i have same boat just put new motor in few weeks ago getting 4500 rpm speed not where it should be maybe 40 running 350 5.7 vortec engine edelbrock carb and intake alpha one gen 1 what prop size are you running i have aluminum mercury spit fire 4 blade 14/17pitch also have trim tabs trying to narrow this dam prop down already also have through hull exhaust
i have same boat just put new motor in few weeks ago getting 4500 rpm speed not where it should be maybe 40 running 350 5.7 vortec engine edelbrock carb and intake alpha one gen 1 what prop size are you running i have aluminum mercury spit fire 4 blade 14/17pitch also have trim tabs trying to narrow this dam prop down already also have through hull exhaust