LMN8R
Well-known member
From the November issue
"Beware, Dodge Viper and Ford GT. The 2006 C6 Corvette Z06's 6.3-liter Generation IV small-block push-rod V-8 features 24 valves and makes 500 horses at 7000 RPM. The Gen IV is the featured engine using a new GM powertrain technology: a three-valve/cylinder pushrod valvetrain, which the automaker also will use in some High Value V6s. The C6's small-block can grow to 7.0 liters and rev to 8000 rpm.
The new design pairs intake valves side by side; they're operated by a forked rocker arm. The exhaust valve sits on the opposite side of teh combustion chamber, with a centrally located spark plug in between. The Gen IV flows more are through its dual intake ports, and the intake and exhaust ports are more widely separated for less heat transfer from the exhaust ot the intake charge. The extra horses work well with the Displacement on Demand system that appears with the Gen-IV V-8 and High Value V-6's-more power means more opportunity for the engine to idle half its cylinders. Look for the deeper breathing heads and associated upgrades in the 2005 model year."
"Beware, Dodge Viper and Ford GT. The 2006 C6 Corvette Z06's 6.3-liter Generation IV small-block push-rod V-8 features 24 valves and makes 500 horses at 7000 RPM. The Gen IV is the featured engine using a new GM powertrain technology: a three-valve/cylinder pushrod valvetrain, which the automaker also will use in some High Value V6s. The C6's small-block can grow to 7.0 liters and rev to 8000 rpm.
The new design pairs intake valves side by side; they're operated by a forked rocker arm. The exhaust valve sits on the opposite side of teh combustion chamber, with a centrally located spark plug in between. The Gen IV flows more are through its dual intake ports, and the intake and exhaust ports are more widely separated for less heat transfer from the exhaust ot the intake charge. The extra horses work well with the Displacement on Demand system that appears with the Gen-IV V-8 and High Value V-6's-more power means more opportunity for the engine to idle half its cylinders. Look for the deeper breathing heads and associated upgrades in the 2005 model year."