if you have disc brakes actuated by the surge head, a blue wire going to the reverse lock-out solenoid is used and you have a 5-wire plug.
trailer wiring colors are standard.
you are going from an obsolete motor with a mercruiser to an obsolete motor with a volvo that you have to redo your transom to fit?
find a 1996 or newer mercruiser 4.3 with a A1G2 drive or a 1996 or newer Volvo with the SX drive.
dont keep looking at old obsolete stuff.
you have slightly low pressure if your gauge is correct.
you are flashing a MAP sensor code
you havent verified the neutral safety switch.
you added a second fuel filter in-line with the stock one which doubled the inlet restriction
have you checked compression?
running in neutral on the...
as far as value. that was covered above
I have a 59 vintage gale that has sentimental value. so that will become wall-art. the two early 50's Mercs (Mark 7 and Mark 20) were sold for about 200 for the pair after having listed for almost a year.
I would stick with aluminum. Edelbrock 2519 is the dual alloy (bronze water passages) like the OEM Volvo/Ilmor intakes.
flywheel is same for 305/350 after 1986
are you running a heat exchanger, or just raw water cooling. if raw water, do you want cast iron? or dual alloy aluminum? 2-barrel or 4-barrel?
there is no HP limit on boats with I/O's, only on boats with outboards
only if you convert to fuel injection. the block and heads dont have a clue if its a carb or EFI up stream.
the vortec cylinder heads just require a different intake than the earlier SBC's since you have to buy two new intakes anyway as yours were in salt and most likely rusted beyond use.
depends on what the bore gauge says. however my guess bore and hone.
how does the bores look where the port are?
the piston is missing parts above the compression ring.
