meaning the motor is low? I think the cav plate is normally even with bottom of hull. Unless it is set back.
If the motor is on the low side then you can rule it out and get a prop that bites better in aerated water. the rev 4 is excellent for this. A lot of folks talk chit on 4 blades but...
Try and enertia or revolution 4 . similar to you I couldn’t trim up much until I went with the Rev 4, now can use entire trim range . Would also verify motor height isn’t too high.
the new long block I bought in 2016 is just about x2 now.
Hard part is if there is a decent machine shop you will be waiting for them. The machinist had my block and heads for my 65 GTO for a year before they were done.
Look for rust on the valves that might indicate water coming in through the exhaust. You need a long machinist rule and feeler gauge to see if the block is flat. Did the engine get hot? Might also look for lean condition as it can tulip valves.
Take the heads to a machine shop as Lou mentioned...
I dont think it matters dealers choice. On my set up the lags were easier to get to with a wobble extension due to a side panel that made the bigger nuts harder to swing off.
Not sure on the stator driven set up but this 1974 Evinrude is a coil eater. I went through everything but the coils as I saw spark on the plugs, did the coils last which I may have been able to skip the carb rebuild.
When I did my repower and used the gap tester on the TBV then I saw what a...
i have become fond of the spark gap tester for this so you can see how strong the spark is vs just there.
ten or so years back went through an older evinrude outboard. Last thing I replaced was the coils - this was after fuel pump, carb rebuild, points and condensers... I had spark showing but...
I did mine by the lag screws as generally they are easier to get to in the boat. You need to do an alignment regardless of marking the bolts even with same engine mounts etc I wouldn't trust is goes back in aligned...
yeah runs great is a joke.. 3.0s are no the smoothest idling engine but if it has good compression and makes decent oil pressure on a test stand likely needs a tune up and carb rebuild
So you kept your old ratio drives? Typically when you go up in power you will need more pitch. I did a 4.3 to 5.0 repower kept the 1.81 4.3 ratio drive and went up 2" in pitch from what was on there.
Get through your break in and see what you get at WOT before doing anything. Make sure your...