In the previous two installments of Modern Mouse, our latest Super Chevy dyno mule, we subjected the little 5.3L LS to a whole slew of aftermarket components, including ported cylinder heads, a ...

LS engine swaps are all the range, and while there is certainly a case to be made for the power potential of a solid LS-based small-block, the need for complicated electronic fuel injection scares ...

Hypothetically speaking, let's say you had the wrenching skills necessary to build a 600hp Rat motor for $6,500. With the astounding airflow potential of today's conventional, 24-degree, big-block ...

General Motors announced today that the 5.3-liter V8 found in both the GMC Sierra and Chevy Silverado has been SAE rated at 355 hp and 383 lb-ft of torque, and will get an estimated 23 mpg highway for ...

Engine, Vortec 5.3L V8 SFI with Active Fuel Management (320 hp [238.6 kW] @ 5200 rpm, 340 lb-ft of torque [459.0 N-m] @ 4200 rpm), iron block (Standard with CC10936 Models only.) ...

Every pickup truckbrand has its claims to fame, but when it comes to their engines, only a few ever reach legendary status. These are the ones that quietly outlast trends, hauling and towing their way ...

500+ hp from a junkyard 4.8L Vortec LS? Yep, and it's easier than you think. Sure, new crate engines are great if you have the cash, but there millions of engine possibilities sitting in junkyards all ...