need advise, on replacing a 02 vortec 5.0 with 5.7

[alex3012red]

i have a cruiser 23' with a mercruiser 5.0 vortec engine 2 barren carb, bottom end is shot (2 windows on block) top end is good, my question is if i put a 5.7 vortec engine from a truck, suv, besides the plugs, can i still use the 2 barrel carb/intake? or it wouldn't be enough for the 5.7? do i need a cam too? can i use the 5.0 cam? or leave te truck/suv one? thanks in advance
trying to keep the cost down on fixing the boat, but on the other hand want to do it the best as possible with limited resources.(5.7 complete used $ 500)

 

[Scott Danforth]

Leave the truck cam

You need marine head gaskets and a marine circulating pump.

Carb will be fine for stock motor, however I would change cam to a comp cams XM270-HR and go with a 4 barrel intake and 650cfm 4 barrel

 

[alex3012red]

thanks, for the quick response, will do the head gaskets and pump, for now ill leave the intake, and shop for a 4 barrel carb and intake, later on the line, just want to get her on the water for the rest of the season..

 

[alex3012red]

Leave the truck cam

You need marine head gaskets and a marine circulating pump.

Carb will be fine for stock motor, however I would change cam to a comp cams XM270-HR and go with a 4 barrel intake and 650cfm 4 barrel

2 bolt or 4 bolt main or either one?

 

[Scott Danforth]

99% of boat motors are 2 bolt. Unless your building a stroker or blower moror, onlt a 2 volt is needed