so long story short i pulled my engine two seasons ago due to a cracked block. Got a new used engine with forged internals and put her back together, drained and refueled. Won’t go up on plane, hits 3,000-3,500 RPMS and is boggy, if i throw a few guys up in the bow or go out solo it will get on plane and max out at 4,000.
Taking a system designed for rectangular port heads and putting it on oval port means its getting more fuel then it needs, so should be running rich. Running rich also means less power.
Knowing that it use to do just fine with new setup helps but for me makes it also puzzling. I'm going to have to think some more
The only thing that has been changed is the block. The heads, cam and intake/fuel system are all from the original motor so nothing should be different unless the compression, bore or stroke are different from the new block and i don’t think they are.