The Honda, and Hot cams are drop in cams which mean you can swap them out with out changing anything else. With the Megacycle and WEB cams you may need to change valve springs, cut valve guides, cut valve reliefs in the top of your piston depending on which one you choose.

Honda Cams

Honda 2004-2005 HRC Cam - Part # 14110-NLZ-650
Really strong to top end cam, with a decent mid range, but lacks bottom end.

Intake Lift(inches): .390
Exhaust Lift(inches): .350
Intake Lobe Center (degrees): 110
Exhaust Lobe Center (degrees): 105
Intake Duration (degrees at .040"): 260
Exhaust Duration (degrees at .040"): 260

Honda 2002 CRF Cam - Part # 14110-MEB-670
A good all around cam, strong bottom and really strong mid range with a decent top end as well.

Intake Lift(inches): .380"
Exhaust Lift(inches): .356"
Intake Lobe Center (degrees): 106.5
Exhaust Lobe Center (degrees): 107
Intake Duration (degrees at .040"): 249
Exhaust Duration (degrees at .040"): 272

Honda 2003 CRF Cam - Part # 14110-MEB-770 <-------------Now is 14110-MEN-670
A good mid range cam.

Intake Lift(inches): .380"
Exhaust Lift(inches): .336"
Intake Lobe Center (degrees): 109
Exhaust Lobe Center (degrees): 109
Intake Duration (degrees at .040"): 249
Exhaust Duration (degrees at .040"): 262

Honda 2006-07 HRC & Honda 2005 CRF Cam - Part # 14110-NLZ-610
Really strong bottom with a decent mid range.

Intake Lift(inches): .374"
Exhaust Lift(inches): .313"
Intake Lobe Center (degrees): 248
Exhaust Lobe Center (degrees): 268
Intake Duration (degrees at .040"):
Exhaust Duration (degrees at .040"):

HotCams

HotCams Stage 1 - Part #1016-1
Excellent bottom end and midrange increase.

Intake lift (inches): .378"
Exhaust lift (inches): .343"
Intake lobe center (degrees): 106.5
Exhaust lobe center (degrees): 103.5
Intake duration (degrees at 1mm): 237.5
Exhaust duration (degrees at 1mm): 268.5

HotCams Stage 2 - Part #1024-2
Excellent midrange and top end increase, good all-around cam.

Intake lift (inches): .402"
Exhaust lift (inches): .343"
Intake lobe center (degrees): 106.5
Exhaust lobe center (degrees): 103.5
Intake duration (degrees at 1mm): 248
Exhaust duration (degrees at 1mm): 268.5

HotCams Stage 3 - Part # 1056-3
More top-end power than Stage 2. Will work well for TT and big bore/strokers.

Intake lift (inches): .409"
Exhaust lift (inches): .356"
Intake lobe center (degrees): 116
Exhaust lobe center (degrees): 104.5
Intake duration (degrees at 1mm): 251.5
Exhaust duration (degrees at 1mm): 265

Megacycle Cams

Megacycle X1 - Part # 108-x1
Race profile for increased mid to top end, must use race piston and valve springs. Intake valve pocket may need cut on piston.

Intake Lift(inches): .430"
Exhaust Lift(inches): .385"
Intake Lobe Center (degrees): 102
Exhaust Lobe Center (degrees): 106
Intake Duration (degrees at .040"): 266
Exhaust Duration (degrees at .040"): 282

Megacycle X2 - Part # 108-x2
Strong midrange / all-around. Must use race piston and valve springs. Intake valve pocket may need cut on piston

Intake Lift(inches): .412"
Exhaust Lift(inches): .350"
Intake Lobe Center (degrees): 108
Exhaust Lobe Center (degrees): 108
Intake Duration (degrees at .040"): 260
Exhaust Duration (degrees at .040"): 268

Megacycle X3 - Part # 108-x3
Full race cam max top end. Must use race piston and valve springs. Intake valve pocket may need cut on piston.

Intake Lift(inches): .435"
Exhaust Lift(inches): .385"
Intake Lobe Center (degrees): 104
Exhaust Lobe Center (degrees): 108
Intake Duration (degrees at .040"): 276
Exhaust Duration (degrees at .040"): 276

WEB Cam Inc.

613/812 - Part # 57-102
Performance profile to increase mid and upper end power. Higher compression recommended. Must be used with performance spring kit shortened valve guides and adjustable cam gears.

Intake Lift(inches): .381"
Exhaust Lift(inches): .357"
Intake Lobe Center (degrees):
Exhaust Lobe Center (degrees):
Intake Duration (degrees at .050"): 240
Exhaust Duration (degrees at .050"): 258

493/729 - Part # 55-462
Performance profile to increase mid and upper end power. Higher compression recommended. Must be used with performance spring kit shortened valve guides and adjustable cam gears.

