How to identify your Vortec engine-my Pro Street?

Another convenient way to identify your Vortec engine, a look at the 8th digit of your VIN number will easily identify what you have. T = 5.3L LM7 V= 4.8L LR4 Z = 5.3L L59 U = LQ4 N = LQ9

Why does my truck have the word Vortec on it?

This is primarily because of many trucks and vans in the mid 80s having the word VORTEC stamped somewhere on the intake manifold or piping. This is based on the TBI engines that preceded the GEN III shortblocks, which used cylinder heads known for a terminology known as swirl vane.

What kind of engine does Vortec 6.0 have?

The Vortec 6.0 has 9 variations – the LQ4, LQ9, L76, L77, L96, L98, LY6, and the hybrid LFA and LZ1. The most sought-after engine versions are said to be the LQ4 and LY6.

What are the parts numbers on a Vortec engine?

Early model Vortec cylinder heads use two different castings to comprise the primary part number of 125508060. These heads are nearly identical but the castings numbers are 12558062 and 10239906.

How many engine variations does a Chevy Vortec have?

The engine went through two different variations during its lifespan, Gen III and Gen IV. Across both generations the Vortec 5.3 had 10 different engine variations used across the Silverado, Sierra, Suburban, Avalance, Yukon, Tahoe, and a number of other less popular Chevy and GMC vehicles.

What is the VIN code for a Chevy Vortec 5.3?

Across both generations the Vortec 5.3 had 10 different engine variations used across the Silverado, Sierra, Suburban, Avalance, Yukon, Tahoe, and a number of other less popular Chevy and GMC vehicles. Vortec 5300 Gen III Engine Codes: LM7 (1999-2007, vin code ‘T’) L59 (2002-2007, vin code ‘Z’)

What’s the mileage of a Chevy Vortec 5.3?

Before we dig into the common problems, let’s talk about engine reliability. The Vortec 5.3 is widely regarded as extremely reliable, with most engines having a lifespan within the 200k-300k mileage range.

Are there any problems with the Chevy Vortec 5300 engine?

Various Gen III and Gen IV engines (LR4, LM7, LH6, L33, and L59) had their cylinder heads manufactured by Castech. A number of the Castech heads were found to have a manufacturing defect, which would lead to a crack in the head in a very specific location.