Cam Specs 800SC and 900SC
Cam Specs 800SC and 900SC
03-06-2002 | 07:12 PM
#2
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Joined: Jan 2001
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From: hamilton ,ohio USA
These came second hand from Crane,
800 SC, Intake and Exhaust, @ .050, 240 and .559 lift.
900 SC, [email protected], 252, lift is .672
Exhaust@ .050. 257, lift is .672
P.S. The 800SC and the Bulldog HP 500 uses the same cam. Don't quote me on these numbers, but I believe these to be correct.
800 SC, Intake and Exhaust, @ .050, 240 and .559 lift.
900 SC, [email protected], 252, lift is .672
Exhaust@ .050. 257, lift is .672
P.S. The 800SC and the Bulldog HP 500 uses the same cam. Don't quote me on these numbers, but I believe these to be correct.
03-06-2002 | 11:56 PM
#4
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Joined: Oct 2000
Posts: 4,541
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From: Western Michigan
For someone who KNOWS FOR SURE...How many cubes is the Merc 800SC? And what are the cam specs and lobe seps on this engine? I'm interested in knowing because I know of a boat that has the Merc 800SC's "WAR HAWK" (41' Apache) in it and boy does it ever have a SWEET idle.
03-07-2002 | 12:21 AM
#5
Charter Member #30
Joined: Oct 2000
Posts: 2,164
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From: Bellville,Oh
Call Crane and tell them you wan't the cam# for the motors in question. Then go to the cam card section of their web sight and print the card. I'm going throught this right now trying to come up with a cam for my motors.
Did you know that the 500 carb cam and the 500 efi cam are very different but the motors make the same HP. I'm still trying to figure that one out
Did you know that the 500 carb cam and the 500 efi cam are very different but the motors make the same HP. I'm still trying to figure that one out
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03-07-2002 | 06:23 PM
#6
Ginger or Mary Ann?
Joined: Oct 2000
Posts: 11,030
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From: L
According to my "Mercruiser High Performance Service Manual #3" for my 1994 motor from Mercury. Can't speculate on later yrs.
The 800SC is a 572ci.
4.50 Bore x 4.50 stroke
7.5:1 CR
cam is Hyd. non roller (also used in the 600SC based on the 502)
lift at valve w/1.7 rockers .559/.559
lift at cam .329/.329
duration @.050 300/300
Take it for what it's worth. No other cam specs are listed.
The 800SC is a 572ci.
4.50 Bore x 4.50 stroke
7.5:1 CR
cam is Hyd. non roller (also used in the 600SC based on the 502)
lift at valve w/1.7 rockers .559/.559
lift at cam .329/.329
duration @.050 300/300
Take it for what it's worth. No other cam specs are listed.
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Some people are like Slinkies - Not really good for anything, but they
bring a smile to your face when pushed down the stairs.
Some people are like Slinkies - Not really good for anything, but they
bring a smile to your face when pushed down the stairs.
03-07-2002 | 06:38 PM
#7
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From: Western Michigan
Hmmmm......300/300 duration @ .050 sure doesn't sound right. It would fall right on its face....I don't think you could even get the thing to idle below 1500rpm. I think we need to look at it again. 
03-07-2002 | 06:43 PM
#9
Ginger or Mary Ann?
Joined: Oct 2000
Posts: 11,030
Likes: 9
From: L
Here, look for yourself. (holding manual up to monitor)
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Some people are like Slinkies - Not really good for anything, but they
bring a smile to your face when pushed down the stairs.
Some people are like Slinkies - Not really good for anything, but they
bring a smile to your face when pushed down the stairs.
03-07-2002 | 06:53 PM
#10
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Joined: Mar 2001
Posts: 2,558
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From: ohio
My Merc manual has some strange cam info in it too. Im not at home so I cant read it exactly but they had some numbers like 396 degrees of duration. Figure out how they did that! I think they intentionally put in misleading info so people have to buy the cams from them, or they have a real bad proof reader.
