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#1
10-19-2008, 09:36 PM
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WTB Driveshaft Yoke
Looking for a fine spline yoke to mate with a Super T10. I believe the TH400 yokes are the same.
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Mark Las Cruces NM ___________________________ Current Project: '67 Catalina Convertible 400 4-spd |
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#2
10-20-2008, 08:32 AM
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Have one that came off a 67 turbo 400 driveshaft. Has 31 teeth, don't know part number. $25 plus shipping.
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#3
10-20-2008, 08:52 AM
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Let me verify spline count tonight. If correct then I'll take it. Thanks!
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Mark Las Cruces NM ___________________________ Current Project: '67 Catalina Convertible 400 4-spd |
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#4
10-20-2008, 08:53 AM
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DRIVESHAFT/YOKE
 I have a driveshaft out of a '66 A-body that had a Super T-10 and 12-bolt chevy rear end under it, if that may help. I'm in south Florida. Thanks, Bob.
Last edited by ROCKETMAN269V; 10-20-2008 at 08:55 AM. Reason: added info |
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#5
10-20-2008, 12:54 PM
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I won,t say that i am 100% correct but i think they are differant, i switched from 4 sp. to turbo 400, i had to change my yoke, i also have one up for sale for a Muncie style trans.
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#6
10-20-2008, 01:15 PM
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DRIVESHAFT/YOKE
67 CRUISER
If you had a Muncie M20 or M21 4-speed, it would have a different yoke than a B-W Super T-10, which has the same spline as a T-400. |
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#7
10-20-2008, 06:42 PM
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or a 71 or newer Muncie
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#8
10-21-2008, 07:47 PM
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There are 2 different dia TH400 yokes...pre-69 it is 1 5/8......69-up... it is 1 7/8.
I assume you need a short TH400 yoke....there are also different length yokes. |
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#9
10-22-2008, 04:01 PM
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My spline count on the tranny is 32. I need to measure the shaft diameter now I guess...
I also assume I'll need the short yoke - but how do I tell? Car is currently an automatic, converting to 4-speed. I know the driveshaft is about 1" shorter for automatic cars than for 4-speed in a '64 A-body.
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Mark Las Cruces NM ___________________________ Current Project: '67 Catalina Convertible 400 4-spd |
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#10
10-22-2008, 07:48 PM
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I think you need the short TH400 yoke...the sleeve is 3.5" long while the long yoke has a 5" sleeve. I attached a pic to show the difference.
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#11
10-22-2008, 09:31 PM
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SO, I have a couple of the short yokes and one long yoke. On the short yokes, some have slines all the way to the end and some start recessed in about 1/2 inch.
I do not know what year either of my TH400's are from. How do I know which yoke to use? On my race car, I am using a short yoke with slines to the end and it is out of the trans about 1.5 inches. On my street car, I am using a short yoke but with the splines recessed about 1/2 inch and with the yoke one inch out of the trans. Will the long yoke "bottom out" in the trans if its not the right yoke? I am very confused? How much is the optimum spline insertion for the yoke splines over the trans splines?
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All of my cars are Hybrids...they burn gas and rubber!  '73 Ventura, Spotts 462 roller 10.785 @ 122.79, 1.507 60 ft 2850 lbs. plus driver, 3150 race weight '69 Firebird Convertible, Spotts 455 with long branches 12.561 @ 107.62, best on old 455 4290 race weight '72 Formula 455 HO numbers matching auto, work in progress! |
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#12
10-22-2008, 09:42 PM
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Long yoke will bottom out.
I believe the ideal amount of yoke protrusion is approx 1". I think you need the short yoke with splines to the end. |
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#13
10-25-2008, 05:31 PM
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There were over a dozen different T-400 yokes used by GM from '65-79.
The T-400 yoke you're wanting is one of the medium length ones, the '67-71 GTO/Pontiac one, or the '72-75 version. Looks like several contributors are referring to this length of T-400 yoke as the "short" yoke. The short yoke is a different animal. Pull one out '76-79 Seville & see how truly short one is! |
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