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Post Info TOPIC: Need information about GM 4 speed crossmember for my 1963 Parisienne.


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Need information about GM 4 speed crossmember for my 1963 Parisienne.


Starting to gather up information and parts in switching my Powerglide to 4 speed.

I have a transmission available for my Pontiac, a M21........

What crossmember should I look for this transmission?

-G

 



-- Edited by Greaser on Sunday 12th of November 2017 10:19:44 AM

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A Poncho Legend!

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might be the same as a 63 Impala . 

 

http://www.southeastchevyparts.com/Finally-Proven-Steps-to-Convert-Your-Chevy-Into-a-4-speed-_b_50.html



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From Pontiac 1962-71 Parts Catalogue....

....if you are talking about the crossmember itself, seem they are all the same...

# 15: engine rear mounting crossmember: Group 4.081.....

 

Trans  Crossmember-01.jpg

Trans  Crossmember-02.jpg



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A Poncho Legend!

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Yes, as far as I've seen, switching Powerglide to Muncie requires no crossmember change in anything. Same mounting point, same driveshaft length. Only thing is, check your yoke on the powerglide. When I did my nephew's 63 Acadian engine/trans swap, the yoke was wrong number of splines for the Muncie. Right diameter, wrong splines. Later powerglides, I think 64 or 65 and up use a Muncie yoke.

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1966 Strato Chief 2 door sedan 283 "survivor"


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Also, don't forget to put in the pilot bushing! Yes, it's been done, but that is one mistake I haven't made. Yet.......................!

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1966 Strato Chief 2 door sedan 283 "survivor"


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The powerglide and manual transmissions all use the same stock transmission mount, unless you go to a 5 speed. Muncie, T10, super T10 and Saginaw 4 speeds, plus all the old 3 speeds use the same mount.

The powerglide front driveshaft length is different than the 4 speeds. You will need the shorten it and rebalance it, make sure the orientation of the yokes remains the same- take pics before you get it shortened and get it put back together the same orientation as factory. A heavy truck shop will do this for you, they do them all the time.

What bellhousing do you have?

 

I've done a 59, a 62, and a 63 to a 4 speed.



-- Edited by DonSSDD on Monday 13th of November 2017 05:32:12 AM

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63 Pariesienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.

Mahone Bay, NS Still not old enough to need an automatic



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DonSSDD wrote:



The powerglide front driveshaft length is different than the 4 speeds. You will need the shorten it and rebalance it, make sure the orientation of the yokes remains the same- take pics before you get it shortened and get it put back together the same orientation as factory.



-- Edited by DonSSDD on Monday 13th of November 2017 05:32:12 AM



I constantly learn new stuff here! I wonder why they did that on full size. On Acadians it's the same.

That's not an iron powerglide in 63 is it? I was sure those ended earlier.

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1966 Strato Chief 2 door sedan 283 "survivor"


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Thanks Don,Carl and  Pierre for all the information...much appreciated.

At the moment I don't have a bell housing , but will be looking for one from a 64  since I read that 63 is a stand alone set-up.

Like I said I'm just starting to gather information and parts...the M21 is my first part.

Thanks Carl for the link to the 63 Chev conversion...great article. I'm hoping to make my conversion to be similar

with the whole thing to look stock, including the shifter. Hopefully by late spring I'll have gathered everything I need 

and will begin the conversion.



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Carl Stevenson wrote:

Yes, as far as I've seen, switching Powerglide to Muncie requires no crossmember change in anything. Same mounting point, same driveshaft length. Only thing is, check your yoke on the powerglide. When I did my nephew's 63 Acadian engine/trans swap, the yoke was wrong number of splines for the Muncie. Right diameter, wrong splines. Later powerglides, I think 64 or 65 and up use a Muncie yoke.





Interesting, the conversion web site for the 63 Impala shows that it has an external cooler. I had always though any aluminum powerglide with an external cooler was the same length as 3 or 4 speed manual, or a short output shaft TH350. (On my 66 Grande Parisienne, I pulled out the glide and put in a Muncie.) I figured when you said the 63 is the wrong length, I assumed it couldn't be aluminum.

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The transmissions for 63 small blocks and 6's had a 63 only smaller input shaft mount, so a smaller hole in the BH. 63 was the first year for the enclosed aluminum bell housing as well. You could use an older cast iron open bottom unit, not correct but cheap and easy. You will find some later truck BH's, some have a bigger input shaft hole, you don't want one of those as you'd need to shim them.

The ironglide was replaced by the aluminum glide in all 63's, and the 62 327's had them. The ironglide had a "spacer" mounted to the block and the transmission bolted to the spacer.

If you go here, they have some posts at the top for transmission lengths and driveshaft lengths for x frames.

www.chevytalk.org/fusionbb/showforum.php

Good advice Carl on the pilot bushing and yoke.

Greaser, I have a theory that any complete set of x frame z bar and rods will fit any engine setup, the only difference is the rod through the firewall, for a 63 you need either a 63 or 64 only, Cdn Pontiac or Chev. The other difference is the clutch fork, some have a "push pin", some have a bolt type. The forks also have different bends in some years.

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63 Pariesienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.

Mahone Bay, NS Still not old enough to need an automatic

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