View Full Version : ls1 dynatech zbar


1977nova
03-30-2013, 10:21:02 PM
Has anyone ran an LS engine with the mechanical z-bar with Dynatech headers? If you have could you please post a photo of your setup.

73 L92
04-01-2013, 10:15:50 AM
I have on my 73. Made my own cross shaft and used rods for pivots.

Works well. I need to resize the photo to attach.

1977nova
04-01-2013, 10:55:47 AM
Thank you for the answer. I figured I would need to mod the zbar. I just wanted to see how someone else did it so I can get a better idea. What did you use for the pivot ball on the block side?

RICARDO1969
04-01-2013, 11:21:36 AM
what are you using for a trans?

1977nova
04-01-2013, 11:37:38 AM
t-10

RICARDO1969
04-01-2013, 11:39:13 AM
check out my old build for my camaro might help you out.
http://www.nastyz28.com/forum/showthread.php?t=199752&page=3

1977nova
04-01-2013, 11:43:45 AM
Nice build. What headers are you using?

RICARDO1969
04-01-2013, 12:03:15 PM
I don't have this car anymore i just thought the info might help you out.
as far as headers go i never bought any for that car so cant help you there.

RICARDO1969
04-01-2013, 12:51:17 PM
You could always run a hydraulic clutch and avoid the headaches.

1977nova
04-01-2013, 12:58:04 PM
I want to run the mechanical setup. I have an idea how I want to do it. I was looking to see how other people did it. I mostly need to see how to route the zbar in regards to the headers. I think I just need to cut an move the one arm on the zbar and use the rod end linkage.

RICARDO1969
04-01-2013, 01:17:40 PM
Post a build thread when you do this so it can help others out, good luck!

Protour-Camaro
04-01-2013, 03:12:17 PM
Also consider the orientation of the engine. The Z-bar may not line up if the engine is too far forward or back.

1977nova
04-01-2013, 03:26:01 PM
I have considered that. My frame mount is bolted on and would be easy to move. I have lots of ideas on how it could work. I am just curious to see what has worked.

AlbertaZ28
04-02-2013, 11:34:32 AM
You can get a a pivot ball mount from scoogin dicky parts to adapt to the LS. I bought one but I would of had to grind my brand new quicktime bellhousing to make it fit, so I ended up with a hydraulic setup. It makes it nice and clean.

1977nova
04-02-2013, 06:39:46 PM
I have on my 73. Made my own cross shaft and used rods for pivots.

Works well. I need to resize the photo to attach.


Were you able to get the photo resized? You can send it to me and I could post it if you like.

73 L92
04-03-2013, 10:53:00 AM
I used the dyna tech 1 7/8" header. Ls moved 1" back. My car was a auto in it's previous life so I didn't have a cross shaft or clutch pedal.

For the engine pivot stud mount I used a hole in the block. Stock pivot stud ground down slighlty to fit the cross shaft tube. I had one of the bent angle brackets that mounts to the bell housing for the stud mount but it hit the headers as I recall so I didn't use it.

I made a new cross shaft and frame mount. Asked and recieved from one of the good people on this forum the approximate measurements of the stock cross shaft arms for a starting point. I used a Speedway motors clutch fork designed for rod ends. The lower arm does get close to the header. I ended up with a male /female 3/8" rod end to the clutch fork. Ran it all last summer with no issues.

I did the mechanical because it's cheap and reliable. Maybe $75 in parts. Hydralic is $300 plus?

1977nova
04-03-2013, 11:59:59 AM
Here is the pic

http://img27.imageshack.us/img27/27/painted73camaroonthegro.jpg (http://imageshack.us/photo/my-images/27/painted73camaroonthegro.jpg/)

ErikNORCAL
04-03-2013, 10:06:39 PM
That is awesome, couple of questions:

by cross shaft do you mean the z-bar?

is the pivot ball mounted on the block or the bellhousing? looks like a 621 and I see the 'LS' model looks like it has a mounting provision on the side for a pivot ball.

What clutch are you running and how does it feel?

Have the parts mostly to do this... in the next ten years..

73 L92
04-04-2013, 08:39:11 AM
Now that I look at it the pivot is on the bell housing. It's been awhile since I looked at it.

Cross shaft - Z bar same thing. I did weld diagonal braces to the arms to prevent any flex.

I"m using a LS7 clutch, pressure plate and LS flywheel. Great feel. With the rod ends it's easy to adjust the engagement to your liking.

My wife has driven it a number of times in traffic without any issues.

1977nova
04-04-2013, 11:14:39 AM
I was thinking of using the bellhousing mount as well. It moves the zbar back from the header. I will just have to move the frame mount back to keep it aligned.

What did you use for the zbar tubing?

73 L92
04-04-2013, 01:33:22 PM
It's been awhile but I think it was 1/8" wall tubing. I had to grind down the OD of pivot a bit to get it to fit inside. Once had the right length of tubing to fit between the engine pivot and the frame pivot I drilled holes in the tubing and drove roll pins across the tube to keep the tube from moving left and right. Gave it some room for engine rock. Added the grease zerks for easy lubing.

The bottom arm is close to the header. I actually had to grind a bit of an angle on it to clear.