Every Generation of General Motors LS Engine Ranked Worst to Best

10. LS376/525 – “LS3 With a Factory Power-Up”

What happens when you take an LS3 and slap on GM’s ASA race cam? You get the LS376/525 — 525 hp and 486 lb-ft of torque right out of the crate. It’s basically a pre-modded LS3 with a warranty. That’s peace of mind you don’t get from a sketchy eBay engine.

Sure, you could build a clone with a cam swap. But this one’s hand-assembled and ready to rock. For people who want plug-and-play power without wrenching too much, this crate engine’s a no-brainer.