Chevrolet LS7 Engine Specs

The Chevrolet LS7 is a naturally aspirated OHV V8 petrol engine produced from 2006 to 2015, representing the largest-displacement naturally aspirated engine in GM's LS small-block family and one of the most celebrated factory performance engines Chevrolet has ever built. It was developed specifically for the C6 Corvette Z06 and later the fifth-generation Camaro Z/28, and remains a benchmark for what a naturally aspirated pushrod V8 can achieve without forced induction.

Producing 505hp and 637Nm of torque from a substantial 7,011cc, the LS7 uses titanium connecting rods and intake valves, a dry-sump oiling system to prevent oil starvation during high-lateral-g cornering (essential for its track-focused Z06 and Z/28 applications), a compression ratio of 11.0:1, and CNC-ported cylinder heads, all aimed at maximizing both peak power and high-RPM durability for genuinely serious track use in a way that goes well beyond a typical street-tuned small-block.

The LS7's specialized, motorsport-influenced engineering makes it stand somewhat apart from more mainstream LS family members in terms of maintenance and ownership considerations. The dry-sump oil system, while excellent for track use, is more complex than a conventional wet-sump system and requires familiarity with its specific service requirements, including multiple oil reservoirs and lines. Cylinder liner failure was a documented issue on a portion of early production LS7 engines, related to variability in the factory cylinder liner installation process; this is well known within the Corvette and LS enthusiast community, and any prospective buyer of an early LS7-powered Z06 should ask specifically about this history and any related warranty work performed. Despite this, properly built and maintained LS7s are capable of genuinely high mileage and sustained track use. Given the LS7's use exclusively in performance-flagship models, examples command a meaningful premium over more common LS engines, and verifying maintenance history - including oil system service and any liner-related work - is an important part of any purchase evaluation.