alright i have a 2002 5.4l v8 and i just bought a kennebell supercharger and i was wondering if there would be ne reason for me to put new camshafts. i want a lot of power but still be able to drive it everyday. So would it make ne sense to change them? and could someone fully explain what they do and possibly point me in the direction of some good ones thanks

 

The cam pushes on the valve and keeps it open long enough for the air and fuel to enter the combustion chamber then it allows the spring to push the valve shut. Your supercharger pushes more air into the combustion chamber so you will get a bigger bang. Because you now have more air your injectors need to inject more fuel. But I am getting ahead of myself. The stock cams are design to give good power and fuel economy through out the rpm range. You could design to cams to stay open longer ( the term is duration ) or you could make them push further down on the valve ( the term is lift ). You could make them do both. There is another thing to consider and that is overlap. The amount of time that both the exhaust valve is open letting out the exhausted gases and the intake valve is open letting in a new charge of fuel air mix. If you play with these settings you will produce more power but the usable range of this power will also change. For instance our cams are designed to produce most of the torque at low rpms. I believe it is 90% before 1200 rpm. Regardless of the exact number ( I don’t feel like looking it up ) you can change the cam to produce 20% more ( as an example ) but it will only be starting at available at 2500 rpm. So with the new cam you will make more torque but at 1200 rpm you will be making less than the old one. Your truck will be a dog till it reaches 2500 rpm. The supercharger will add power to the full rpm range.

Now if you are realy set on making power regardless of the rpm range you could compensate for the lack of low end torque by replacing the stock torque converter wil a higher stall one. It could be designed to slip till it reached 2500 rpm thus putting you in the sweet spot at take off. But this will cost you more fuel. You could regear the differential (s) to say 4.10:1. This will kick up the rpms but again you will suffer at the gas pumps.

JMC

 

who makes a converter like this and what kinda places would regear my truck ?

 

With the supercharger you don't realy need the torque converter. The converter is matched to the cams in your truck. But if you realy want to know B&M and TCI comes to mind. As for regearing I would look up local shops. Find a local tranny shop and ask. The good places here in town also install gears.

JMC

 

Honestly the Kenne Bell will make so much torque from about 1800 rpm on that with stock type tires you will have no traction from a standing start and break the tires in a shift to second especially with a shift kit.
I would not be concerned with cams and other changes except those for reliability. Traction Lok is a must or you are "one legged" and go nowhere.
I run one on a 5L and can tell these things with absolute honesty.

 

i have 24inch rims on mine with kuhmo ecsta tires so i dunno if it would still break loose. but do u know where i could get a shift kit?

 

Look at the Factory Tech valve seperator plate kit.
Ask them what you should do with a blower installed.
The tires you have will still lose traction, that is when leaning on the throttle.
You need to consider that the blower thru the wide gearing of the trans is a lot of torque multiplication.
A heavy truck will not move as quick as a lighter one but in trying, will break the tires loose quicker and more torque makes it worse yet.
Driving with this sort of setup has to be done with some reserve, especially on wet roads and around curves.

 

When you put more in ( supercharger), need to get more out,,Look at some PSP or JLP long tube headers and cats...

 

right now my exhaust i have 2 of the 4 cats off and 2 3/4 inch piping dualed out would it still be good for me to get longtube headers?