Engine Guides

GM LR4 Engine Guide and Specs
Engine Guides / LS Engines

LR4 4.8L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

The LR4 is a 4.8L iron block truck engine that was introduced in 1999. Along with the LM7 and LQ4, they were the first LS truck engines. The LR4 was available […]

GM LH6 Engine Guide
Engine Guides / LS Engines

LH6 5.3L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

The LH6 engine is a 5.3L Gen. IV aluminum engine that replaced the LM4 in 2005. It was the first Gen. IV LS truck engine and offered Active Fuel Management […]

Engine Guides / LS Engines

LFA 6.0L Engine Upgrade Guide: Expert Advice for LFA Engine Mods to Maximize Performance

[Editor’s Note: This LFA engine upgrade guide is the second in a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing. The LFA engine […]

GM LFA LS Engine Spec Guide
Engine Guides / LS Engines

LFA 6.0L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

The LFA is a 6.0L, Gen. 4 small block engine used in GM hybrid trucks and SUVs between 2008 and 2009. The LFA was upgraded with AFM and VVT. For marketing […]

Engine Guides / LS Engines

LH8 5.3L Engine Upgrade Guide: Expert Advice for LH8 Engine Mods to Maximize Performance

[Editor’s Note: This LH8 engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. […]

GM LH8 Engine Guide
Engine Guides / LS Engines

LH8 5.3L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

The LH8 is a 5.3L Gen. IV aluminum block engine truck engine that appeared in 2008-09 GM trucks, including the Hummer H3, Chevy Colorado, and GMC Canyon. The engine specs […]

Engine Guides / LS Engines

L20 4.8L Engine Upgrade Guide: Expert Advice for L20 Engine Mods to Maximize Performance

[Editor’s Note: This L20 engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. […]

GM L20 Engine Guide
Engine Guides / LS Engines

L20 4.8L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

The L20 is a 4.8L Gen. IV iron block truck engine. It replaced the LY2 in 2010. It was upgraded with Variable Valve Timing (VVT) and Flex Fuel technology. It […]

Engine Guides / LS Engines

L76 Car Engine Upgrade Guide: Expert Advice for L76 Car Engine Mods to Maximize Performance

[Editor’s Note: This L76 engine upgrade guide is the second in a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing. The L76 engine […]

GM LS LS76 Engine Guide
Engine Guides / LS Engines

L76 Car Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

The L76—like its LS2 sibling—is a 6.0L, Gen. 4, aluminum small block engine that was used both in GM cars and trucks. The L76 is an adapted version of the LS2, […]