What is it?

[crossboss]

Boys,
Not necessarily a T/A engine, however, what is it? Winner gets a cookie.
Click on pic to enlarge.

[BULLITT65]

I would guess some kind of Indy 500 motor

[69Z28-RS]

Donovan aluminum Chevy small block 350 with 'custom machined' hemi-spherical heads and (mechanical fuel injection- Hilborn or similar)..

http://www.donovanengines.com/donovan-engineering-small-block-chevys/

Gary

[BULLITT65]

Well I see it says Donovan on the block, I thought since it is not a T/A engine the question was oriented toward what application.

[69Z28-RS]

A friend of mine and 'famous - or infamous?' - depending upon whom one spoke to...   ..  62 Corvette expert (Dale Pearman -now deceased) had a 400 ci Donovan engine in a '62 Corvette 'street car' once upon a time - it was really wicked!... not sure where that Corvette went to...?

[crossboss]

Donovan aluminum Chevy small block 350 with 'custom machined' hemi-spherical heads and (mechanical fuel injection- Hilborn or similar)..

http://www.donovanengines.com/donovan-engineering-small-block-chevys/

Gary

You get half a cookie. Who made the cylinder heads?

[Trans Åm]

Smokey Yunick?
Mickey Thompson?

[69Z28-RS]

We know what Smokey once did some 'small block hemi head' work for Chevrolet, but I don't recall ever seeing those heads; from examining the machine marks on the heads, doubt anyone could *tell* who machined them out.. 

[BULLITT65]

I can do a paste and search on Donovan.

So what is the application?

[PURESS]

Hemisperical heads for small block Fords...

Scott

[PURESS]

Hammerhead

[maroman]

Did it actually ever run?

[crossboss]

Boys,
Here is a clue for the heads: So-Cal.

[bcmiller]

Leo Lyons heads?

I think he was from Riverside, CA.

[PURESS]

Arias