When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Did you know we offer a database on LS engine RPO codes? We know some members use it since we’ve seen you share the info in your posts. That’s great, we’re here to help everyone be more knowledgeable about these engines. If you weren’t aware, we’re here to show it and shed light on it.
First things first, where is this database and how do I find it? It’s in our Help Center and can be found by searching Identify Chevy LS Engines by VIN.
What’s in the database? We have Gen 3 and 4 engines listed. The RPO codes are broken down by generation, car or truck, and block material. To give you an idea of what it looks like see the chart below.
So you know your RPO code what other info can it provide? We have a plethora of info on all the RPO codes. Click the blue RPO code and it will take you to a page on that specific code. This page will provide a ton of info on the given code. Everything from performance specs, applications, block specs, rotating assembly, heads, cams, etc. You name it we have the info and then some.
Here’s a hint at what a RPO code page will look like.
Don’t know your VIN and need to identify your engine? Check out our Identify LS engine by inspection article. This walks you through how to identify an LS by its external features. It will guide you through each step. The end result typically provides a few possibilities and provides an intro page to view the differences of those particular engines.
These are tools that our representatives use on a day to day basis. We figured if it’s helpful to us it’s helpful to our customers and fellow forum members.
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Summit Racing LS RPO Code Database 
