I want more"more power"...
I was just looking for some feed back on whether a change was worth wile. I dont race the car. I want it to be faster... or do longer or smokier burnouts... or do 120 across the lake dam instead of 110... all of which are more fun... Its all about getting a smile on my face. I may miss some of the nuances along the way when making changes... but you cant learn if you dont try ... or ask...
Been there, done that, got a drawer full of T-shirts!
What you ask is usually responded to by "How fast can you afford to go?". This is because it is all about the Benjamin's. What you want is more torque. Torque is what pushes you back in your seat, accelerates your car and puts a grin on your face.
This is why I recommend a rear gear change as the cheapest and best modification you can make for a street driven car. A steeper gear multiples the torque your engine makes right now. Down side is you are spinning the motor higher and you won't be setting any land speed records.
A power adder adds torque by increasing the pressure on top of the piston (more downward force, more torque). Down side is expense and accelerated wear (a turbocharged piston powered aircraft only gets seventy five per cent of the mandatory time between major overhaul due to this added stress on the motor). With Nitrous-oxide you will discover that the bottle is always empty when you want it most (to put that annoying kid with the Honda or Subaru in his place).
The way you build torque normally aspirated is to close the intake valve as soon as possible (no rumpity-rump cam noise), raise the static compression ratio, and lengthen the stroke to hold the piston at the top of the stroke longer. This also enlarges your displacement which is the easiest way to increase torque. That is why I always build a bigger and bigger big block Chevy. It explains why everyone thinks a 383 is God's gift to Camaros. They obviously have never driven a SBC 406 or a blown 540 BBC, or a NA 632 big block.
As been stated anything above 550 foot pounds of torque will overwhelm a street tire producing not only a lot of tire smoke, but loss of control if you punch it on the interstate doing 70 mph. I don't know how much you have in your engine now but some pocket porting and a cam swap can get you 586 horsepower at 5,800 rpm, and torque of 589 lb-ft at 4,100 rpm out of a ZZ502 crate motor. It has a lot of bang for the buck.