CAM ??........

ok guys,, whats the diff. beteen a nos cam and n/a cam

and whats the diff. from roots blower cams and other superchargers from n/a

gess the cam guru's went to bed.

Not an expert but I believe that NOS and blown application cams favor the exhaust more due to the artificial "air" that is being supplied.

The guru's will add or correct I'm sure!!

Bill

possible lobe seperation? my budies 331 with a FMS X cam and a vortech supercharger pushing 13 lbs did not get along. did not matter what head gaskets were on it...felpro,cometics,titian copper still lifted the heads. the word was to much cylinder pressure. just my thought

NITROUS is a TORQUE maker so, camshafts for those applications are designed mostly around horsepower and to keep any unused-up NOS out of the exhaust system.

ALL supercharger camshaft designs take into consideration the raised temperature of the inlet charge however:
Centrifugal supercharger camshafts are simply a bit larger NA cams with a bit more exhaust duration as boost pressure is low at lower RPM where the supercharger is not doing a lot of work.
ROOTS supercharger cams are based as if the engine was a larger engine, (dependant upon the size of the supercharger), and lean heavily toward the exhaust side as it is NOT being helped.

This is VERY simplified as certain circumstances will lead to many derivatives from these criteria.

Would it be fine to use one of these cams without nitrous or a blower? Or would it run bad.

Running a forced induction/NOS cam on a N/A engine would leave much performance on the table. It could be far from optimal depending on how much NOS or PSI the cam was designed for.

Must be designed as a package. Each part should be optimised to run with all the others.

Bill

'65 T-BOLT wrote:possible lobe seperation? my budies 331 with a FMS X cam and a vortech supercharger pushing 13 lbs did not get along. did not matter what head gaskets were on it...felpro,cometics,titian copper still lifted the heads. the word was to much cylinder pressure. just my thought

that cam creates a crap load of cylinder pressure. it was made for factory compression and to be a NA "race" cam. he was lucky to get that thing to live at all with more than 6lbs boost.

you guys would laugh at the size of my turbo cam. It doesn't have much duration (for a race engine) but still has over .700" lift.

bb429power wrote:Would it be fine to use one of these cams without nitrous or a blower? Or would it run bad.

The WRONG camshaft for the application will ALWAYS run worse than the "correct" camshaft; how MUCH worse is the only question.