GM Performance & Tuning

Leveling kit, lift kit or strut spacer for your Silverado or Sierra 1500? What each actually does, what it costs in wear and ride, and how to choose.

Colorado ZR2 and Canyon AT4X DSSV shocks worn out? Compare OEM replacement, specialist rebuild, long-travel DSSV and aftermarket coilover kits.

Performance accessories deliver the most noticeable results when they target specific, well-understood bottlenecks like airflow and braking rather than promising broad, unrealistic gains. Jump to a section: Intake upgrades ·...

The 670 hp Z06 tops out at 195 mph, one mph faster than the 490 hp Stingray — and the Z07 package drops it to around 188 mph. Verified top...

Yes, the C8's LT2 engine can be tuned through the aftermarket, though the process is more involved than tuning older GM platforms, thanks to GM's newer Global B electrical architecture...

Every C8 trim compared on power, torque and 0-60 — from the 490 hp Stingray to the 1,064 hp ZR1. Includes the three correct oil specifications and exactly which product...

A widebody kit goes well beyond a standard body kit's bolt-on splitters and skirts — it actually widens the car's overall body, requiring flared fenders and quarter panels along with...

A body kit for the C8 typically means aftermarket front splitters, side skirts, rear diffusers, or a full aero package designed to change the car's stance and appearance. Given the...

The Colorado and Canyon sit nose-down from the factory. That is deliberate — GM builds in rake so the truck sits level under load rather than empty. A leveling kit...

Real performance gains on a Camaro come from three systems: fuel delivery, exhaust flow, and handling. Here's where a modest investment actually translates into a car that goes, stops, and...

Lighting upgrades are one of the highest-impact changes you can make to a Camaro's look, especially after dark, and most factory-fit DRL boards and lens replacements are plug-and-play with no...

Nothing changes a Camaro's presence faster than graphics. Unlike a full respray, stripe and decal kits are reversible, affordable, and installable in an afternoon — which makes them the easiest...

It's one of the biggest purchase decisions a GM truck buyer faces: do you go with the tried-and-true gasoline V8, or step up to the diesel? The 6.6L Duramax in...

Whether you just bought a new Silverado or you've had yours for years, the right upgrades can transform your ownership experience — better performance, better towing, better looks, and more...