4.3l motor build
I have a 20 footer with a 4.3l merc and was debating building an Aluminum small block to go back in it or rebuld the 4.3. Has anybody ever built a 4.3L with 300 plus hp?
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Not enough reasonably priced or available parts to make a buildup in 4.3L a smart move in my opinion. So much available for the small block its a better call and more HP per pound avialable plus the bigger torque numbers needed on boats. As for aluminum small block, the expense of the aluminum block vs iron blocks is not justifiable also, just go with aluminum heads (reasonable cost) to get the small blocks weight down.
Best Regards, Ray @ Raylar |
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Like Raylar said. Dump the 4.3 and install a 350. You will never be sorry.
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Originally Posted by 4angels
(Post 3031062)
I have a 20 footer with a 4.3l merc and was debating building an Aluminum small block to go back in it or rebuld the 4.3. Has anybody ever built a 4.3L with 300 plus hp?
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Rookie:
This is going to be a marine endurance performance engine in a boat, when are you guys gonna stop trying to take articles about engine builds out of hot rod marketing magazines and try to apply them to marine endurance engines????? The water ain't no drag strip nor streetrod venue! Still always amazes me how many successful crossovers there are from this line of logic NOT! Best Regards, Ray @ Raylar |
No replacement for displacement.
Drop in a 350 |
i cant remember were i saw it but ive seen a bowfishing boat with a 4.3litre jetdrive that made 500hp. probally wasnt reliable
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thank you very much for the info
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