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  #1 (permalink)  
Old 09-29-2004, 09:05 PM
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Cast iron powerglide

Here's another question for all of you senior builder's I have a 1956 cast iron glide that i might use for spair part's to fix a 55 cast iron glide that is a leaker and i noticed that the 56 version has a vacume mod. screwed into the servo cover. It look's kinda like a th350 mod. Is this normal for a 56 model? I thought 58's were the first year for the mod. and they were an assy. bolted to the servo cover. This 56 model also has a case vent near the ext. hsg. in the case and seam's to have a longer oil fill tube and a sealed dipstick. As many of you know these cast iron glides suffer from burping and i was wondering if this 56 model was upgraded to fix the burping problem. Tk's sling

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Old 09-29-2004, 09:31 PM
stu stu is offline
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56 PG didn't have a modulator.
What are you calling a servo cover?
What is the length of the extension housing and how does it compare to your 55?
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Old 09-29-2004, 09:39 PM
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Hello stu, The servo cover is on the rt. side of the tran's and this 56 model has a vac. mod. that is screwed into this cover. It's unlike the 58 model's that have a vac. mod assy that bolt's to this servo cover. The lenght is the same as the 55 model. As far as i can tell the only difference between the 56 and the 56 is the vac. mod., dipstick, fill tube and the case vent
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Old 09-29-2004, 09:46 PM
stu stu is offline
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I don't know what you have but it doesn't sound Powerglidish.
Is that a word? Can I say that?
Any PG modulator screws in.
No extra bolt on's that i have ever seen.
Can you get a pic of it?
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Old 09-29-2004, 09:58 PM
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Hey stu. I'll have to scrape of all the grease and grime off it to take a picture, but i'll do it tomarrow and post the picture. The tran's is out of my dad's 56 belair 4 door hardtop. It had a 265 v-8, 4 barr. carter carb, with power packed head's. We scraped out the car in the early 70's and i kept the tran's so it's ben setting for 30 plus year's. c-ya sling
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Old 09-30-2004, 08:41 PM
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hey stu, i have 8 picture's of the 56 model glide for you. here is the first one. This picture is the 56 unit with the 55 extension housing beside it and the 55 servo cover. As you can see the 55 modle is shorter than the 56. I thought last night that they were the same lenght
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File Type: jpg cast iron glide (1956).jpg (22.4 KB, 194 views)
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Old 09-30-2004, 08:55 PM
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Hey Stu, Here's the 2nd picture of the 56 glide, Note the ext. Hsg, servo cover and the fill tube off the 55 unit laying beside the complete 56 unit
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Old 09-30-2004, 08:57 PM
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Hey stu, Here's picture 3. It's a view of the dipstick's. Note that the 56 unit is longer
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Old 09-30-2004, 08:59 PM
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Hey Stu, here's the 3rd pic. Another picture of the fill tubes
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Old 09-30-2004, 09:19 PM
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Hey stu, here's pic 5. Note the modge on the 56 unit

Hey stu. i'm going to have to cut the pictures down to only 5. The other 3 pictures are too big in file size to send on this post. if ya want i could send them to your e-mail addy. If ya want to see them send me a e-mail to slingslingbinks@msn.com and i'll send them to ya over my yahoo addy, witch is slingslingbinks@yahoo.com. Msn has a problem with sending pictures, but yahoo will send them out to you. I hope these pictures let ya know the diff. between a 55 and a 56 cast iron powerglide. in a nutshell the 56 is longer, has a case vent, a longer fill tube and a vac. modge. c-ya sling
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Old 09-30-2004, 09:33 PM
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I hate to disillusion you but that's a 1958-62 transmission.
Somebody did a switcheroo.
You will note on your 1955 the transmission mounts are on the front housing while the supposedly 1956 which is a 58-62 only has a mount at the back of the main case.
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Old 09-30-2004, 09:46 PM
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Hey stu. are ya sure it's a 58 to 62 Glide. it's for sure out of my dad's 56, my brother ran the same car for a few year's and he said that he never remembered it being replaced. And my dad passed away 2 week's ago so i can't ask him. It's not impossible that some one swaped it into the 56. or mabey it's ben too many year's and i picked it up else where. I'm not an expert on the cast iron glides, so i will take your word what it is. Do you know if the vent and the longer fill tube will take care of the burping problem? I know that with the different servo cover that's on the tran's that i have, i can see that the cases are also differnt than the 55 unit. It would be nice if there was a way to tell what year that ya have. Tk's sling
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Old 09-30-2004, 09:55 PM
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The tube and breather will help with the burping.
If you do put it in your 55 be ready for a big surprise.
The gears aren't where they should be.
The 55-57 had PNDLR.
The 58-62 had PRNDL.
Can you get a pic of the other side.
It will help me nail it down for you.
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Old 09-30-2004, 10:18 PM
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hey stu. I took the picture's but there size is too big to send over this forem. E-mail me and i'll send them to you. I do remember that the shift pattern changed in 58. Tk's sling
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