Price and what it takes to convert a 502 Carb motor into a 525SC???

First I think the Merc 525sc that you are thinking of is a 454 ci then add blower. I think you need to ask yourself how much HP do you want from your 502 carb, and if you really want a blower? Some engine builders offer packages to build your 502 up to around 600hp NA.

WILL

Cheaper to add 525efi systems instead.I just happen to have to sets for sale in the swap shop.$6300 includeds shipping.The only thing i know you'll need is a fuel pressure sending unit.

What does that all include? Thanks for the Help.

The intake,fuel injection system,dist.,wires,ecu,fuel pump,new fuel filter,fuel water seperator,fuel cool system,even the sticker that says 525efi thats on the top of the intake.Call me if you need anything else or email me your #.540-400-5536

I've got two 525 efi's long blocks 2003 with 201 hrs.
Ck the classifieds ! Rebuild 1 & buy the parts from docmanrich & you will have about 540 hp on 87 octane

LS

Johnny call Leon he has some new combinations 600-650hp very reasonbly priced, natuarally asp., pump gas ,run forever. I had some of his 509s in my old 35 ,ran for years and never touched them, this will be cheaper and faster than trying to do the 525s.

Lucky you should buy my systems and sale 2 complete motors.I'll give you a heck of a deal.

I did the swap for about 5 grand complete..love it ..runs excellent !!

You should buy my blocks I'll give you a better deal !