Is 426ci 360 a small block?

View attachment 1715115094 The rocker system while on the 273. We just reused it on the 424/360........
Just so I'm clear on what was done here
You made 625 hp on the rhs/indy iron heads without moving the pushrod ??
Has your costumer Ever mentioned what the car ran at the track
I understand that there are certainly better heads to choose and after the expensive solid roller cam valve train
Components needed the smart money would spend a little more on a larger head
But that is pretty cool to see actually amazing and I don't use that word much
Thanks for sharing