The new Car Craft has a good dyno test on N2O cams....

They did it right too by making both cams have the same Overlap, even when the LSA was wider on the N2O cam.


Turns out that their NA cam was a better cam on the jug as well. Same thing that I have been saying all along, a bunch more exhaust duration and wide LSA are not needed on a N2O cam if you are doing a small to medium shot (200 or under) even over that you don't need to go too crazy.

Go out and get it, it's a good read.

Bret

 

what i'm wondering is how much better would it run on nitrous if it had less overlap? would compromising the car N/A be worth the extra ponies on the guns?

most of the experience people(read: old) always said "get the car running as fast as you can on motor and then spray it" because they weren't believers in this "nitrous cam" mumbojumbo of recent times and i guess they were right.

 

That's awesome I will have to check it out.

 

I'll have to check that out........Mabe this will be the begining of the end of the BS rumors about cams needing to be on 112's and 114's(and higher) to be a great nitrous cam.......

 

That test was on a small shot with a cam from a catolog list so don't get all crazy thinking ya can spray any N/A combo an it'll be better than a nitrous build. When I had Comp do a custom grind for me it came back with some odd specs, the lift was .656 on the intake, 637 on the exhaust with 272@.050 duration intake an 282@.050 exhaust an a 110 lca. the car only ran 10.9 N/A but with a 200 shot it ran 9.53@142, thats a nice jump!! With a 350 shot it runs low 9s@152. A motor only build couldn't drop nearly 2 seconds of ET without some head gasket or piston loss from too much spray. The LCA angles of past years (112-115) are tightening a little but its the valve opening an closing events that make a nitrous motor move so don't rule out a custom grind if your building a nitrous specific engine.