There's always something very special about the annual AMSOIL Engine Masters Challenge issue, where we spend a week dyno testing dozens of awesome engines. It's in each February issue that we put all this goodness into print each year, and it's no wonder that it's our biggest selling issue of the year. You guys just love horsepower in bulk form, and you won't find it at Costco--nope, it's right here in PHR. This year's dyno thrash has 31 killer engines of all brands and displacements. AMC, Buick, Chevy, Ford, Chrysler, Olds, and Pontiac are all represented. We've also got a really cool history lesson by Bill Mcguire about the 10 most influential V-8s through history. Topping it all off is the first look at Chevy's brand new LT1 engine, which will grace the new 2014 Corvette. Like homebuilt hot rods? We've got three wicked pro touring machines that will blow your mind!