Flamboro 604. Not sure about ACT tho.

yep just checked looks like the ZZ4 609 is the ACT engine. They rate it at 355 hp similair to the 602 that way. Smart feller arent ya Mike.

you calling me a fart smeller---oh smart feller---------no sometimes I think I'm just one step ahead of the kid I used to sit beside in public school who had to wear the hockey helmut at all times. I was going to try and catch up with you on Friday Jay but the king of the hill got in the way and I was pooped after Oswego and Delaware in two days (600 miles!!!!)
I was trying to find ACT's rules also but could only come up with Kawartha's. They encourage the ACT package but have other options for the 604 (weight penalties etc.) and limited late model participation but I can't figure out if the tour race there earlier this season was strictly by ACT rules. Jon Urlin, Pete Vanderwyst and Cole Powell from the London area ran the tour and I wonder if they have 609's????