Thread: Big Cam Really Low Vacuum?

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Originally Posted by 4speedTerror

ok something you said REALLY BOTHERS ME!!!! Your engine guy should ALWAYS give you a cam card with all the specs of your cam. What if you need new pushrods? How are you going to know what you need. And that goes for EVERYTHING in your valve train. So first of all I would slap him around and DEMAND the cam specs. Even if he grinds his own custom cams (which i HIGHLY HIGHLY doubt)

Ok and the idle question is simple.....If your idle is already low at first start up (cold start up in the mornings), then the longer you drive the car, the hotter the motor gets...which makes your oil thinner and thinner. So if you have had an idle of 700rmp in the morning and your oil pressure was 50psi, by time your motor is nice and hot, your oil is much thinner than in the morning. So now of course a thinner liquid will move faster. So your oil pressure falls. And for me a low oil pressure, and an aggressive cam makes me nervouse. I have oil restrictors and all that, but anything that is "splash" lubricated, I am going to make sure it is getting "splashed" very well...lol

Well, it's an overhead cam, so no pushrods. And this engine doesn't rely on splash lubrication (it's a hot rodded Mercedes...yes, I know, I'm nuts).

The cams were custom ground...I suppose when I need a replacement cam I can just stick it in a cam doctor, no? He did kinda tick me off with that...as well as some other things he did.

Originally Posted by marlinspike

Well, it's an overhead cam, so no pushrods. And this engine doesn't rely on splash lubrication (it's a hot rodded Mercedes...yes, I know, I'm nuts).

The cams were custom ground...I suppose when I need a replacement cam I can just stick it in a cam doctor, no?

I guess I could of asked what you were running...lol...

I just figured conventional v8....lol