Topic: cam choice

[Tintop48]

hi,i have a 77 A and decided to put an 836 kit on,which has 10.5 to 1 compression.im doing this to hopefully increase torque in the low to mid rpms,reason being thats where i like to ride.this bike will never see over 5000rpm. my question is that right now im using the 750 k cam and roundtops,would i enhance the low to mid with that cam or should i use the A cam?any help would be appreciated.

[garyS-NJ]

hi,i have a 77 A and decided to put an 836 kit on,which has 10.5 to 1 compression.im doing this to hopefully increase torque in the low to mid rpms,reason being thats where i like to ride.this bike will never see over 5000rpm. my question is that right now im using the 750 k cam and roundtops,would i enhance the low to mid with that cam or should i use the A cam?any help would be appreciated.

I don't know much about caming a Honda and I'm sure others will chime in with the go to cam for the 836 kit but why not ask the supplier? And cam choice will be dictated somewhat by your head work and intake and exhaust... I still think the stock intake and exhaust is overly restrictive

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[dave the welder]

do NOT use stock A cam.it has LESS lift and duration.keep the k cam

[seanbarney41]

.this bike will never see over 5000rpm.

that's silly...unless all you want to do is putt putt and then why bother with a cam change at all.  5000rpm is just about where the torque curve starts

[slikwilli420]

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

[seanbarney41]

Careful matt, we talking about the Honda powerglide aka automatic

[Sam Green Racing]

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

hahaha, they only have 2 gears mate and this is the best cam by far for what this guy wants and his piston set up. It's available from Dynoman.  http://www.dynoman.net/images/engine/cams/DP/DP295Cam.jpg

[garyS-NJ]

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

Shift at 8 grand?  I have a dohc 1995 katana 750 and I think I shift that bike around 8k when I'm hot dogging.  I don't remember shifting my '78 cb750F that high.  And yes, I also missed the  original post 750A is automatic and he was asking about a 750A stock cam or a 750K stock cam...

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[garyS-NJ]

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

hahaha, they only have 2 gears mate and this is the best cam by far for what this guy wants and his piston set up. It's available from Dynoman.  http://www.dynoman.net/images/engine/cams/DP/DP295Cam.jpg

Hmmm, a street and race cam in a hondamatic with an 836 kit and 10:1 compression. It all sounds oxymoronic especially after recently working on a hondamatic 400 (I didn't ride it but it seemed pretty tame in the garage).    So the K cam has more lift but the stock head set up for an A will accept the added lift?  As well as the recommended dynoman cam?  What about a cam from an F bike?   

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[slikwilli420]

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

hahaha, they only have 2 gears mate and this is the best cam by far for what this guy wants and his piston set up. It's available from Dynoman.  http://www.dynoman.net/images/engine/cams/DP/DP295Cam.jpg

Brain farted on the auto thing. Still ride it harder than you are and it will treat you right.

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

Shift at 8 grand?  I have a dohc 1995 katana 750 and I think I shift that bike around 8k when I'm hot dogging.  I don't remember shifting my '78 cb750F that high.  And yes, I also missed the  original post 750A is automatic and he was asking about a 750A stock cam or a 750K stock cam...

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Then you aren't riding it right. These are meant to be ridden like the sport bike they were. I raced a stock '76 F engine last year, shifting at 9500 all season, and it never went boom.

[garyS-NJ]

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

hahaha, they only have 2 gears mate and this is the best cam by far for what this guy wants and his piston set up. It's available from Dynoman.  http://www.dynoman.net/images/engine/cams/DP/DP295Cam.jpg

Brain farted on the auto thing. Still ride it harder than you are and it will treat you right.

This makes no sense. These bikes are not designed to run at that rpm. You will get poor performance and likely carbon buildup on the valves. Better torque just gets you up to speed faster. Shift at 8 grand as designed and enjoy the bike as it was meant to be. If you like short shifting and being in 4th gear at 30mph, get a Harley.

Shift at 8 grand?  I have a dohc 1995 katana 750 and I think I shift that bike around 8k when I'm hot dogging.  I don't remember shifting my '78 cb750F that high.  And yes, I also missed the  original post 750A is automatic and he was asking about a 750A stock cam or a 750K stock cam...

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Then you aren't riding it right. These are meant to be ridden like the sport bike they were. I raced a stock '76 F engine last year, shifting at 9500 all season, and it never went boom.

My 78F has been laid up for a few years now so I guess my memory is fuzzy.  But if all goes well I'll have a 79 gs1000 on the road today and we will see if she shifts at 9500 (hard to believe because I just looked at the tach and red line is 8500).

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[seanbarney41]

Not sure why a roller bearing crank dohc 1000 is relevant here?

[dave the welder]

read somewhere use a k cam and pick up  a cam gear you can advance that will help low end and mid range

[underdog]

  Sam was dead on, you'll be happiest with that cam and maybe 4 degrees of advance. I have a CycleX CX-3 and I like it, but the 295 is better. The adjustable cam sprocket is definitely worth the $40.