1- piece Driveshaft for '70 Cutlass 4-speed

Old May 17th, 2019, 09:44 AM
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1- piece Driveshaft for '70 Cutlass 4-speed

I need a 1-piece 4-speed shaft that measures 56-1/2" from the center of the u-joint hole to the opposite center u-joint hole, not end to end. I've sent emails and texts to everyone I could think of who might have one, and they've come back negative. Anyone? It doesn't have to be perfect, but it would be nice if it was ready to drop in. If anyone is looking for a 1-piece that measures 55" from center to center, repainted and ready to install, I've got that. I also have a 2-piece 55" in great shape that's ready to drop in anywhere. But I need 56-1/2! Let me know what you have!!
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Old May 17th, 2019, 11:15 AM
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Try The partsplaceinc.com that is were I got mine
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Old May 17th, 2019, 11:16 AM
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lol, I literally just scrapped around 30 driveshafts and I know for sure there were at least 5 that length. I saved 5 random ones from that stack, I will see what length they are. Hopefully one I saved was that length.
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Old May 17th, 2019, 11:47 AM
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HEY BOB

Have you looked into buying a longer yoke?? The you could use the driveshaft you already have

https://www.summitracing.com/search/...le/spicer-1310

Last edited by 11971four4two; May 17th, 2019 at 11:50 AM.
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Old May 17th, 2019, 12:22 PM
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Originally Posted by 11971four4two View Post
HEY BOB

Have you looked into buying a longer yoke?? The you could use the driveshaft you already have

https://www.summitracing.com/search/...le/spicer-1310
Hmmm - no, never thought of that. It makes sense... I guess every yoke is the same width to accept the u-joints. How deep into the trans are the yokes supposed to go? That would give me an exact measurement to look for.
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Old May 17th, 2019, 12:25 PM
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Originally Posted by jensenracing77 View Post
lol, I literally just scrapped around 30 driveshafts and I know for sure there were at least 5 that length. I saved 5 random ones from that stack, I will see what length they are. Hopefully one I saved was that length.
Of course...lol I was going to post for one a couple weeks ago, but thought I had the right one shipping to me based on pictures from the seller. Turned out to be wrong as well. I'll wait to hear before looking more seriously into using a longer yoke.
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Old May 17th, 2019, 12:45 PM
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Originally Posted by BSiegPaint View Post
Hmmm - no, never thought of that. It makes sense... I guess every yoke is the same width to accept the u-joints. How deep into the trans are the yokes supposed to go? That would give me an exact measurement to look for.
https://www.hotrod.com/articles/how-...th-driveshaft/

Article quotes
CC: How much should the front yoke of a driveshaft engage the output shaft of the transmission?
DD: The slip yoke should be able to go into the tailshaft of the transmission so the barrel is fully inside the seal. Then, pull out the yoke 1 inch. This is the correct amount of spline contact for the slip yoke.
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Old May 17th, 2019, 01:01 PM
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Originally Posted by 11971four4two View Post
https://www.hotrod.com/articles/how-...th-driveshaft/

Article quotes
CC: How much should the front yoke of a driveshaft engage the output shaft of the transmission?
DD: The slip yoke should be able to go into the tailshaft of the transmission so the barrel is fully inside the seal. Then, pull out the yoke 1 inch. This is the correct amount of spline contact for the slip yoke.
OK, so I should simply take the shaft measurement from my stock yoke and subtract an inch, and that's the proper depth into the trans. Then add the extra length I need for the shorter driveshaft, which is 1-1/2". That's the yoke length I need to buy. Thank you!
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Old May 17th, 2019, 01:42 PM
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I have one removed from a 70 cutlass 4-speed years ago. see pics below.

shipping won't be cheap.
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Old May 17th, 2019, 04:10 PM
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56 even are the ones I was thinking of. I do have one at 56 inches but not 56.5
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Old May 17th, 2019, 04:21 PM
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Originally Posted by jensenracing77 View Post
56 even are the ones I was thinking of. I do have one at 56 inches but not 56.5
I sure appreciate you taking a look for me - thank you!
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Old May 17th, 2019, 04:22 PM
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Lunaboy, I sent you a PM
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Old Yesterday, 01:20 PM
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I have two, one is like 56, and other about 56 1/4 or 3/8. I think the 56 is a Cutlass, and the other is a 442.
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Old Yesterday, 01:35 PM
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Originally Posted by 442Harv View Post
I have two, one is like 56, and other about 56 1/4 or 3/8. I think the 56 is a Cutlass, and the other is a 442.
Harv, if you would check the one that is longer than 56, it would be appreciated. There are 56's for sure, but only one 56-1/2. So many different combos for the different transmission, engine, and rear ends....
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Old Yesterday, 02:09 PM
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Went and checked again. I would have to say, that they both are 56. One is bigger around, so I thought it was the 442 one. Also the bigger one has Spicer U joints, and the other one Sagnaw joints.
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Old Yesterday, 04:40 PM
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Originally Posted by 442Harv View Post
Went and checked again. I would have to say, that they both are 56. One is bigger around, so I thought it was the 442 one. Also the bigger one has Spicer U joints, and the other one Sagnaw joints.
I sure appreciate you looking for me!!!
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