Frequently asked questions about 4 speed parts..PLEASE ADD TO THIS!!

Can I ask about the clutch pedal linkage to z-bar?
What are the differences if any, are there between the years for this linkage?
In my 72 manual, (I now have a 71, but thought it could be a starting point) the connection to the z-bar and the clutch both have a stamped 90 deg. leg with a round pin diameter to go through the hole of both matting parts.
I have an exact appearing linkage from the z-bar into the boot through the fire wall one more bend, then at the end it has 2" of threads and an adjustable U shape that is put on this threaded end of the linkage.
Are there different clutch rods?
Or, maybe someone broke the pin on the clutch end and just cut the end off and threaded the rod?
Here is a picture of what I have.
Thanks!
Troy

 

That looks like it's broken at the pedal side.

 

Thank you for the quick response!
If someone has a picture of a good one, maybe worth posting still.
I have created a WTB thread, thanks again!
Troy

 

Sure. Here you go.

 

Who has the part # for the z-bar bushings ? Looks like a little A-arm bushing . Guess I have too many threads subscripions to find it :0
Thanks
DL

 

Not sure who's part number you're wanting, but the parts place's number is MT21677T.

 

Same part used in a 60s Vette.

 

This is the bushing.

http://www.zip-corvette.com/catalog...-82-rear-sway-bar-link-bushing/category/6717/

 

387-2955 Not a phone number, but a GM part number. Should come back as late 60's corvette rear suspension bushing at your Chevy dealer. Two come in the bag.

 

There we go :beers2: Brad's the man.

DL

 

I have a question in reference to the consoles or whatever you guys decide to call them. I have the short one up front around the four speed shifter, but instead of the tri shields logo on the little round emblem I have a 4 speed pattern.....why? The car does have the tach, but I am not sure that it came with any of the console at all. The car is super stripped down so I'm thinking it was added by the second owner.
-Kyle

 

What and where to buy a complete Muncie 4 speed set up for a 1970 GS455? Will any Muncie M20 or M21 work? Complete, meaning shifter with linkage, ready to bolt in. M20 vs M21 difference, which is the desirable one to try to find. The car currently has a Saginaw 4 speed.
Thanks in advance!

 

Kyle,
To the best of my knowledge (90% sure) you have a 69-70 consoles and they had the 4 speed pattern and you need to use a black shifter ball with no 4 speed pattern on it, just black. Did you look for the build sheet? Check behind the rear seat or on top of the fuel tank. If you find it, it will tell the story.

Ron

 

The 69-70 big block clutch set up is different from the small block and other years. The Z-bar and Clutch fork are the two main differences. The z-bar had a bushing on the pedal rod side and the clutch fork had a pin with round eyelet and bushing. There was someone I believe on this board who reproduced them. I think his name was Dave Kliner. Sorry I don't have his number. Maybe some her can help out! Very rare to fine an original.

Ron

 

M20 is a wide ratio gear set, M21 is close ratio. M20 will have a lower (higher numerically) first gear which makes it a bit more friendly with cars with higher (lower numerically) rear end gears. The one that's more desirable is the one that fits your application better! You didn't mention this specifically, but the M22 is usually the most desirable as it is a close ratio with gears cut at a different angle to aid in strength.

I have an M21 in my car with a 3.42 rear and it plays pretty nice together.

 

A while back i asked about the brake pedal on a power disk car with 4spd. Rich Johns was able to provide these pics

 

Only automatic trans Buicks got the brake pad with the disc brake insert.

 

Thanks for sharing. your thoughts Jim and Jason. I am starting to put my 70 GS 455 4spd back together however it is from leeds and not flint.