Got me wondering what might fit a stovebolt...............hmmmmmmmmmmmmmm?
Maybe this isn't a stove bolt but, check this out. When I saw this I sent Rich an e-mail and he knew all about it.http://www.racingstudebakers.com/foo/viewtopic.php?f=19&t=2195
So the answer to your question may be....a small block chevy head and a half.
Milwaukee- 1 & 2/3 & 4 are around 4.625", I don't have notes on the center with me right now but 2 & b3 bore spacing is over 5.5", I think it is actually 5.750"
That is one of the big problems with putting "modern" OHV heads on early motors. The center bore spacing is always larger.
Rich can talk specifics but the Ford Y block head he put on the Plymouth did not line up with the bores, everything was a little off.
I personally find it more interesting to fit odd parts, while it is probably more effective to just engineer a head for the motor, I like the idea of using a original head and mounting it to the wrong engine.
Just to clarify, the only reason I have been thinking of this is because Rich has an engine ready to go, we talked about maybe making a flat head for it but he already drilled out the valve guides. Rich had the idea of making something like a Kong head where the relief was in head rather than the block. In my humble opinion, both the ideas we have discussed take advantage of the very unusual "pop up" pistons Rich needed to use for the morton & Brett head.
We will se what happens, first the engine needs to be in the roadster and the the car needs to run with the Morton & Brett
The pics Rich posted of the Pontiac head are what is great about Rich. We talked on Saturday when I was there to work on the Dodge and he pretty much said he didn't want to run another Frankenstein OHV engine, then look what he does on Monday, cuts up the head. Probably to prove to me it was a bad idea, maybe because he was curious, maybe a little of both!
I don't know if any of you know this but most of Rich's intake and header flanges are cut from a huge 3/4" thick pipe that Caltrans dug up when they built the sound wall behind his house. Caltrans left a big pile of flame cut chunks. He flattens a piece out with his hydraulic press and then machines it flat on his mill, then machines the flange.