Found this Norris cam in a bunch of stuff. The grind number is 325 S. The cam specs: Would you run this cam or is it to hot for the street?
Would you run this cam or is it to hot for the street The cam we're running in our race car is the same cam we ran on the street. A .425 lift 270 duration Scneider. 32 roadster with c4 auto. So, I don't think that cam is too hot for the street. second thought, that is a lot of duration. Would that kill the bottom end?
zero overlap. blower cam is my bet. still kind of weird how low lift it is. but maybe they were onto something, very weird, and high boost. its really really long as to why i would arrive at this, but going by the overlap, i would say blower cam for sure. same goes for the lobe centerline. seems short for even a blower, but like i said. If you know the particulars of the engine this cam was designed for, it would be wild. maybe an ardun head as well, didnt they have limited valve lift capabilities because of the rocker ratio (meaning the cam didnt need as much lift) which would mean that you could have better valve control on opening and closing because you didnt need to achive as much lift. onthe flip side of that, is the same opening and closing, but longer peak lift. which is a very good thing as well. so either they really found something that worked, or it is designed for a very specific type of engine, such as a blown ardun. makes a good story at least!
We ran an Isky 1017 in our old flatty race car. It had a .355" lift and a 273 degree duration. The lift wasn't much, but the duration was wicked. The reason we used that cam was the rules required unmodified stock heads and the 1017's relatively low lift kept the valves from hitting the heads. We also used thin steel gaskets for a little more compression ratio and that made the top of the head even closer. These type rules were more common a**** dirt track racers than drag racers. Maybe it was something like that. However, I'm liking that Ardun idea.
The Jalopy Journal
