First Generation Firebird
Posted By: Jacuzzi Clutch Spring Diagram? - 06/03/10 02:19 AM
Hi!

Working on a '68 Firebird with a 400 HO motor. When we got it the clutch spring components were rusted away. Ordered the replacement parts. Not sure how it goes together. No diagram with the parts. Did find one diagram but it's not too clear. Can anyone point me toward a better one or how to hitch this up?
Posted By: Quenton Re: Clutch Spring Diagram? - 06/03/10 02:30 AM
This is in the 1968 service manual:


Attached picture Clutchpic .jpg
Posted By: Jacuzzi Re: Clutch Spring Diagram? - 06/03/10 03:20 AM
Thanks a bunch! That helps a lot
Posted By: Bluebird428 Re: Clutch Spring Diagram? - 06/03/10 06:48 AM
what part of the frame or engine does the front of the spring attach to?
Posted By: Quenton Re: Clutch Spring Diagram? - 06/03/10 06:59 AM
If I remember right, to a bracket on the subframe. I can go take a peek at mine.
Posted By: Gus68 Re: Clutch Spring Diagram? - 06/03/10 07:19 AM
It attaches to the clutch fork. You will see a small hole in the fork at the end.
Posted By: Bluebird428 Re: Clutch Spring Diagram? - 06/03/10 06:11 PM
One end in the fork the other end.....?
Posted By: Gus68 Re: Clutch Spring Diagram? - 06/03/10 11:28 PM
Posted By: Quenton Re: Clutch Spring Diagram? - 06/03/10 11:32 PM
That spring attachment just prevents the assembly from rattling when the clutch is engaged. The return spring attachment is what he needs. On my GTO it's to a frame-mounted bracket. I can't get under my OHC car to see where it's attached, though I thought it was attached to a bracket on the subframe. For a V-8 car, it might be attached to the front starter support.
Posted By: Gus68 Re: Clutch Spring Diagram? - 06/03/10 11:40 PM
Your diagram is for a OHC 6. The smaller diagram shows the 8 cyl. This exactly how I found it off a 69 FB. The "return spring" to put the clutch back in neutral position is supplied by the pressure plate via the fork. Another spring to the frame would be weaker and redundant.
Posted By: Quenton Re: Clutch Spring Diagram? - 06/03/10 11:50 PM
This is the view I am used to on my GTO. Note that the anti-rattle spring is labeled (incorrectly) as the return spring. As you can see, it would not return anything. The return spring is the one located on the frame bracket to the left arm of the counter-shaft.



Attached picture Clutchpic .jpg
Posted By: Quenton Re: Clutch Spring Diagram? - 06/03/10 11:52 PM
And this is the big-car set-up, which looks more like the Firebird's type than the GTO. Same problem with the labeling of the anti-rattle spring:



Attached picture Clutchpic2 .jpg
Posted By: Quenton Re: Clutch Spring Diagram? - 06/03/10 11:53 PM
Originally Posted By Gus68
Your diagram is for a OHC 6. The smaller diagram shows the 8 cyl. This exactly how I found it off a 69 FB. The "return spring" to put the clutch back in neutral position is supplied by the pressure plate via the fork. Another spring to the frame would be weaker and redundant.


That's actually the correct way to wear out the throw-out bearing.
Posted By: Gus68 Re: Clutch Spring Diagram? - 06/04/10 01:56 AM
I stand corrected...
I found a diagram on YearOne catalog. It shows the setup for 67-69 & 70+.

It looks like a have a frankinstien 67-69/70 setup. There is a bracket that mounts on the frame for a spring.



Posted By: 69inoviedo Re: Clutch Spring Diagram? - 06/27/10 03:25 AM
classic industries has that frame bracket for $17
Posted By: Yellowbird Re: Clutch Spring Diagram? - 06/27/10 07:31 AM
This may also be helpful.

http://thefirstgensite.com/library/partscounter/illustrated/clutch/clutch2.jpg
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