Camshafts, where??? Options

[edo17982]

Hi guys!
Do you know if there is someone who produce more performant cams for 7AFE engine?
the only site I found with aftermarket cams is Import performance
which sells TopLine cams. Who know about this manufacter?is it good?
Also, does anyone know how to get regrinds, valves and springs for better performance and which are stronger than stock?

Thanks

[3TST]

Lets try and get back to basics on this.
You need to understand the engine firing cycle first. This is how I remember it...
suck, squeeze, bang, blow.
The fuel mixture is forced into the cyclinder on the down cycle of the piston (suck), the pistons compress the mixture on the up cycle of the piston (squeeze), the plugs ignite the mixture causing a down cycle of the piston (bang) and the gases are evacuated on the up cycle of the piston (blow).

So what does this have to do with the camshafts?
You have to understand what the camshafts do.
They open the intake valves to allow the fuel mixture to enter the cyclinder and then, after the firing seqeunce, they open the exhaust valves to allow the burnt gases to evacuate the cyclinder.

An increase in the the amount of mixture in the cyclinder means that the piston has to work harder to compress this mixture.
If you have an increase in mixture then you'll have an increase in the burnt gases thus you need to evacuate the gases better.

If re-grinding/upgrading your camshafts, to get maximum effect, you'll need to upgrade your air/fuel distribution, ignition and exhaust.

Hope that sheds some light on the issue.