The "GUTS" of this 425 have changed many times and will keep "evolving" as I see fit. I started with magnafluxed Oldsmobile Big Valve C Heads and sent them over to Mondello (A.K.A. "Money-Dello") for larger valves, porting and polishing. Once I got them back I decided to remove even more metal and as the saying goes "If you want something done right you have got to do it yourself". Not that Mondello didn't do what I paid  for but you know how it is... when its yours you want it to be the very best it can be and sometimes you just cant buy that...
1967 Oldsmobile Cutlass Supreme Post Coup.
Now I know your  LOVING looking at these! Some of you might appreciate what you see in these pictures a little more than others...  So wanna see more of these heads? OK! Your twisting my arm!
I learned to do this from my good friends at Griffin Racing Engines who happen to own the only 76 within 30 miles who carry high octane Nascar Racing Fuel... both 110 leaded and 100 unleaded.

I have to tell you that ...NAH! I don't!!! Just enjoy!
:)

OK OK OK!!! ONE more ...maybe you can print it and put it up on the wall of the shop bathroom next to Miss January!

Now that I know you are thoroughly impressed, lets move on to the ...Valves!
Didn't you read?
MOVE ON TO THE VALVES!