I have a 95 eclipse gs with the 420a engine and 5 speed. It is gutted, cage installed, and I race it on dirt ovals (1/4 mile and 3/8 mile). Engine is bone stock with a cold air intake and header. Compression is still good across all the cylinders, does not smoke at all. I run 2nd gear during racing and run it up to the rev limiter constantly. I adjust gearing with tire height depending on the track and conditions.
My question is, what would be a good camshaft to make the most horsepower from around 2000 rpm and up without doing any major mods to the head and lower end. Would like a good cam that I can put in with a spring change but leave the rest of engine stock.
Thanks