C1000

What are the cam specs for the 900sc merc engines? I do know that they are solid roller.

getrdunn

iTrader: (7)

The solid roller ones come into play in the 950-1075 sci engines. I will double ck however I am pretty certain the 900 sc still used the old original flat tappet cam.

getrdunn

iTrader: (7)

Looks like it might be the same as the sci specs.

900 SC, [email protected], 252, lift is .672
Exhaust@ .050. 257, lift is .672


I know these are the same specs are what I got from a member on the 1075 sci and do believe the 950-1075 sci all have the same solid roller.

getrdunn

iTrader: (7)

For some reason I thought the 900 was different but evidently was wrong according to another post that provided the 900 specs. You can order the cams from bullet.

MILD THUNDER

iTrader: (3)

800sc used a flat tappet hydraulic. 900sc was a solid roller.

getrdunn

iTrader: (7)

Correct. Did 900 sc use same as 950-1075 sci roller though?

getrdunn

iTrader: (7)

i copied and pasted 900 sc cam specs from another thread. Those specs are the same as what I have for 950sci-1075sci. So evidently 900"sc" - 950"sci"/1075"sci" are the same. If anyone knows any different please post.

mike tkach

iTrader: (3)

i did not know merc had a sc950,i thought sc850/1075,and the sc900 the op is asking about.

MILD THUNDER

iTrader: (3)

The part #'s for the camshafts, are not the same in merc's parts diagrams, so I would say, no , the 900sc carb engine, did not use the same camshaft , as the 1075 EFI.

The 900sc's were known to be valvetrain eaters. I wanna say they had something like 714 lift solid rollers. They used conventional rockers, basically old school blown big blocks like alot of us have. Nothing fancy.

Personally, If I was rebuilding a 900sc merc, I would go for a milder camshaft setup .

getrdunn

iTrader: (7)

Your absolutely right Mike. Not sure why I had 950 on the brain other than having vertigo for a week now (Not fun btw) I dug into this a while back for some personal information a while back but evidently screwed up on the 950sci rather meant 850sci. Regardless if op does a Google search on 900sc cam specs there is a link to OSO dating back to 2002 with above posted specs for 900sc.

Not much info on any of those cams going past the old 525-800sc hyd flat tappet .559 lift cam that was used forever it seems.

There are a few things I'd like to add but don't want to confuse OP more than I already have.