roller cam is Silver in color?

[davinci50]

Is this cam treated with something? The entire cam including the lobes is a dull silver in color.

 

[S10xGN]

Is this cam treated with something? The entire cam including the lobes is a dull silver in color.

Looks like a cast iron cam to me. What are the specs? I've never seen a cam with lobes on a base circle nearly the same diameter as the cam. It's either a "donkey-d!ck" cam or has been reground several times!

 

[DR BOOST]

is that the infamous budget roller cam?

 

[S10xGN]

is that the infamous budget roller cam?

I don't think so, I've got one of those somewhere (haven't seen it in years) but I sure don't recall it having literally no base circle for the lobes.

 

[davinci50]

Finally got around to investigate further. Its a Lunati 113 RR-218-215 .520 I .505 E
Still no idea about the coloring. Waiting to hear back from lunati. They said its normal to be ground close to base circle to achieve certain lifts.
I think i'm going to roll with it, anymore thoughts?

 

[Tom Walker]

maybe Nitrided (sp?)

 

[The Radius Kid]

maybe Nitrided (sp?)

Eeyup.

 

[davinci50]

At first I thought nitride only turned metal Black, But have since learned it can make a dull Gray. So I guess it IS nitrided? shiney metal where the cam bearings ride and dull gray on lobes and core.

 

[bison]

Looks like it would work well in an application looking for 700hp with a good flowing set of heads and a 1.65 ratio assming the lift numbers are with a 1.55 ratio