Ok its been a year on the rebuilt motor in my boat lots of use no issues its an inboard with a 302 HO 1409 carb 20' Sham PH (asked on that site but looking for a bigger crowds opinion). Boat has never seen past 3500RPM while on the water in gear. It will snap past 4K out of gear just fine. I'm looking for thoughts on this. I have had various opinions ranging from "it seems fine just enjoy it" to "something's not right you should be over 4K on water in gear at WOT" Heres the deal:
Its almost like there is a limiter on the motor when it hits around 3300-3400 in gear on the water, and I can just hear the secondary's open around 3200. Have tried 3 different pitched props 13x11-13x13 stock is 13x13 all hit same RPM's within a 100 or so 3500 with 13x11 but did not feel right power wise (just top speed changes) 13x13 on there now load in the boat (400lb or 1000lb) does not mater still just hits 3300. All cylinder are firing and motor runs great lot of power. I just think there is more to be had but maybe not - speeds 30-32mph or so at 3300. I'm using timing light and digital tack to make sure of a correct reading. I'm cruising at 2600-2800 at 24-25mph gas consumption is fine.
Things I have tried/done:
New Malory electric distributor, plugs, wires, coil and alternator
Checked vacuum to timing adjustments - vacuum at idle is around 15.
New fuel system - filter, pump pressure is regulated at 6psi per Edelbrock (also tried pressure wide open at 11psi no difference)
Total timing is 30
The BW 1:1 trans is 1 year new
Bottom is clean but it is painted
What do you all think should I stop thinking about it and just go fish or is there something I'm missing?
Its almost like there is a limiter on the motor when it hits around 3300-3400 in gear on the water, and I can just hear the secondary's open around 3200. Have tried 3 different pitched props 13x11-13x13 stock is 13x13 all hit same RPM's within a 100 or so 3500 with 13x11 but did not feel right power wise (just top speed changes) 13x13 on there now load in the boat (400lb or 1000lb) does not mater still just hits 3300. All cylinder are firing and motor runs great lot of power. I just think there is more to be had but maybe not - speeds 30-32mph or so at 3300. I'm using timing light and digital tack to make sure of a correct reading. I'm cruising at 2600-2800 at 24-25mph gas consumption is fine.
Things I have tried/done:
New Malory electric distributor, plugs, wires, coil and alternator
Checked vacuum to timing adjustments - vacuum at idle is around 15.
New fuel system - filter, pump pressure is regulated at 6psi per Edelbrock (also tried pressure wide open at 11psi no difference)
Total timing is 30
The BW 1:1 trans is 1 year new
Bottom is clean but it is painted
What do you all think should I stop thinking about it and just go fish or is there something I'm missing?