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Post by jims442 on Apr 1, 2014 19:23:16 GMT -5
been really thinking of changeing auto to 4 speed i know it could be quite a project just looking for input the only thing holding me back was the pilot bearing but i saw the other day on the forum that you don't have to drill anymore theres a adaptor is that any good
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Post by keener on Apr 1, 2014 21:24:09 GMT -5
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Post by Deleted on Apr 1, 2014 22:08:22 GMT -5
Nothing more fun than rowing the gears, consider an overdrive, you wont regret it
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Post by jims442 on Apr 2, 2014 7:40:18 GMT -5
for a parts car what else would be comparable sense a 65 442 4 speed might be hard to find for cheap
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Post by keener on Apr 2, 2014 15:08:10 GMT -5
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Post by BR[] on Apr 2, 2014 17:26:07 GMT -5
This is pretty informative. It's from one of the Classic Olds links above.
Parts needed for 4 speed conversion.
4-speed transmission - GM rebuilt Floor hump - GM used or repro Console for 4 speed - Convert an auto console with aftermarket parts Muncie compatible driveshaft - GM rebuilt or aftermarket Bell housing - GM Used Bell housing inspection cover - Repro Shifter and correct ball - GM Used Shifter linkage - GM Used Shifter to transmission bracket - GM - Used Flywheel - GM Used or Aftermarket Pedal Assembly and pads - GM Used for pedals, Repro pads Neutral Safety switch - GM Used Z-bar - GM Used Z-bar to clutch fork rod - GM Used or Aftermarket Z-bar frame bracket - Repro Back-up light switch - GM used or Repro from M+H Electrical Clutch fork - GM Used Clutch pedal to z-bar rod - Repro Speedometer cable - Aftermarket Engine ball stud - Repro Clutch pedal to z-bar rod boot & retaining ring - Boot is repro, ring is used GM Shifter boot & retaining ring - Boot 1s repro, ring is used GM Steering column lower support with hole for clutch pedal to z-bar rod - Used GM Pressure plate, clutch disc, throw out bearing, pressure plate bolts, flywheel bolts - Aftermarket Reverse lockout rods and bracket - Repro Battery Cable - Repro fro American Autowire Battery cable tube - Used GM Firewall boot - Repro
You will also need to have a 4 speed crank that is drilled for a pilot bearing, or drill an automatic crank for a conversion bearing. I bought my conversion bearing from Supercars Unlimited.
The wiring is simple for the clutch switch and the back up lights.
The console harness from an automatic car can be used in the manual trans console.
There are 2 push in sheet metal nuts that are used on the base of the steering column to hold the back up light switch. My auto column did not have them.
Part Numbers from v8buick.com
68" Speedo Cable - 88959477 For 68-72 manual shift cars
Clips for shift rods - 12338114 Also used on the reverse rods too
Z bar and pedal bushing - 406172 Upper bushing and pedal bushing
Wave Washers - 9428369 Used to take out play in the linkage
Lock out rod bushing (upper) - 1394293 On the steering column
Bushing, reverse linkage (on frame) - 1377083 On the "L" shaped rod
GM has discontinued the rubber bushings on the shift linkage. Theses are being reproduced.
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Post by jims442 on Apr 2, 2014 19:48:30 GMT -5
thank you for all the input i really what to do this someone chime in who has done it and tell me its not that big of a deal a lot of parts and money but doesnt seam that difficult
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Post by keener on Apr 2, 2014 21:38:00 GMT -5
thank you for all the input i really what to do this someone chime in who has done it and tell me its not that big of a deal a lot of parts and money but doesnt seam that difficult I pulled ALL the parts from a 4sp 64 cutlass about 1.5yrs ago for close to $800. I bought a new seal kit for the M20, a clutch fork boot, a new clutch linkage firewall boot and a new tranny rubber mount for the cross member. Let me know when you get to the point of welding the z-bar mount on the frame. I have the blueprint specs for this mount. Just remember, take your time when pulling parts from the donor car. Don't forget you need to pull the steering wheel to get the firewall mount plate. This is where the clutch linkage and steering wheel pass through the firewall. If doing this right, you want to pull the crank and have it drilled rather than using the adapter.
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Post by jims442 on Apr 2, 2014 22:17:44 GMT -5
thanks thats what I'm talking about next step find a car if anyone knows of one let me know ill keep you posted
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Post by jims442 on Apr 3, 2014 6:33:03 GMT -5
i'm assuming i'm looking for 64 or 65 66 i think would be different for part exchange
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Post by BR[] on Apr 3, 2014 6:38:16 GMT -5
Let me know when you get to the point of welding the z-bar mount on the frame. I have the blueprint specs for this mount. Keener, if you have a good set of prints for the Z bar frame mount. I'd like to post them on the web page. Thanks, BR[]
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Post by jims442 on Apr 3, 2014 12:56:03 GMT -5
whats the disadvantages of using the adaptor rather than drilling crank really don't want to take it out of car its a new motor
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Post by jcf85post on Apr 3, 2014 13:13:18 GMT -5
I'm sure this comment will be met with great opposition but I have drilled two olds cranks while assembled with an electromagnetic drill press mounted on the stick flywheel,found a drill size just right for interference fit with an early chevy v8 bushing.currently driving and racing this last one,the other I did 40 years ago and raced that motor for many years.
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Post by keener on Apr 3, 2014 14:46:41 GMT -5
whats the disadvantages of using the adaptor rather than drilling crank really don't want to take it out of car its a new motor You need to cut the input shaft of the Muncie. I've spoken to guys that have had this type of adapter bearing fail, but on the other hand, others have used it for years without problems. Do you know if your car has a drilled crank? You might be surprised when you pull it apart.
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Post by keener on Apr 3, 2014 15:02:42 GMT -5
Keener, if you have a good set of prints for the Z bar frame mount. I'd like to post them on the web page. Thanks, BR[] email sent. let me know if you cannot view the attachment.
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Post by keener on Apr 3, 2014 15:08:07 GMT -5
One other thing to consider when pulling parts for this conversion. I would also pull the manual car radiator, otherwise you have to plug the auto radiator tranny cooler ports.
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Post by jims442 on Apr 3, 2014 19:47:02 GMT -5
good thinking theres so many little things you forget but then again its an adventure and thats why we do it most people don't care but we do
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Post by jims442 on Apr 4, 2014 12:25:34 GMT -5
would a 66 parts car work is cross member same and other parts
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Post by keener on Apr 4, 2014 15:33:09 GMT -5
would a 66 parts car work is cross member same and other parts 64 thur 67 should work. The crossmember you have now should be okay. I'm not if the drive shaft from a 66 or 67 is the same length as 64 and 65. My guess would be yes because the wheel base lengths are the same from 64 thur 67.
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Post by jims442 on Apr 7, 2014 7:33:51 GMT -5
whats the differance with the hump i have a floor shift now auto is that different
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