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can we list of all the carbed blue motors ever built?????

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Old 04-23-2011, 07:22 PM
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420/465/500/525SC/500 Bulldog/600SC/800SC/900SC/1000SC

That's all I can think of & they were all black pre-1992/3 I think.

The HP465 was a bad-a$$ motor. It did have a very snotty cam, although it was not a roller-cammed motor it did have Crane Gold roller-rockers and 2.25/1.88 valves with a 800 Holley carb.
We had one in a 226ES Baja back in the day. Nice motor. Got lots of attention at the docks with the cam it had.

There was a 800EFI also that, along with the 1000SC was sold as a "race only engine". The 800EFI had a Hillborn style injection setup on it and Pontiac style heads (I think)

Last edited by JasonSmith; 04-23-2011 at 07:24 PM.
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Old 04-23-2011, 07:28 PM
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Originally Posted by sea2jet View Post
What is the difference between the Blue and Black motors? The Blue motors are Mercury Racing, did they use better parts? Did they make more horsepower than advertised? My new boat is coming with Blue HP500 carb engines.
Merc went from black to blue in the early 90's on the Merc Racing stuff (HP & SC series). They are all built in FonduLac, WI.
All the same stuff in a black HP500 vs a blue HP500.
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Old 04-23-2011, 09:44 PM
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HP575 was carbed NA engine and only made for a couple years.
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Old 04-23-2011, 09:48 PM
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Old 04-23-2011, 10:47 PM
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When did they come out with the 1000SC motor and when did they stop making it. Also what makes it a race motor what does it have.
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Old 04-23-2011, 10:48 PM
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Originally Posted by BBB725 View Post
465hp - 502 ci and they built a limited number of 450hp - 454 ci
Yep, you're right. I built two 32s with the 450s. Found the pictures in my pile. They ran as good as the 500s.
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Old 04-23-2011, 11:24 PM
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383 Scorpions...Did the first ones have carbs?

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Old 04-24-2011, 10:09 AM
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Sydwayz, the 420's and 440 Cyclone's were all black, 425's were rare, but I believe had some blue, 450's had blue valve covers, intake, power steering pump, alternator, pulleys (some blue some black), and carb (just like HP500). The 465 had blue valve covers, carb, black intake. Yes, the 465 was a awesome sounding motor. I remember in 1993 driving a new 22' Velocity with one, man what a rocket. The old school 575 was a pretty mean motor too with the solid lifters and Stellings. Ah the memories!!!!

Last edited by Hessdk; 04-24-2011 at 10:15 AM.
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Old 04-24-2011, 10:38 AM
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is the NA575 the highest horsepower pump gas NA motor mercury had built? I know they build the supercat motors but they are pure race motors....
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Old 04-24-2011, 01:47 PM
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AO Razor, what was the 700SC???? Never heard of it before??
Sorry about the 700sc. Got things confused. I have edited the post.

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Originally Posted by madhatter42 View Post
Correct me if I'm wrong but wasn't the 700SC a hawk power plant...

I've surely never seen one..
Yep. I remembered the prop hp of the 800sc, and got it into my head that there was a 700sc from merc. My bad. Sorry guys.

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HP575 was carbed NA engine and only made for a couple years.
Yes, as posted earlier. A 540 cid. motor. When I get back from our vacation, I'll find the specs if you are interested.

Last edited by A.O. Razor; 04-24-2011 at 01:50 PM.
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