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-   C4 ZR-1 Discussion (https://www.corvetteforum.com/forums/c4-zr-1-discussion-50/)
-   -   1995 ZR-1 Cylinder Heads (https://www.corvetteforum.com/forums/c4-zr-1-discussion/4265806-1995-zr-1-cylinder-heads.html)

mrshepler 04-22-2019 08:42 AM

1995 ZR-1 Cylinder Heads
 
How do I identify Dunn cylinder heads on my 1995 ZR-1 Corvette?

Landru 04-22-2019 08:53 AM

Wrong forum to ask, this is C6 Gen & you need C4 Gen. :cheers:

mrshepler 04-22-2019 09:34 AM


Originally Posted by Landru (Post 1599269772)
Wrong forum to ask, this is C6 Gen & you need C4 Gen. :cheers:

Sorry, rookie mistake. I have a C6 as well. Thanks.

Tact 04-22-2019 11:11 AM

I moved it.

mrshepler 04-22-2019 11:43 AM

Thank you.

ccmano 04-22-2019 02:15 PM

Look at the side of the head. There will be an imprint that says Dunn. It’s located top, center and on the outside of the head itself.
H

http://a65.tinypic.com/2r783n9.jpg<s...olor:#333333">

mrshepler 04-23-2019 09:09 AM

I found the Dunn markings. Thank you.

Demps 04-23-2019 09:23 AM

What number is your car?
Ted

mrshepler 04-23-2019 09:33 AM

My car is number 151, which I find interesting. I did not think there were that many cars produced with the Dunn heads.
Pictures attached. Sorry they are backwards. It was easiest to take the pictures with a mirror.
https://cimg1.ibsrv.net/gimg/www.cor...fa6904e917.jpg
https://cimg5.ibsrv.net/gimg/www.cor...88b21c1feb.jpg

Demps 04-23-2019 09:43 AM

https://cimg3.ibsrv.net/gimg/www.cor...f28ec2ec4.jpeg
https://cimg5.ibsrv.net/gimg/www.cor...8dafb9a0c.jpeg

Rkreigh 04-24-2019 05:09 AM

the 93 last run of engines when Birmal heads ran out the Dunns castings took over

some engines had one of each as the cutover occurred

they have some nice improvements from lessons learned and seem to flow just a bit better and help out with the chain rattle on startup with improved tensioner


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