Is 426ci 360 a small block?

o1heavy said

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

Click to expand...

Yep, didn't move the pushrod. Made the pushrod hole smaller (see page 2) so I could grind more of the pinch. If I ever did it again I would move the pushrod hole over and grind some more.

Owner is a street and slalom racer. He gave me a ride in it. When he nails it your ears meet at the back of your head, your lips mash back against your teeth and the corners of your mouth stretch back to where your ears used to be. Never felt anything accelerate like it does.