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General Category >> Rubber Side Down! >> Camshafts for ls650 ?
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Message started by Peter Fonda on 05/23/25 at 18:06:32

Title: Camshafts for ls650 ?
Post by Peter Fonda on 05/23/25 at 18:06:32

so I’ve got a 08 Suzuki boulevard ls650 s40, and looking to maybe swap in a cam, something that would help with some extra chop in the idle. Maybe even some more bottom end power. Right now the bike is all stock except for a Emgo muffler, and wouldn’t mind having a better air filter for it as well.

Title: Re: Camshafts for ls650 ?
Post by Dave on 05/24/25 at 03:50:30

All of the available performance cams have very little valve overlap and they have no affect on how the engine idles - the engine idles and runs smoothly after installation.

The performance cams do add some torque and horsepower - they work even better with the addition of a Wiseco piston to increase the compression.

The available cams are the Webcam Stage 3 available from Lancer in the Marketplace section - or you could try and find a good used DR650 camshaft from the early model bikes. If you use a DR650 camshaft you will have to drill oil holes in the lobes to use it in the Savage, and I also drill the center hole to match the size of the hole in the Savage cam.

Title: Re: Camshafts for ls650 ?
Post by Peter Fonda on 05/24/25 at 04:54:50

Ah, in other words I’m likely best to just leave it alone then lol unless I ever had to do the piston or something of such

Title: Re: Camshafts for ls650 ?
Post by LANCER on 05/24/25 at 05:19:16

Not necessarily, a cam swap is not difficult if you have some basic mechanic skills. A piston swap takes a bit more skill and a few more tools, and some more time, but is doable as well. Many folks here have done both successfully.

Title: Re: Camshafts for ls650 ?
Post by Peter Fonda on 05/24/25 at 05:39:20

Swapping the cam would I really notice much difference ??
Like I did a stage 2 cam swap on a Honda 450r quad I had, and it made a big difference for mid to top end.

Title: Re: Camshafts for ls650 ?
Post by DragBikeMike on 05/24/25 at 16:37:46

This old post will give you a good idea of what to expect when you install a mild cam like the old DR650 cam. As Dave previously mentioned, you absolutely must drill the oil holes. Other than drilling the holes, the cam swap is very easy and can be accomplished with common hand tools.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1626391255

The old post also includes links to modifications to the air box, carb, and exhaust system. Each old post measures acceleration so you can do comparisons of the before and after performance. You will be amazed at the improvement. Up to and including the cam swap, all the mods are low hanging fruit.

You can also find all this stuff in the Tech Section.