What spark plugs...??

Biff said
:popcorn:

Yea, me too...

yellow rose said
If he is actually at 10.5:1 then he can start with a 12 Champion. I run a 12 on 11.25:1.

Yes, I’m a calculated 10.5666666:1. I also have a fairly long cam: 270/276 @ .050