mrshepler

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

Landru

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

mrshepler

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

Tact

I moved it.

mrshepler

Thank you.

ccmano

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

mrshepler

I found the Dunn markings. Thank you.

Demps

What number is your car?
Ted

mrshepler

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.

Demps

Rkreigh

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