Stopping the knock: Lower compression and ported heads...

Wow man, i've been nudging some guys to push the envelope a little more on their limited use "hot rod's", but this one really has me thinking.

Thanks for posting your numbers. :thumbrig:

I assumed you have the Lunati with 316/326 advertised duration. Looking at the XE285HL and the 509, it's hard to comprehend that the cranking compression/knock tolerance could be worse with the Lunati?

Grasping at straws here, But is there any way that cam was misground or mismarked?

Keep us informed. This could be a learning experience for some of us.

Good Luck, Rick