LS and LT Engine Reference Guide for the Gen. 3, Gen. 4 & Gen. 5 LS…
Apr 5, 2018 · Though the dozens of engines in the GM LS and LT families have many similarities, there are significant differences as well—and it’s important to know exactly what those are if …
General Motors LS-based small-block engine - Wikipedia
This family of blocks was the first of the Generation V small block with the LT1 being the progenitor of this family and generation. This family of blocks has seen a wide range of …
LS vs LT Engines: Key Differences in GM’s V8 Powerhouses Explained
Sep 28, 2024 · What Are LS and LT Engines? The LS and LT engines represent two distinct generations of General Motors’ small-block V8 engine families. Both platforms have …
LS vs LT Engine: Which Swap is Better? HP, Specs & Fitment …
Mar 27, 2025 · We’ve only touched on the most basic differences between LS and LT engines above. So, let’s dive deeper into each engine family, including their performance numbers, …
A Guide to the GM LS Engine Family - autoevolution
Apr 7, 2024 · Both the third- and fourth-gen families are called LS because of their similarities. Generation IV builds on Generation III with displacement on demand and variable valve timing, …
The Biggest Differences Between General Motors' LS & LT Engines
Jul 27, 2025 · Despite the generational gap, both the LS and LT engine families bring some serious strengths to the table. The LS remains the king of cost-effective performance, whether …
GM LS And LT Engines: What Sets Them Apart, And Which One Is …
Mar 3, 2025 · Both the LS and LT-series are phenomenal engines. The beloved, long-running, wildly successful LS is still a great choice for just about any application, and the high-tech LT …
Which LS Engines Are 5.3? Identifying the Variants
Jan 6, 2026 · Stop guessing! Learn how to positively identify every 5.3L LS engine variant, from iron block workhorses to aluminum performance models.
Everything You Wanted to Know About the GM LS Engine Family
Sep 10, 2022 · But this introduction should give you a place to start on your way to learning why the LS engine family has become the easiest way to make excellent street power.
LS/LT Encyclopedia: Modern GM Small-Block V-8s, Part 3
Dec 26, 2024 · This is part three—be sure to check out part one, which includes a quick backstory and then hops into the details of the most ubiquitous V-8 engine family of the 21st century, here.