To that the GT department has added a pair of larger turbos and upped the boost pressure accordingly, there is also a bespoke lightweight titanium exhaust system and revised engine internals to cope with the increased power and torque. (evo.co.uk)
The LT4 is also designed with other features that serve to optimize engine performance through forced air induction, including: Forged steel connecting rods, forged aluminum pistons, Rotacast A3536T6 aluminum cylinder heads with lightweight titanium intake valves and hardware, an aluminum balancer, a dry - sump oiling system, and stainless - steel exhaust headers for more rapid heat dissipation. (bestride.com)
The 1991 Acura NSX was Honda's tour de force of innovative technology: all - aluminum chassis, forged aluminum suspension arms, antilock brakes, forged aluminum wheels, and a high - revving, 270 - hp 3.0 - liter V - 6 engine with lightweight titanium connecting rods and variable valve timing and lift, plus electronic throttle control. (automobilemag.com)