Originally Posted by cowboytruckn
I'm still pokin' around in my Silverado. What is the horsepower difference between the 4.7 and 5.7? Gas mileage?
4.7 was 235 HP 295 ftlb of torque
5.7 is 345 HP 375 ftlb of torque
I get a little bit better mileage with my 07 and its alot more fun to drive!