anyone know what cams these are?

[Guest]

I have a set of high lift cams for a gs1000 that I am trying to get some more information on.

the intake cam has the following markings:

CWC
J 26
C1
D1
EP69
stamped CM S4 (cam motion?) on end of shaft

Base circle: 1.110 lobe: 1.530
subtract the two and you get a lift of 0.420?

The Exhaust:

CWC
G 1
C2
D2
EP69
Stamped CM S7 on end of shaft

Base Circle: 1.060 Lobe: 1.485
Lift of 0.425?

[rapidray]

I don't know who made them but you are correct on the way to measure the lift. Those would be good street cams for a 1000 or 750 8 valver. Ray.

[almarconi]

I know that CWC makes camshafts for cars and light trucks. Not sure if they make them for motorcycles. There website is www.textron.com , may be the same company. The CWC could be the name of the foundry that cast the cam shafts. From what I can recall CWC stands for Campbell Wyatt and Cannon or something close to that.

[Guest]

CWC is the billet manufacturer. E69 is the billet part number. Those cams are Cam Motions.

[TeamDar]

Cam Motion S4: .420" lift, 269 dgrs @ .040" lift, 262 dgrs @ .050" lift.
Cam Motion S7 .429" lift, 272 dgrs @ .040" lift, 266 dgrs @ .050" lift.

You need shim under buckets for the S7. Dar

[rapidray]

Dar, why would the .009 difference in lift require shim under on a street bike? Those are pretty small cams in my book. I am only curious, not looking to argue. Ray.

[TeamDar]

Your actually pushing it at .425" but I have had good luck with that lift. Web used to say .425" was safe but they don't anymore. Cam Motion recommended shim unders with the S7. I guess if you don't spin the motor too high you could get away with it. With the reduced base circle you will have a thick (heavy) shim on top. Dar

[Guest]

Thanks guys!

I already have a bigport head with shim under buckets. Planning on selling this stuff to fund my 1166 build