"As we did last year, we made a stop at the K&N Engineering in Riverside, Calif., to measure engine output via its chassis dyno. PUTC readers with good memories will recall the Ram's Pentastar V-6 pulled 257 horsepower at 6,500 rpm and 220 pounds-feet of torque at 5,900 rpm. By comparison, our Silverado 4.3-liter EcoTec3 V-6 pulled 243 hp at 5,250 rpm and 256 pounds-feet of torque at 4,550 rpm. To put that in simple terms, the Pentastar makes about 5 percent more horsepower and the EcoTec3 makes about 16 percent better torque, but in both cases, peak power is quite a bit lower in the rpm range for the Chevy."
