107" and 114" M8 Aftermarket Cam Shaft Comparisons

[Free Bird]

The following cams were part of this test:

Andrews M460

Cycle-Rama 460

S&S Cycle 475C

Wood Performance-WM8-22X

Zipper's Red Shift 468

Wood Performance WM8-222

The first dyno chart below has all six of the camshafts overlaid to show their respective torque and horsepower relative to this particular set of components. All of the camshafts in the test offered significant performance increases over that of the stock camshaft.

Andrews M460 Camshaft

Valve Train Noise: Very Quiet

Cam Lope at Idle: Moderate

Description: This cam makes nice broad power. It comes on relatively early and pulls well to the right side of the curve. This cam placed in the middle of the test.

Cycle Rama CR-460 Camshaft

Valve Train Noise: Very Quiet

Cam Lope at Idle: Moderate

Description: The Cycle Rama 460 made very good low RPM power (the second best in this test), it also provides a very broad power curve with good upper RPM power.

S&S Cycle 475C Camshaft

Valve Train Noise: Very Quiet

Cam Lope at Idle: Very Aggressive

Description: The S&S 475C made the second best peak HP in our test, it accelerates hard. It is very responsive and has the most aggressive lope of all the cams we tested by a significant margin.

Wood WM8-22X Camshaft

Valve Train Noise: Very Quiet

Cam Lope at Idle: Aggressive

Description: The WM8-22X camshaft offers the best early torque in this test, and it faired well horsepower wise. This cam is easy to tune and has an aggressive lope.

Zipper's Red Shift 468 Camshaft

Valve Train Noise: Very Quiet

Cam Lope at Idle: Semi-Aggressive

Description: The Red Shift 468 placed in the middle of our test for both peak torque and horsepower. It has really broad power, nice and strong through the mid RPM's. It has a semi aggressive lope.

Wood WM8-222 Camshaft

Valve Train Noise: Very Quiet

Cam Lope at Idle: Moderate

Description: The WM8-222 made the best overall peak horsepower. It made slightly less early torque than the other cams. It has the smoothest curve.

The source data web page for the 107" is here:

https://university.fuelmotousa.com/h...shaft-Shootout

If you want a cam comparison for the 114" It is here:

https://university.fuelmotousa.com/h...shaft-Shootout

Good stuff......

[Gorilla]

The woods 22x looks like a good trike cam.

[Wmitz]

There are a few newer cams out since that testing was done. Zippers has 2 new cams and I believe CycleRama has a couple also. It’s an ever changing field. One shop was testing the new CR cam showed impressive torque numbers from 2000/4000 on a 107/114. They called it a tractor build, so it should be pretty good for a trike.

[Free Bird]

There are a few newer cams out since that testing was done. Zippers has 2 new cams and I believe CycleRama has a couple also. It’s an ever changing field. One shop was testing the new CR cam showed impressive torque numbers from 2000/4000 on a 107/114. They called it a tractor build, so it should be pretty good for a trike.

Thanks.... I will see if I can dig up the dyno curves and summaries and post them too.

[Wmitz]

Sheffer performance has some of the dyno runs you might be interested in.

[Sloride]

Great post. The weight and profile of our trikes makes cam selection even more critical than a 2-wheeler. I think a WM8-22X is in my future.

Thanks for posting this

[Free Bird]

Zippers Red Shift Cam 472 - bolt-in grind for 114, 117 & larger M8

Work with factory valve train components, as well as modified heads with upgraded spring / valve combinations and porting.

A mid-range to top-end cam that maintains low-end torque. Cranking compression is only slightly higher than factory for easy starting

Quiet operation and long valve train life.

[Free Bird]

Found this to add to the study....

This is a great discussion of the M8 head's air flow and cam dynamics.... It is done by Zippers, so it is definitely a sales pitch for their cams, but it is also a good look into the engineering of the M8 heads and the needs of any cam design that aims to take full advantage of its design. Enjoy....

[MDO]

Here is another video using a different # Red Shift cam & the increase is impressive. They use a #472 Red Shift Cam.