide or convert to the turbo 350? And if it comes to it, does any one know what parts are necessary to do the conversion, and where to get them?
Money is always a factor, but getting it right is more important.
1957 283c.i. Original
Thanks for your time.



Edited by Beltfed on 08-31-19 09:03 AM. Reason for edit: No reason given.

 


george88gta 
"16th Year" Silver Supporting Member
Posts: 1988
george88gta
Loc: new york
Reg: 04-23-03
08-31-19 09:25 AM - Post#2774565    
    In response to Beltfed

Chat with Ecklers or Danchuk. They make conversion kits to install the TH350 in a 57.



Edited by george88gta on 08-31-19 09:26 AM. Reason for edit: No reason given.

 
56sedandelivery 
Dedicated Member
Posts: 5687
56sedandelivery
Age: 68
Loc: Everett, Wa.
Reg: 02-26-08
08-31-19 10:50 AM - Post#2774573    
    In response to george88gta

Your 57 block will have the provision for a block mounted starter motor; you won't need an "adapter". 57 was the first year for the blocks being machined for a block mounted starter motor, BUT, that feature was only actually used with the optional Turboglide transmission. All the rest, Powerglides and manual transmissions, used a bell-housing mounted starter motor. Now you only need to figure out how you want to mount that TH-350 transmission; use the conversion bellhousing mount kit, a rear cross-member, or both.
I am Butch/56sedandelivery.




Edited by 56sedandelivery on 08-31-19 08:54 PM. Reason for edit: No reason given.

 
Mel Foye 
*VIP* Founding Member
Posts: 4905
Mel Foye
Reg: 09-29-00
08-31-19 01:46 PM - Post#2774582    
    In response to Beltfed

The first time you drive it with a 350 you will wish you did it 90,000 miles ago.



 
george88gta 
"16th Year" Silver Supporting Member
Posts: 1988
george88gta
Loc: new york
Reg: 04-23-03
09-01-19 12:59 PM - Post#2774628    
    In response to Mel Foye

You know, just as a thought, have you considered a TH200R4? Basically the same mechanical issues, a vacumn switch and you have a 4 speed. That is the route I was going to take with my LS powered 55 ragtop until health issues forced me out of the game.



 
Beltfed 
Poster
Posts: 43

Reg: 10-04-18
09-01-19 01:05 PM - Post#2774630    
    In response to Mel Foye

Thanks for the input guys. I now know which path to take. ,I will contact people with more knowledge about this than I. I have always build pre-WWII cars so auto trannys are new to me.
Building back to original can be quite a challenge vs building a hot rod. Looks like this car is going to be a little of both.



 
george88gta 
"16th Year" Silver Supporting Member
Posts: 1988
george88gta
Loc: new york
Reg: 04-23-03
09-01-19 01:12 PM - Post#2774631    
    In response to Beltfed

We call that a resto-mod. Great old style looks and some modern and safer underpinnings.



 
Beltfed 
Poster
Posts: 43

Reg: 10-04-18
09-02-19 08:34 AM - Post#2774671    
    In response to george88gta

I will take a look at the TH200R4. Reason....I dug the th350 from storage only to find a BOP 350. I got it with the my first old car, a 1928 Dodge with a 300 c.i. pre nailhead Buick engine.
I am familiar with restomods, having built several over the years. My current one is a 1939 Packard coupe. I cut the frame about 8” in front of the firewall and installed a c4 Corvette front end. Performance 350, Camaro read end, th350, big and littles for attitude, etc.
Thanks.



 
Mel Foye 
*VIP* Founding Member
Posts: 4905
Mel Foye
Reg: 09-29-00
09-02-19 01:36 PM - Post#2774680    
    In response to Beltfed

I suggested the good 350 you had over a rebuilt PG.
While I am a big fan of the 200, your having a 350 AND your low annual mileage AND a low amount of torque to pull a OD if you now have a low number rear end equals a 350 over a PG to me.
Up front I see the 200 costing more especially if you need to change the rear end.
Probably a distant plus but a 57 for sale will likely bring more $$ with an OD.
From my view any automatic will be better than a PG. Here is to getting the results you want. Mel




 


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