Who makes the biggest drop in cam for CR..

Who makes the biggest drop in cam for the CR's.

  • Maxspool

    Votes: 14 17.7%

  • Hamilton

    Votes: 34 43.0%

  • Diesel Pro

    Votes: 12 15.2%

  • F1

    Votes: 19 24.1%
  • Total voters
    79
all these .050 numbers are good and well, but lets see some .200 duration numbers as well as overall lift.

Its also not about biggest its about having a lobe that matches your engine combo. cylinder head, turbo, desired rpm operating range, ect..

Also the rest of the valve trian has to be able to handle the lift, the tappet velocity at a certain rpm.
 
Our Intakes usually have lightning quick velocity. As far as exhaust I like them a bit slower than the intakes but still much faster than stock. Gotta-12v, you are right the .050 numbers only show part of the picture, but they do a much better job than just showing the seat timing. I am not willing to post every duration @ x lift for my entire catalog. That would be giving the competition my playbook. If you search cam threads as far as drop-ins all of the numbers are there as well as info on ramp rates. Back in the day there was a lot of misrepresentation because people only looked at the .006" timing one would be at 225 at .006" and 170 @.100" while there might have been one 219 on the seat and 185 at .100". the one with less seat duration is actually a much better lobe because of the short seat time it will give a better bottom end. Because of the greater ramp rate it has more time at .100" .200" and .300". Because of the more aggressive ramp it will also be able to achieve more lift in a given duration. The 219 on the seat although it looks smaller will give more power at lower rpm and at higher rpm. In the old gasoline cam wars, I believe it was Crane that started publishing the .050" numbers so that they wouldn't keep loosing sales to inferior cams with slow ramps. If you want very aggressive ramps with a lot of lift, that dictates more spring pressure, and a lot of additive to keep everything alive. For the street, this is not a very good idea. So the biggest for the street is not always the best. We already have more spring pressure than some spring, given more lift there is more pressure on the valvetrain. More duration at higher lifts means there is more pressure for longer on the valvetrain. These dictate race only type cams. If you want the biggest, you take responsibility for valvetrain/cam wear.



Zach
 
Hamilton Cams said:
Big orange, did you get the 181/218 or the 199/218?
Click to expand...

I'll have to check with geoff, I know geoff called it the stage 4 and I know he told me what the #'s were, but I can't reminder my phone # on the best days LOL , and geoff got me to check the valve to piston clearance because it was the biggest I could go with stock piston protrusion .
 
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