Ever wonder what will set ported heads apart?

[Kenny]

There will be dyno numbers. This will be part of an openly sold cam line (if they work). This cam is designed for the Raptor valvetrain. It's definitely not a catalog grind that everyone else uses with adjusted lobe centers. Of course you guys can see I am going the exact opposite way of everyone else....... I guess we'll find out who's right

[RaptorRandy]

Who's gonna make the spring's to support that?

I'm guessing R&D 

We have a couple of options like PAC and Ferrea, but on this particular design, it looks like properly installed Kibblewhites are gonna do just fine

Kenny, any chance of running into coil bind with this kinda lift running the kibblewhite springs?

[Kenny]

The Kibblewhites will go somewhere over .700 lift at the regular installed height. We just have to find out if there is enough spring pressure to keep the valves under control. So there may be shimming or even another style spring involved. I kinda like running close to coil bind because the spring gets more stable.... Tell me what you think of the lobe shape. I know you've seen it before

[RaptorRandy]

The Kibblewhites will go somewhere over .700 lift at the regular installed height. We just have to find out if there is enough spring pressure to keep the valves under control. So there may be shimming or even another style spring involved. I kinda like running close to coil bind because the spring gets more stable.... Tell me what you think of the lobe shape. I know you've seen it before

The lobe shape looks great ......... looks a lot like the lobe shape I see in the Sprint Car Engines 

[VelociRaptor]

Ive told people for years that the KW springs will take way more than the advertised .480 max lift rating. Its the strongest "Raptor" valve spring Ive tested yet.

[Kenny]

The Kibblewhites will go somewhere over .700 lift at the regular installed height. We just have to find out if there is enough spring pressure to keep the valves under control. So there may be shimming or even another style spring involved. I kinda like running close to coil bind because the spring gets more stable.... Tell me what you think of the lobe shape. I know you've seen it before

The lobe shape looks great ......... looks a lot like the lobe shape I see in the Sprint Car Engines 

That is one of the things we struggle with in these roller rocker motors. The motorcycle cam companies can't seem to get a good handle on it, and the race car cam companies don't want to fool with it. I've been through half a dozen high end cam grinders during the last 2 years, and this is the first complete cam that I will be able to put on the shelf. We aren't talking about commercial brands either. I am talking no window "skunkworks" companies that do stuff for Pro-Stock, NASCAR and F1. Getting these done is tough!

Ive told people for years that the KW springs will take way more than the advertised .480 max lift rating. Its the strongest "Raptor" valve spring Ive tested yet.

They are the most commonly available and they work well. We have used some custom beehive stuff that is 325 lb-in and installed at 85lb seat pressure Needless to say, that was not exactly trail friendly. It also barely controlled some of the "one off" cams we have done with nearly 500lb of spring over the nose per lobe..... That was a real indicator that we were going the wrong way somewhere.

[VelociRaptor]

Not enough market for alot these companies to really care about.