Quote: Interesting you post this because I was trying to decide if I should mill the 452s as you did here or go 915s. I could go either way right now as I have both available.
The engine ran plenty good I just had to start pulling out timing as the summer temps got up there.In the end I had 10* out of it but it was 100* plus outside !
I tried like you can't believe to find a set of 915's so I could take advantage of the zero decking but I had no luck. These 906's were virgin, so I did get lucky there. I would use the 915's and set the chambers at 79cc. You will have to chamber cut them and work them a little but it's worth it.
