You've
Have you checked block for straightness, have you looked at block deck thickness in this area? 10 lbs. boost isn't anything. also do you have a boost retard? just trying to help.
i,d also look at spraying with alcohol in frt. of supercharger even if afr. is good, cools intake charge to eliminate detonation. The 1008 has a fire ring around cyl. .