Intake Lift(inches): .415"
Exhaust Lift(inches): .340"
Intake Lobe Center (degrees): 276
Exhaust Lobe Center (degrees): 288
Intake Duration (degrees at .050"): 252
Exhaust Duration (degrees at .050"): 252

208/921 - Part # 57-042
Race profile. Higher compression required. Must use performance spring kit, shortened valve guides and adjustable cam gear.

Intake Lift(inches): .408"
Exhaust Lift(inches): .340"
Intake Lobe Center (degrees):
Exhaust Lobe Center (degrees):
Intake Duration (degrees at .050"): 282
Exhaust Duration (degrees at .050"): 298

Mysto - Part # 57-072
The "MYSTO" cam designed for race use ONLY. Higher compression required. Must use performance spring kit, shortened valve guides and adjustable cam gear. Check all clearances!

Intake Lift(inches): .432"
Exhaust Lift(inches): .350"
Intake Lobe Center (degrees):
Exhaust Lobe Center (degrees):
Intake Duration (degrees at .050"): 293
Exhaust Duration (degrees at .050"): 296

Johnson Cams

400 - 375 (Little Johnson)
Strong midrange and top end.

Intake Lift(inches): .400"
Exhaust Lift(inches): .375"
Intake Lobe Center (degrees): 108
Exhaust Lobe Center (degrees): 108
Intake Duration (degrees at .040"): 266
Exhaust Duration (degrees at .040"): 284

430 - 400 (Big Johnson)
Top end drag cam.

Intake Lift(inches): .430"
Exhaust Lift(inches): .400"
Intake Lobe Center (degrees): 110
Exhaust Lobe Center (degrees): 110
Intake Duration (degrees at .040"): 274
Exhaust Duration (degrees at .040"): 289

If anyone sees a mistake or would like another cam added to the list, please PM me the info and I'll get it up ASAP.

Thanks,
Scott

I do not want change ANY of the above aforementioned information...... but I might 'add' just a little insight into some recent questions regarding the differences in HRC cams and how they perform between the 04/05 machines..and the 06/newer CRF based machines.....

again...all information is based solely on MY experiences....as I have no other information to go by.... other than the friends I ride with...and those machines I have personally worked on and upgraded...

first off.... as a GENERAL rule.... the 04/05 machines can handle a much more 'aggressive' bumpstick than the 06/newer CRF based machines can.... probably due to the porting layout... but either way... the 04/05 machines came stock with a much larger cam...as did the same year HRC cam.... a much more aggressive cam for these machines...

so, before I go any further.... a good 'rule of thumb'..and no, I dont routinely beat my woman with a stick the size of my thumb..... remember, I said ROUTINELY...lol but, the 04/05 machines can handle a larger cam than the 06/newer... meaning any camshaft designed as a MID or ALL AROUND cam in the 04/05 machines..is going to act more like a TOP END cam in the 06/newer machines.... vice versa... any mid level cam designed for the 06/newer machines...is going to act more like a low end cam for the 04/05 machines.....

with that being said...the HCII is one of the most popular and well rounded cams on the market..... they were however designed for the 04/05 machines...so when installing in the 06/newer machines.. they tend to be more mid/top end oriented than if they were installed in the 04/05 machines..... hope that makes sense....

the older 04/05 HRC cam was a TOP END oriented cam for the 04/05 machines...meaning it is very much so TOP END oriented for the 06/newer machines.... most people dont run this aggressive of a cam in the 06/newer machines....

the newer 06/HRC cam is an excellent all around cam for the 06/newer machines...it performs similar to this year machine..as the HCII performs in the 04/05 machine.... a STRONG emphasis on acceleration and 'all around' power...with a decent amount of over-rev....this is my PERSONAL choice for closed course/MX type racing.... the 'instant on' power of this cam, coupled with the newer FCR carbs and higher comp engines...is simply unsurpassed in 'out of the corner' acceleration.... when considering the user friendly/reliability of this cam....it is an excellent choice... there are 'other' cams out there..208 or similar grinds which can and will produce a bit more power.....but they often shorten the valve train life and use considerably more upgrades to function properly.... they do however work VERY WELL....

sorry, but I dont have a LOT more info to 'add' to this thread..... just remember when reading/speaking about cam threads....to understand the differences between the 04/05 machines and the 06/newer CRF based machines and their respective HRC cams...along with the design function of Hot Cams, Web, Johnson, and other prospective cam manufacturers as to what the purpose was of each of their cams and WHICH machine these cams were designed for.... this alone might help to determine which cam is good for YOUR machine...

jmho....Greg