What vehicles did the 5.7 Vortec come in?
General Motors placed the 5.7 liter L31 Vortec in several of its trucks, including the Chevrolet C/K, the Cadillac Escalade and the GMC Yukon. The L31 was the last engine to come out of the first-generation of Chevy small blocks.
What years are Vortec engines?
The Debut. From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads. Built of cast iron, these powerhouse heads upped the horsepower of these engines by magnitudes.
What vehicles had 4.3 Vortec?
The original 4.3L Vortec from the mid-80s, first offered in 1985, until the mid-90s was available in Chevrolet and GMC full-size trucks, G-series vans, Chevrolet Astro vans, GMC Safari vans, Oldsmobile Bravada, GMC Jimmy, Chevrolet Blazer, Chevrolet S-10, and GMC Sonoma for truck applications.
How do I know if my engine is a Vortec?
One easy way to identify the 5.7L Vortec engine is to examine the cylinder heads. The GM Industrial Vortec cylinder head was made by installing LT1 Corvette ports into an iron casting. The intake manifold bolts on with an 8-bolt pattern, unlike most other 5.7 GM heads that bolt on with a 12-bolt pattern.
What’s the difference between a Vortec 350 and a regular 350?
The regular 350 head uses a 90 degree bolt angle while the Vortec uses a 72 degree bolt angle. When the head is bolted to the engine, all the attachment bolts point straight up, as experienced mechanics know.
When did Chevy stop making Vortec engines?
They have been in production from 1996 till 2002, which means there are a lot of them out there. They are easy to install on older generation I SBC V8.
How do you tell if my 350 is a Vortec?
The bowl area is wider around the guide compared with regular 350 heads. The intake bolt pattern is different and utilizes an eight-bolt attachment. The bolt pattern and the number casting is the quickest way to differentiate a Vortec Head from a regular 350 head.
What year did GM make Vortec engines?
Vortec is a trademark that is on a line of piston engines for GM trucks. It was first used in 1986 on a 4.3-liter V-6 but now covers a wide range of engines.
What’s the difference between a Vortec motor and an LS motor?
The Vortec truck harness has a large portion up on top of the intake manifold, is supported by it, and is covered or hidden by the plastic engine cover. The LS engine harness is configured much differently and the intake manifold is exposed and uses valve covers to dress up the engine.
How do you tell if my 4.3 is a Vortec?
Locate the GM 4.3 engine serial number on the left (remember, engines are always viewed from the rear; if the engine were in a vehicle, the left side is the driver’s side) front bank under the cylinder head. Record the last two letters of the number.
Is there a V6 Vortec?
The 4.3L V6 Vortec LU3 is an engine produced by General Motors for use in full-size light-duty pickup truck and vans.
Is a 4.3 Vortec an LS?
Just like the 4.3 had been the first engine to be branded ‘Vortec,’ so would it be the last, as it soldiered on separately from the LS. There was one more major refresh in store for the 4.3 for the 2003 model year, and that was the introduction of multi-point fuel injection.
Is a Chevy 5.3 a LS engine?
The cheapest of the LS engine family is the 5.3L truck engine since it came in most of the trucks and SUVs that Chevrolet has produced.
Are Vortec heads aluminum?
Aluminum cylinder heads are standard on the ZZ4 and feature 58cc chambers, 1.94-inch intake valves, and 1.50-inch exhaust valves. … The heads that were tested included the two versions of the Vortec Bow-Tie, as well as the GM’s Vortec truck head, Fast Burn aluminum head, and the stock aluminum ZZ4 production head.
Is the 5.7 Vortec an LS motor?
Most 99+ V8s from GM were built on the LS architecture. This includes the vortec engines, so technically they are LS engines as well (4.8, 5.3, 6.0, and some newer 6.2 engines).