I've got an old camshaft of which I'm trying to the specifications to. From what I've read, it seems to be a Crane Cam Core with a Chet Herbert grind but in searching there were two cams with two different specs that used the 689356 number so I'm trying to verify the cam information. Please, can someone help me in finding the original cam specs. Also, this cam is specifically for a Big Block Mopar Wedge engine(3 bolt).

The number on the rear of the camshaft is: 689356(I believe this is the part number) 8A2A(I believe this is the heat treat batch number)
The number on the front of the camshaft is: CD274-06 then 274 is listed again by itself. Also No. 4586 is on the front of the cam as well.

Old Cam Dynamics I would guess.

What a coincidence, i was clearing the back bedroom the other day and found a cam i bought 2 or 3 yrs ago, it's a Herbert 689356 D6C roller cam, the card says .625/.625 at 1.5
275 int,283 exh at .050, lobe center 108, center line 107, at .050 int opens 36 close 59 exh opens 72 close 30 valve lash .025/.025
Mick

If it's a roller, here's my guess....
CD - cam dynamics
274 - duration @ .050
4586 - lobe lift, .4586"
06 - 106 lsa

More than likely a single pattern cam.
It would be easy enough to measure the lobe lift to verify it was close to .458.

If it's a flat tappet cam, then it's a judgement call as to whether the 274 is duration @ .050 or advertised, and I think I would let the lobe lift be the deciding factor.
If it was like .300-.310 it's more than likely advertised duration, if it's like .340+ then it's likely duration @ .050.

This is a Cam Dynamics camshaft for a Chrysler B/RB, ground on a Crane 8620 steel billet core (that's the 689356 number). Recommended valve lash is .030" at operating temperature. Advertised duration is 318 degrees. Lobe lift is .440", resulting in a gross valve lift of .660" with the standard 1.5:1 ratio rocker arms. The .050" tappet lift duration is actually 278 degrees. Cam timing at .050" is: intake opens 35 BTDC, intake closes 63 ABDC, exhaust opens 67 BBDC, exhaust closes 31 ATDC. Lobe separation is 106 degrees, with 2 degrees of advance ground into the cam. This was a popular single 4bbl Super Stock cam in the late 1970's -early 1980's. Regards, Chase