numbers on cam gears???

[maroon81GS]

Can someone tell me what the numbers stamped on the cam gears mead? I've tried the "search" tool with no luck. I have several GS1000/1100 cams...most have the same numbers, some are different. I'm assuming they are a cam lobe profile measurement (lift or duration), but I can't find the conversion to use that results in a meaningful number in mm, inches, or degrees? :? Thanks

[TheCafeKid]

Can someone tell me what the numbers stamped on the cam gears mead? I've tried the "search" tool with no luck. I have several GS1000/1100 cams...most have the same numbers, some are different. I'm assuming they are a cam lobe profile measurement (lift or duration), but I can't find the conversion to use that results in a meaningful number in mm, inches, or degrees? :? Thanks

I am not sure if its cam lobe durration or the timing on the actual SPROCKET itself. Makes more sense to me for it to be the sprocket part number/timing, because i have cams that are completely different, one set from the 16v 750 and the other from a 8v 750, yet both have the same cam numbers. I do know that most that ive seen are numbered 451 on the exhaust and 450 on the intake, or vice verce (cant remember which).

[maroon81GS]

numbers on cams gears?

Anybody else have some knowledge about these numbers? I have some GS1100E that are 451 Intake / 470 Exhaust. A set of 1982 GS1000S Katana cams are 490 Intake / 470 Exhaust. What do these numbers relate to, specifically. (degrees duration, lift in inches or mm, etc...?) Can't find a coversion that makes sense....thanks

[rapidray]

They are #s stamped by Suzuki when they are cores so the factory knows what bike they go to. The #s have NOTHING to do with lift or duration. Ray.

[rphillips]

The gears can't affect the lift or duration, but can change the cam timing. Just a thought, lay your #450 intake gear on top of your #490 intake gear, line the bolt holes up exactly, then look at the teeth & see if they are lined up perfectly. If the teeth are aligned perfectly, the cam timing will be the same with either gear. If the teeth are offset a little, advanced or retarded, the cam timing will be different from one gear to the other. Just my opinion!!!