Turbo's for the street

[nitrorocket]

A set of PT-67'S are GREAT turbos and will make 1300 hp like nothing. You will wish you went turbo many yeasr ago after having them. I cannot describe how great it is to make such huge power all day every day. The car will drive like stock, but make insane power at the push of the pedal. No need to fill a bottle, throw belts, or loud whinning.
Part of the reason to go with smaller cubes is efficiency and need. A Turbo can make up for cubes with boost up to your octane limits, after that, it is time to increase cubes. A typical 330-400" turbo motor will make an easy 1200-1500 hp under 30 psi on 116 octane. Do you need mre then that?? If you want to build the ultimate pumpgas engine, a turbo 800" mountain motor will make an easy 1800+ hp on 93 octane pumpgas.
The downside to massive cubes on the street on a turbo car is the efficiency. If 80% of the driving is done at part throttle, a 350" motor will suck about half the fuel of a 540" motor. So for a mostly street driven car, I would go small cubes for efficiency and weight, and cost savings.
If I wanted to race and had a chassis car, I would build the biggest motor possible and slap a turbo on it!