Dr L-88

Like the title says, I will give $50 to the first person who can POSITIVELY identify these heads. Here is what I know about them................they are bare aluminum castings.......................they are for a small block Chevy........................the ONLY marking on them is 003 on the end of one head...........................they are hemispherical combustion chambers. Some say they are Mickey Thompson or Leo Lyons castings, another says they are GM prototype castings for the Grand Sport engine program from 1962. I really have no idea but I will give $50 to the first person who can provide undeniable proof of whose castings they are.

Thanks,
Rex

Dr L-88

Too bad Chevy didn't take these to production....................

http://blog.hemmings.com/index.php/2...ig-block-v-8s/

TCracingCA

Ardun Small Block hemi heads to me!

Nowhere Man

Smoky Yunick NASCAR heads

http://www.hotrod.com/cars/featured/...-damn-in-town/

Dr L-88

I agree Derek, they look similar to Ardun heads, but last time I checked, Ford heads wouldn't bolt to a small block Chevy.

http://www.museumofamericanspeed.com...sion,2919.html



I wish they were Keith. Supposedly GM made only 5 sets of these for the Z/28 Trans AM Camaro racers.

http://www.guinns-engineering.com/Ri...0and%20Cam.htm

rick charles

Nascar turbo design heads .......................

AZDoug

Dunno what they are, but the ports look pretty small.

Where do you find this stuff????

Doug

Dr L-88

I agree Doug, the ports do look small which leads me to believe they are not a recently made head. I guess I'm just fortunate to be in the right place at the right time, AND much of this stuff finds me.

I just like this old "odd ball" stuff.

More odd / NEAT stuff to come in a few days.

Thanks,
Rex

63 340HP

Very similar chambers to Ardun Ford heads. The machined ends and water jacketing looks similar as well.

The chamber design looks to be pre-50's, as most post WW2 designs share the polysphere influence from the reverse engineering of aircraft engines and the experience that the mechanics returned with on what was developed as the engines evolved.

The unfinished machine work, no plugs in a few chambers, leave me to think they were mock up castings.

No matching intake?

Good door stop or bookend material in a mancave.

redvetracr

it looks like someone is changing the rules in the middle of the game...

AZDoug

Wouldn't you like to have some of these motors?

Doug

MarkC

I was in Rick Hendricks Museum last March and he had a small block Chevy engine with hemi heads on display. I do not remember much more and we were not allowed to take pictures. I think there was some mention of NASCAR in the write up. Please let us know what you find out.

After reading Keith's Hot Rod article, I think that was the car I saw in Mr. H's museum.

Dr L-88

Sure would Doug. I have that issue stored away, gonna have to dig it out and review it..

Thanks,
Rex


The one in Hendrick's collection may be referred to in this link to the Yenko forum. Will definitely keep everyone informed.

http://www.yenko.net/ubbthreads/ubbt...aro-ever-all-a

Thanks,
Rex

PAmotorman

they may have used a 350 crank offset ground to 3.625 stroke using a 2.00 crank pin

Dr L-88

That sounds like the "voice of experience".

ohiovet

Rex,
I saw a set of those heads recently...
Oh, it was at your house.
Pretty Cool.
Bruce

JohnZ

Chevy Engineering experimental castings typically have cast-in "O-dash" casting numbers - those must be aftermarket/non-GM castings.

pewter-FRC

scroll down to post 46

http://www.jalopyjournal.com/forum/t....950579/page-2

jimh_1962

I just sent that issue back east to a buddy of mine for a Christmas present.

TCracingCA

Ok where did I leave off?

Ok when I mentioned Ardun, I was not talking about their Ford units, but the even rarer Small block Chevy units! To research these, I probably should look up who used to work at Ardun and went to Chevrolet or elsewhere.

A hemi head was tried by a few like Smokey even, the Donovan guys etc. These could be Donovan heads! They had a small block Chevy unit that evolved from the Ardun design!

PS Rex, if I am right, you know to keep the money!!! Remember!!!!!!