camshaft powerbands

I have two cams one is a .410 lift .266 duration. And the other is a .395 lift .256 duration . Was wondering what the power band was on these cams the .395 I had in my old motor and it started pulling around 4000 rpm but was a dog below that . I read that the .410 is something like 6500 rpm and up before it pulls . What doing u have in your bikes ? And we're is your power band at ? Am in the process of selecting a cam to install . At the moment I think am going with the .395 cause the head is already clearance for the lobes. has high performance valve springs install. I don't really have a lot of money to spend . Am trying to stay away from shim under buckets .and over sized any thing . What are your thoughts ?

In a nutshell, the lower lift and shorter duration will give you a (little) less top end with the benefit of a (little) more bottom end

What size id the motor/comp/carbs?
How will the bike be ridden most of the tine?

1135cc ,10.5cr ,stock valves , ported head ,34mm rs Mikunis. 6" Extended swingarm , dyna2000 ign. 3.0 ohm coils. Making a pro street out of it . I do plan on riding on the street but just like to car shows around town no more then 5 miles no freeway . But I still want something that will be competitive at the track . By the way what kind of horsepower do u think it will make ? And et with 170lbs rider ?

You might want to check your duration @ what lift. I do recall the 395 cam has 256 duration @ .05 and usually the 410 cams have in the 260 range

69newportking wrote: I have two cams one is a .410 lift .266 duration. And the other is a .395 lift .256 duration .

that's what I put but sorry forgot to put @.050

69newportking wrote: 1135cc ,10.5cr ,stock valves , ported head ,34mm rs Mikunis. 6" Extended swingarm , dyna2000 ign. 3.0 ohm coils. Making a pro street out of it . I do plan on riding on the street but just like to car shows around town no more then 5 miles no freeway . But I still want something that will be competitive at the track . By the way what kind of horsepower do u think it will make ? And et with 170lbs rider ?

Id make a wild guess of around 120hp at the rear wheel with the ,410s.
Track times depend on too many different variations.

For 1977 kz 1000 the book says 83 horsepower .is that at the motor or the wheel ?

69newportking wrote: For 1977 kz 1000 the book says 83 horsepower .is that at the motor or the wheel ?

As far as I know, all advertised hp is at the crank.

steell wrote:

69newportking wrote: For 1977 kz 1000 the book says 83 horsepower .is that at the motor or the wheel ?

As far as I know, all advertised hp is at the crank.

Yep, pretty sure you would find 60 to 70 hp at the wheel on a stock KZ1000.

I saw a stone stock kz1000 with 26s and stock airbox and an old kerker make 75-76 at rear wheel.

PLUMMEN wrote: I saw a stone stock kz1000 with 26s and stock airbox and an old kerker make 75-76 at rear wheel.

Well there you go. I was just guessing (a little low apparently), but here is the voice of experience.