Show 'Em Off Slant 6's

hyperpack 170

built to rev to 7.5k.
Not saying that you can't,BUT, I visited Jack Clifford in the 90's at his shop.I was in the mind set same as you.While he was showing me around his warehouse he explained "Build for torque,Not RPM". He went on with explaining why,the head,intake etc was not designed for high RPM and why the long ram was designed for road racing.Pulling hard (Torque) coming out of turns is why the HyperPack Valiants ruled the tracks of the day."The engineers knew what they wanted,they proved it with the long ram 413 300's of the day and applied that to the HyperPack.
Thus for drag racing the short ram did better on the strip."(1961 RamChargers)
He continued "So I made them both". He was really a neat guy.I enjoyed my day with him.He really was into the Hudson Hornet and it's days racing.The company sure changed after his passing.
Just my 2 cents.