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post #1 of 33 (permalink) Old 02-09-2011, 03:37 PM Thread Starter
 
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new clutch

Hi!

Can I find out which clutch will fit my muncie transmission (4speed) without removing the old one first?
I'm not sure if the transmission is the original one, maybe it isn't a 4 speed muncie from 1966. In my catalog there are 10,5 and 11" disc sets for 10 or 26 spline transmissions. 4 choises.. only one will fit...

Chris
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post #2 of 33 (permalink) Old 02-09-2011, 03:48 PM
 
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Originally Posted by Chris-Austria View Post
Hi!

Can I find out which clutch will fit my muncie transmission (4speed) without removing the old one first?
I'm not sure if the transmission is the original one, maybe it isn't a 4 speed muncie from 1966. In my catalog there are 10,5 and 11" disc sets for 10 or 26 spline transmissions. 4 choises.. only one will fit...

Chris
its probably a 10.50 with 10 splines.
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post #3 of 33 (permalink) Old 02-09-2011, 04:48 PM Thread Starter
 
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Is there a way to check it by a number on the transmission or something like this?
I don't want to remove and check it before I can order a new one...
How long will it take to change the clutch on my car? Is it a very difficult job?
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post #4 of 33 (permalink) Old 02-09-2011, 05:00 PM
 
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Originally Posted by Chris-Austria View Post
Is there a way to check it by a number on the transmission or something like this?
I don't want to remove and check it before I can order a new one...
How long will it take to change the clutch on my car? Is it a very difficult job?
you can look at the year code on the trans. all 64-68 had 10 spline input and 27 spline outputs. some later model muncies had the 26 spline input but they also had fine spline output shafts(32)spline.
if you have a stock flywheel and bellhousing you have a 10.5 disc.

it is not hard to change. maybe 2 hours for someone who has done it before.
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post #5 of 33 (permalink) Old 02-09-2011, 06:57 PM
 
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maybe 2 hours for someone who has done it before.
+1, even if you are just familiar with doing any RWD clutch swap, not specifically the goat.

1966 GTO 428ci/4spd - spun bearing
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post #6 of 33 (permalink) Old 02-09-2011, 07:52 PM
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Be sure to mark your rear driveshaft yoke-to-u-joint before you pull the driveshaft. That way you won't get it out of phase. I've had really good results with LUK clutch kits....light pedal but plenty strong. You'll need to pull the flywheel and get it resurfaced to get the best results, too. Goes without saying, but remove the shifter before you pull the trans, and make SURE your throwout bearing is the same height as the one you removed. Also, install a new pilot bearing in the crankshaft. Driven right, clutches last a long time. I've had the same one in my '65 GTO since the mid '80's.
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post #7 of 33 (permalink) Old 02-11-2011, 02:15 AM Thread Starter
 
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Which clutch kit will be good for mainly street use and maybe 1-2 times a year the 1/8 or 1/4 mile drag?
Is RAM Automotive good? I'm thinking of medium or heavy duty... does heavy duty have any disadvantages compared with the medium?
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post #8 of 33 (permalink) Old 02-11-2011, 07:57 AM
 
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Originally Posted by Chris-Austria View Post
Which clutch kit will be good for mainly street use and maybe 1-2 times a year the 1/8 or 1/4 mile drag?
Is RAM Automotive good? I'm thinking of medium or heavy duty... does heavy duty have any disadvantages compared with the medium?
ram looks good. if were me i would get this one.

HDX Performance Clutch sets
GREAT DRIVEABILITY AND PERFORMANCE TO 450 HORSEPOWER
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post #9 of 33 (permalink) Old 02-11-2011, 10:09 AM
 
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Originally Posted by geeteeohguy View Post
Be sure to mark your rear driveshaft yoke-to-u-joint before you pull the driveshaft. That way you won't get it out of phase.
could you explain this a little more please?


Shane Doss

66 tempest
64 el camino
02 mullis dragster
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post #10 of 33 (permalink) Old 02-11-2011, 11:39 AM
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I recommend LUK clutches for street driven cars. I have a McCleod in my '65.....its very Heavy Duty. The disadvantages of extreme duty clutches is usually high pedal effort and wear and tear on the linkage. The disadvantage of a weak clutch is slipage under load. 66Tempest, yes: the driveshaft should always be marked so it can be installed in the same position it was installed originally. Flipping it 180 degrees can sometimes result in driveline vibration. I've done a lot of u joints and driveshaft R&R, and this is SOP.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring
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