Dunno if this has been posted
https://www.forbbodiesonly.com/moparforum/threads/the-slug-400-on-the-dyno.80843/
https://www.forbbodiesonly.com/moparforum/threads/the-slug-400-on-the-dyno.80843/
I think Uncle Tony was stretching the truth a bit!Uncle Tony says his ‘72 Road Runner with a 400 ran high 12’s stock. It had to hook up to do that.
Yes. The 4spds, especially trucks had the forged cranksI had a 72 230 thick main web block that had a factory forged crank. I personally disassembled the engine and the bearings were date coded to when it was built. The story was that it came out of a 72 charger with a 4 speed. I believe a number of early engines with 4 speeds received forged cranks.
In our testing the early 230 blocks with only the double size
casting numbers in height (Cold Weather Blocks) have the
thickest walls by far. They are worth money and I am constantly
looking for Them. The thicker the wall = the better potential ring
seal.
I believe we have one of the fastest and most successful Stock
400 Racecars in the Country IF not the fastest. We built it and did
not buy a fast car!
I have disassembled over 30 400's over the last 50 years and have
yet to find a Forged Crank in my experience.
Google John Irving Drag Racer