[Houdini]

Thanks for starting this thread.
The previous owner told me he had installed a Brumfield head. I was also wondering what the compression ratio was. I thought I had read that there were different ones, starting at 5.5, then 5.9 etc.

I went out and looked at my head and on the top of the casting there is a marking with B - R, with the dash in-between the two letters.

I thought these were just heads that were machined down, but it seems like they were cast this way, based on the marking on the head being raised letters, versus stamped.

So were there different compression head ratings or just 5.9 for all the Brumfields, or were the different ratings offered by other manufacturers?