[dreksnot]

Originally Posted by jlaudio11

What are your goals or what are you trying to achieve? Big enough turbos to really outshine the power of the pd blower is going to have boost lag. Heat can still be an issue for iats and oil temps. Pulleying for more and some kind of smoothboost does sound ideal.

The right (efficiency) turbos will easily outpower the LT4 (and others); they don't have to be big turbos either, pound-for-pound boost. IAT's will likely be lower than the SC. Yes, there will be some lag when slamming the throttle at a low RPM but if the motor is in the higher band, boost will be very quick (but not the instantaneous slam of the LT4). There are now oil-less turbos that don't heat the oil, some are water-cooled (choices out there). But then again, that SC instant torque of slamming one back in the seat is not like a turbo jetliner takeoff.