Re-powering 1972 SeaCraft 23'...F300?

[Riley@florida-re.com]

I enclosed the transom and am running the same 30" Armstrong bracket with a 300 Yamaha 4 stroke. The boat runs 50 WOT and loaded burns 2.8 - 2.9 MPG. I ran it from Ft. Pierce to Walkers Cay / Rosie's Place in grand Bahamas this past weekend and had a glass crossing on the way over. I burned 42 gallons in 118 statute miles getting there = 2.81 MPG. On the way home the bank was windy and 2 - 4 where I could only run 20 knots. When I hit the stream it flattened out and ran 38 knots to make up for lost time and burned 50 gallons at the same distance = 2.36 MPG. Overall the boat is unreal! runs perfect and is very well balanced. The scuppers stay dry even with three guys standing on the bracket.

I have no idea about the etec. I am just happy that I do not have to buy the excessive oil at $40 a gallon.