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-   -   575 sc (https://www.offshoreonly.com/forums/general-q/314776-575-sc.html)

JDB1981 07-06-2014 12:24 PM

575 sc
 
Does anyone know the cam spec's to the 575 sc carburetor motor

JRider 07-06-2014 02:03 PM

You mean 525sc? or 575sci with dual throttle body setup?

JDB1981 07-06-2014 02:54 PM

Didn't they make a 575 carb I have some motors I am building with B&M 250

Griff 07-06-2014 03:19 PM

No such thing as a 575SC.

There is carbed 575HP that Merc made a few back in the late 80's/early 90's but they are rare.
There is a carbed 525SC and there is a 575SCI with dual throttle bodies.

BUP 07-06-2014 04:15 PM

Agree about 575 SCi. and some added info. Merc Racing in the 2000s - want to say 2002 or 03 thru 2006 I know had a HP575 SCi rated at 575 hp based off an 8.2 that had a 256 CID Holley / Weiand Super Charger with TBI injection using a MEFI 3 controller.

JDB1981 07-06-2014 04:16 PM

It was the 600 sc does anyone know the cam spec's

JRider 07-06-2014 04:18 PM

Whatever the case you don't want any of those cams.

Young Performance 07-06-2014 04:51 PM

The cam in a 600 sc is 240/240 .559/.559 110*
It's the same cam that was in the 575 SC
Eddie

JDB1981 07-06-2014 05:02 PM

Thanks

JRider 07-06-2014 05:26 PM

If you are interested I have one for sale from my 575sci.

paintman 07-06-2014 07:20 PM

Whats wong with the cam

JRider 07-06-2014 08:40 PM

Well, flat tappet is the first drawback. With today's low zinc content oils roller cams are king. They free up hp and allow more aggressive ramping. I am not an expert bye any means btw...but I am a technical guy and would not attempt to steer you wrong. However I would not attempt to spec a cam for you.

chuckpp 06-15-2015 05:00 PM

Just wondering what would you use instead of the flat tappet cam want to install hyd roller does crane make a direct cross to roller..

tks chuck

575sci

Griff 06-16-2015 01:17 AM

There are lots of proven upgrade combo's for the 575SCi.

I would probably lean towards something close to the 525EFI cam. Its a Crane 168741 ground on a 114 lob sep.
I would call some marine engine builders with experience bumping the hp up on 575SCi.


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