I was thinking about throwing a little more jet at the engine as the dyno sheet shows 13.2 a/f ratio. I would assume I'd see any improvement in mph and having just read that section yesterday I figured I'd see if any other members/racers had done that. The bottom of the M1 intake has no dams . Flat so I'm thinking it may suffer a bit from the 5-7 issue described by Vixard. I doubt it'll hurt to try. And 4.5 bore 4.15 stroke flat top diamonds 13.8 308 comp solid roller
