GM Genuine Parts 350 Small-Block Engine Banner GM Genuine Parts 350 Small-Block Engine Logo

Big Legend.

An all-new take on an American classic.

Born from the Jet Age, the iconic 350 engine sent Corvette, Camaro, and Caprice to the races before establishing itself as a versatile workhorse. Designed, engineered, tested, and backed by General Motors, the all-new 350 combines unyielding heritage with modern precision machining. And that adds up to another generation of service.

GM Genuine OE Parts Benefits - OE Designed,Engineered & Tested
GM Genuine Parts and ACDelco offer a global network of auto parts


Proudly machined and assembled in the USA.
Built in Springfield, MO, of globally sourced parts.

What's New

  • Cylinder head and block castings
  • Forged-steel crankshaft
  • All blocks are four-bolt main
  • All blocks are roller camshaft-ready
  • All blocks are mechanical fuel pump-capable (Gen1e has no camshaft eccentric)
  • Machined using state-of-the-art CNC
  • Machined and assembled in the USA
  • Three engine variants: Gen1 (P/N 12691671), Gen1e LD (P/N 12691673), and Gen1e HD (P/N 12691672)

What’s Included

  • All-new, non-remanufactured engine assembly
  • New valve covers, oil pan, timing cover, and harmonic balancer for convenient installation
  • End-of-line torque-to-turn, compression, and oil-pressure testing
GM Genuine Parts and ACDelco auto parts are GM-Made and GM Backed by a variety of limited warranties

Powerful Nationwide Warranty Coverage

The all-new 350 includes a transferable 3-year/100,000-mile limited warranty* honored at a broad network of service locations. More information is available here because to us, standing tall is standing by you.

Get Yours

There’s an easy way to get your hands on the all-new 350. Just contact your preferred GM dealership. And then trust that proven performance will be matched to the same fit, form, and function you’ve come to expect from GM Genuine Parts.