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Old 07-11-2010, 07:54 PM
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SBC Cam Identification?

Greetings, I just picked up a roller cam for a SBC at a swap meet. yes, I know, buying a cam with no specs is a gamble. I beleive it is a marine cam regrind. The guy I bought it from said it was for a boat but he didn't know anything else about it. It is new in a brown box with cosmoline type coating on it, only markings are the Insignia on the box that says "remanufactured" and the numbers "1801 R" on the cam. It is billet, with a lobe for a mechanical fuel pump and a stepped front journal for a retaining /wear plate. Possible mercruiser cam? Any help identifying this cam would be appricated, thanks in advance for your help.

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Old 07-11-2010, 09:21 PM
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I Don't know but let's hope "R" doesn't mean reverse rotation, which some boats use on one engine use when running 2 engines. you could go really fast in reverse with an engine rotating the other way. hahaha

plus, boat engine cams tend not to use much lift or duration. Not a good choice for a street engine.

If you are looking for a cheap cam then check out and get a summit racing brand cam (brown box). cam and lifters for around 100.00.
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Old 07-12-2010, 07:07 AM
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Looking down the cam from the front, or timing gear end, the second lobe has to be to the LEFT of the first lobe (et cetera) for the cam to be a "normal" rotation cam.

Good luck, you may need it!
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Old 07-12-2010, 11:05 PM
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Cam I.D.

Well, I checked the cam against a stock tp-274 cam. It is not a reverse rotation cam. I assume the "R" stands for roller. I guess I can place it into a block with timing chain attached to crank and use a degree kit to check the specs. Thanks for the info concerning reverse rotation, I hadn't thought of that, however it is a relief that it's standard rotation.
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