quote:Originally posted by ski:
Would you likewise increase lift on a hydraulic cam grind for an engine with 2v heads or should I just stick with your hydraulic boss camshaft grind.
A solid flat tappet lobe can open a valve at a faster rate than a hydraulic flat tappet lobe, therefore the solid flat tappet version of this cam has a little more net valve lift than the hydraulic flat tappet version. Although the advertised duration specs and event timing specs are identicle, they are actually using two completely different lobes.Just compare the duration at 0.050" specs and you'll see the solid flat tappet cam has more "area under the curve" as they say.
The amount of valve lift of the hydraulic flat tappet version of this cam is a characteristic of the lobes I've chosen, it can't be altered unless we specify completely different lobes or expensive rocker arms with a lift ratio higher than 1.73:1. I chose these lobes because they possessed several key characteristics and I wouldn't change them. The valve lift is adequate ... especially for 2V heads. An unported iron 2V intake port hits a brick wall in the air flow curve around 0.400" lift.
Opening the intake valve 0.560" is actually quite a lot, Ford's first racing cams for the 351C only had 0.589" net valve lift, so this hydraulic street cam is just shy of that amount.
quote:Originally posted by ski:
One last question, what do the lobe numbers mean #H295/324, H285/324, are they Bullet Cams blank camshafts for grinding?
Bullet cams has a catalog of hundreds of lobe profiles to select from, the lobe numbers are simply their way of identifying each profile. My spec provides enough information to them to grind the camshaft, just copy & paste it.
quote:Originally posted by ski:
Thanks Mark
you're welcome
