In this thread we are going to outline what is involved in a cam swap in the Milwaukee Eight engine. This is a very straight forward procedure on this engine. We will covering the complete step by step install using a bolt in replacement cam using quick install adjustable pushrods, we will be re-using the stock lifters. We will also be testing before & after on the dyno. The bike is our 2017 Road Glide with 107" M8 air cooled engine.

Here is the motor ready for disassembly, we've removed the complete exhaust system, air cleaner, and cam cover.

 

Looking forward to seeing what cammed M8 will churn out. Thanks for the thread Jamie

 

Here is the baseline dyno test. Stock M8 107" air cooled engine, SE air cleaner, pre-production Jackpot 2/1 exhaust, Dynojet Power Vision tune.
Note: this baseline was done over the weekend when we were testing exhaust systems, not all of the charts in this thread will be from same day testing.

 

Thanks very much!!!!!!!!! This is what I've be waiting for.

 

To get started you will remove the cam cover.

Here is a close up image of the camchest

 

In this application we will not be re-using the factory pushrods, we are using Quick Install style adjustable pushrods.

Here we are cutting the factory pushrods with a bolt cutters and removing them. Do not use a cutoff wheel or grinder, use a bolt cutter which makes a clean cut and eliminates (or highly reduces) the chances of any particulates making their way into the motor.

 

That's really nice early torque on a stock engine can't wait to see it with a cam

 

Are the pushrods used, the same as what would be used for a Twin Cam?

 

I don't believe there is anything in that engine that's the same as a twin cam

 

The exhaust pushrod is longer than a twin cam, in this install we are using the M8 SE adjustable pushrods which includes shorter tubes. We should however be able to adapt our FM twin cam pushrods for use with the M8 in the near future.