Currently building a 45" (60hp) engine for a river boat for my nephew. Have been out of the loop for a few years so I am going to need & really appreciate some help. Have a '100' block, crank, etc, 15" mid w/ full shift foot. Boat is 13 ft, glass, flat w/ small pad @ rear. @ 250 lbs.
Plans are to bring all ports in block to map on apba spec sheet, add finger ports in block & pistons, & add low water pick-up to foot.

Questions are: 1.could someone please point me in the direction of what port timing will work on a little heavier boat,.2. what cc will work in head ?
recomended deck height ? 3.tuner length . 4. ign timing. who has best nose cone / water pick-up for this foot (nitro). What kind of rpm should I be looking for.5. Prop selection will come later.

I know these questions are a little intrusive to some as far as revealing your secrets, but we will not be racing against any of you guys, we only want to be "respectable" on the river.

thanks:

lawrence Thornton