Originally posted by Edo:
As far as I know 380-400 Crank Horsepower is about as much as you can go.
The Japanese Tuners like Esprit have tuned the N/A NSX engine to 380+ I think with these Mods:
Velocity/Throttle Stacks
Ram Air Roof scoop and Lexan Hatch
JUN High Compression Forged Pistons (11.5:1)
(These also require a 0.5mm Overbore on 3.0L Engines. 3.2L cannot be overbored due to FRM Liners)
JUN Billet Connecting Rods (For Higher RPM operation)
High lift cams, and high lift Valve springs and valve spring retainers.
Fully Balanced Crankshaft
Larger 3.2L Heads retrofitted to 3.0L engine. Very Aggressive Port and Polish
DC sports Headers
DC sports Exhaust
Cat-Bypass Pipes
5KG lightweight Chromoly Flywheel with Springless 4 puck dual disc clutch.
MOTEC M-4 Fuel Controller
Larger Injectors (350cc?)
And..some other miscellaneous mods.
I am building my NSX up going the N/A route..although the BB SC is starting to look awfully good...hehe.