They were 330ish inches with fully ported and welded W2 heads. It had a Holley Pro Dominator on it it.
They we’re cutting the lifter valley out of the block and putting it back in to correct the lifter bank angles. I don’t know for sure if Glidden did that work himself but I suspect he did. Paul Gentilozzi was a guy that did a lot of lifter bank angle corrects for other racers.
Also, I’m not sure if he moved the lifter bank angle all the way to 48 degrees or somewhere between 59 and 48. But they were definitely changing it.
They had 4 speed Lenco’s and the weight breaks changed so often many times the ink wasn’t even dry on the paper before they changed it again.