We are rebuilding the drive train on my 1965 roadster and need the yoke that connects the Muncie M-21 transmission to the drive shaft. The old yoke is well worn. We are trying to eliminate as much vibration as posssible, since my 327 engine is built to rev to 7000 RPM. All the bearing and bushings in from the crank to the differential will be replaced, but we cannot find a good yoke. Any help out there? Thanks!
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Re: Transmission Yoke Search
Gerie,
Long Island Corvette Supply, Inc. sells
brand new GM yokes for $180.00
Don -
Re: Transmission Yoke Search
Don and Gerie-----
And, you can still obtain this piece from GM under GM #3868728 for a current GM list price of $194.08 or about $150 from a competetive GM parts dealer.In Appreciation of John HinckleyComment
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Re: Transmission Yoke Search
Thanks. I also found that Eckler's has them for $199.99. I just couldn't find them in their catalogue or three others and had an anxiety attack! Ha! A local drive train shop said they are about to get a shipment in -- $112! Not bad. Think I will get two at that price.....Comment
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Re: Transmission Yoke Search
Gerie-----
Driveshaft shops can often obtain and sell parts like these for considerably less than other sources. However, keep in mind that the aforementioned yoke is a unique-to-Corvette piece. So, make sure that you are getting the Corvette configuration item. Take your old one to match it up and confirm that what you're getting is the same. This Corvette yoke uses u-bolts for u-joint retention. Strap-type retention will work (although it's not "correct")but other types such as the "full round" type in which the driveshaft has to be assembled to the yoke before installation in the car will NOT work on a 63-79 Corvette.In Appreciation of John HinckleyComment
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Re: Transmission Yoke Search
Thanks, Joe. I was also confused because I counted 27 splines but have been told that the right number is 26. I will take the old one (which is badly scored around the center of the shaft) with me to the drive line shop, along with my calipers to make sure that everything is correct. I also have the caps and u bolts. Of course, I am neither a mechanic or auto engineer, so sometimes things look OK to me and turn out to be a silly millimeter off! Did I mention that my 65 was turning mid-12 second quarter miles when I toasted the clutch! Bad boy, I know, but the old girl was showing the Z06s a thing or two. LOLComment
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Re: Transmission Yoke Search
Gerie just curious, is your 65 a 327/365 HP turning 12's?Comment
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Re: Transmission Yoke Search
Yes, it is a 327 but it produces around 460 h.p. and 425 ft pounds of torque. Not bad through a stock Holley double pumper, with street tires (Yoko AVS 215 x 15 on 6" rims), M-21, and 3.55 Posi. Needless to say, it has a lot of Manley stuff in it and aftermarket heads. I did not do a burn out, 'cause I had never run a car on the drag strip. So my tires were cold. Actually, it was my first legal drag race. The first run was a 12.91, so the 12.72 on the second run was not a fluke. And I saved the timing slips, just in case. On the third run, the clutch went south but I still won. The local drag guys think the car would run 11s with drag radials, 4:11, M-20, and bigger carb jets. It was exciting, but I like road racing better. Lasts longer! The car was written up in Vette magazine two years ago. It was completely restored (frame off) to run the Mexican Road Race, La Carrera Panamericana. It finished first in class in 1999 and third in class in 2001, or 13 of 81 cars in this 2000 miles race. With the 3.08 it will run around 160. Down in Mexico we ran several sections where we exceeded 140 with the 3.55 and our rev limiter set at 7K. Needless to say, she won't be any top flight judgings, although the chassis and suspension are mostly stock. I have pictures on AOL if you would like to see "Aztec Dancer."Comment
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