I definitely want to go to ten rib but lower crank pulley is the obstacle. My set up does have slippage but not terrible. The motor is way over built for the boost presently. @mopardude318
Because of the larger cubic inches of the 408, and my little blower is only 162, I’ll be luck to see 4 psi of boost. But, never the less, I’ll have some. Lol