Originally Posted by xlint89 (Post 4747507)

I honestly thought someone would have suggested selling the HP 500 and just buying a 540 as opposed to conversion.

A lot less work and prob cost less in the long run too.

https://www.ebay.com/itm/MerCruiser-...QAAOSwjL5ZFdX3

https://www.ebay.com/itm/540-Bulldog...IAAOSwnK9ZVqxK

https://cleveland.craigslist.org/bpd...145891904.html

Just curious, what did you buy the 500 HP for? I've got a 502 MAG (black engine) that I would ultimately like to upgrade and a 500 HP EFI would be what I'd want or replicate for reliability.

Originally Posted by SABER28 (Post 4747510)

ebay? thats a risk. the "540 bulldogs" are not bulldogs from mercury, not even the correct stroke. bulldogs had lunati cranks and manley rods too.

find a good local builder, not ebay.

Originally Posted by riverrunner242 (Post 4747508)

It came with the boat. That's why I'm unsure what route I'm taking. I think I'm just building a carb 540 and selling what I dont use

Originally Posted by SABER28 (Post 4747510)

ebay? thats a risk. the "540 bulldogs" are not bulldogs from mercury, not even the correct stroke. bulldogs had lunati cranks and manley rods too.

find a good local builder, not ebay.

Originally Posted by Griff (Post 4747521)

Your 500efi is worth more complete. You'd be better off to sell it complete if you build a 540 carb engine

Originally Posted by Griff (Post 4747521)

Your 500efi is worth more complete. You'd be better off to sell it complete if you build a 540 carb engine

Originally Posted by F-2 Speedy (Post 4747754)

you sure the blocks not damaged ? where did the crank break, very odd I dont think Ive ever heard of a 500 efi breaking a crank, did it hydraulic a cylinder