Merc500EFI/500Buldog
 

I would like to what is the difference between a 500 EFI and the 500 Bulldog, to what I know both as 470HP and what else?

Re: Merc500EFI/500Buldog
 

The Bulldog is a 540 Ci the 500 efi is a 502.

The bulldog is blueprinted and balanced the 500 efi is not.

The bulldog is N/A and the 500 is EFI.

The bulldog is a great motor, so is the 500 EFI just go about making 470 HO different.

Re: Merc500EFI/500Buldog
 

Do you know if in 2001 both of them were Closed Cooling ?

Re: Merc500EFI/500Buldog
 

Neither one was ever closed cooling

Re: Merc500EFI/500Buldog
 

you might be thinking of the 525efi which is closed cooled.

Re: Merc500EFI/500Buldog
 

Bulldog's also had manley rod's, lunati crank, 500efi's are gm rods and crank.

Re: Merc500EFI/500Buldog
 

The hp500efi makes 500 HP. 470 Prop Shaft HP.

For what its worth.

Re: Merc500EFI/500Buldog
 

Since no one mentioned it, The bulldog was a tall deck block, the 500 EFI is a standard deck.
Gary

Re: Merc500EFI/500Buldog
 

why build a 540 with better parts with the same hp?

Re: Merc500EFI/500Buldog
 

3 things I can think of.

1. The limitations of the Bravo One drive.

2. Wouldn't want to trump the 600SC :rolleyes:

3. Mercury overbought HP465 cams from crane,
and needed to get rid of them :rolleyes: :D :D