What makes a good nitrous camshaft

Nitrous pretty much IS supercharging. It is simply a chemical way of putting more "air" oxygen into the engine.

A blower forces atmospheric air containing oxygen to burn more fuel into the engine, and nitrous does it with a dense, oxygen rich 3 times more than what the atmosphere contains once it hits degrees of temperature in the cylinder.

Either way, you need to meet that oxygen with fuel to make power. Air doesn't burn, fuel burns. They key to making power is making the engine burn more fuel. That can be done with a blower, nitrous, or more cubic inches to suck-in a bigger gulp of air and fuel.

With that, the effect on cylinder pressure is also the same in any 3 of those scenarios. The basics of what you want in a nitrous or supercharger friendly cam is a wider lobe separation than what most "performance" or "race" cams have. Anything with a , or degree lobe separation is great for blowers and nitrous. Can you use a performance cam with a or a LSA?

Of course, but you won't get as much of the benefit from the power adder as you would with a wider separation angle. That overlap is what gives the engine that rumpity rump sound that everyone thinks gives the engine more power.

Overlap is the time between when the exhaust valve closes and the intake valve opens. It is when both valves are off the seats at the same time. It is also what causes cams to not "come in" until higher RPM's. The more overlap, the higher the RPM range will be with that cam. My question is I was thinking of using the summit racing flat tappet cam. Is this cam considered a good cam to use with nitrous? Re: A good cam for nitrous? You will get a much better result using this cam: Crane F Be sure to use suitable hi perf dual valve springs.

The hyd cam will give up the ghost before you get to the stripe when on nitrous. This Crane F solid flat tappet will make more power on and off the nitrous. Another good one for this job is Crane F higher lift use long slot rockers. Both these are much better for your purpose. I had a very similar combo back in the day. Comp cams Magnum S will similarly get 'er done. Again use correct valve springs and long slot rockers. Malik » Mon Nov 07, pm When getting a cam for use in an engine intended for Nitrous Oxide I have been told many years ago, a rule of thumb is "".

Figure out the cam as if the engine was normally aspirated then add 2 degrees to the intake, 4 degrees to the exhaust and 2 degrees to the separation. Using this rule of thumb has always been close for me. Some things may be different these days but, that still works.

Post by wyrmrider » Mon Nov 07, pm is this a race only trailer queen or a daily driver with an occasional shot first get your cam worked out for na converter, gears weight etc etc. Post by Jatmobkar » Mon Nov 07, pm The car isn't a strict drag car.

It's a mostly strip car that will see occasional street cruises. Post by ClassicComp » Mon Nov 07, pm post the car,gear,converter,weight,tires.

If you want to race on nitrous using 92 octane pump gas lower the engine compression ratio down down. Post by Jatmobkar » Mon Nov 07, pm The car is an 85 cutlass. Roughly pounds. I don't mind running race gas. Post by cstraub » Mon Nov 07, pm Nitrous cams were developed in the marketing departments of cam companies back in the late 80's.