Hey guys-

Do cams have "serial numbers" or markings on them, that would make a cam easy to verify?

I just bought one off the For Sale here, and the seller is pretty sure it is the cam he is representing it as and has offered 100% refund it is not, however, I was just curious as to whether or not there is an easy way to do this?

Thanks

Jeff

 

most use a grind number etched on the end, to start you can measure the lobes and get the lift info...other than that you would need to send it off to get "doctored"

 

Any idea what it costs to get one doctored?

 

i think i saw a post of around $60 at one time, you would need to call to find out....

 

Some have serial numbers. If you have the cam, post all of the writing etched onto the end. Someone might be able to decipher it.

 

I don't have the cam yet.. It's supposed to be a TR224.. I haven't paid for the cam just yet.. Parts of me are a lil' iffy about it..

 

I got lucky and the used Stealth II cam I bought off Ebay had Stealth II etched on the end. I also measured lobe lift just to be sure.

Re'

 

I sent a cam to comp to get "doctored" and it was free. I just payed for shipping. Contact someone at comp cams, cam dept.

 

Sweet.. I'll call Comp on Monday..

Thunder Racing TR224's are Comp Cams custom ground to Thunder's specs, right?

 

Meh the markings are not easiest way to identify the exact cam especially from Thnder. A very easy way to determine lift is to measure the base circle with some vernier calipers then measure the highest point of the lobe ( both if your looking for a dual pattern cam ) Subtract the base circle value from your high point value and muiltiply by 1.7 and this will give you your lift. Not quite a cam doctor which will give you duration and +- but it will make it easy if you just want to identify the cam. The old TR 224 were 5.81 lift but most of them are 5.63 lift now apparently due to the high amount of valve train noise the old ones made.

 

Mine says TR224 112 on the end of it.

 

Ah, well that makes it easy..

 

Just have the cam seller send you a picture of any writing on the end of the cam. Post the pic.

Many Comp Cams will have a "CC" etched on the end. BTW, I suggest Comp won't do a freebie check if it isn't one of their cams.

If it's a "custom cam" with 'secret" specs or if the marks have been ground off you are buying a 'pig in a poke'. Only the original designer knows what it is in that case.

Used cams are a lot like used brides.

 

It's supposed to be a TR224..

I'm gonna get the seller to look at it..

 

I'm running an older TR224 not so old to get the big lift but old enough to have a hand ground code number on the end. No TR markings or any size markings on it at all.