Installation instructions – Vortech 1996-2000 4.3L Truck/SUV User Manual

Page 5

P/N: 4GD020-010

26APR01 V1.2

(4.3L V-6/S-10-(4GD))

Before beginning this installation, please read through this entire instruction booklet and the Street Super-
charger System Owner's Manual and Warranty Registration form.
Vortech supercharger systems are performance improving devices. In most cases, increases in torque of 30-35%
and horsepower between 35-45% can be expected with the boost levels specified by Vortech Engineering. This
product is intended for use on healthy, well maintained engines. Installation on a worn-out or damaged engine is not
recommended and may result in failure of the engine as well as the supercharger. Vortech Engineering is not
responsible for engine damage.

Installation on new vehicles will not harm or adversely affect the "break-in" period so long as factory
break-in procedures are followed.

For best performance and continued durability, please take note of the following key points:

1. Use only premium grade fuel 92 octane or higher (R+M/2).
2. The engine must have stock compression ratio.
3. If the engine has been modified in any way, check with Vortech prior to using this product.
4. Always listen for any sign of detonation (pinging) and discontinue hard use (no boost) until problem is

resolved.

5. Perform an oil and filter change upon completion of this installation and prior to test driving your vehicle.

Thereafter, always use a high grade SF rated engine oil or a high quality synthetic, and change the oil and
filter at least every 3,000 miles. Never attempt to extend the oil change interval beyond 3,000 miles,
regardless of oil manufacturer's claims as potential damage to the supercharger may result.

6. Before beginning installation, replace all spark plugs that are older than 1 year or 10,000 miles with original

heat range plugs as specified by the manufacturer and reset timing to factory specifications (follow the
procedures indicated within the factory repair manual and/or as indicated on the factory underhood emissions
tag). Do not use platinum spark plugs unless they are original equipment. Change spark plugs every
20,000 miles and spark plug wires at least every 50,000 miles.

TOOL & SUPPLY REQUIREMENTS

• Factory repair manual
• 3/8" socket and drive set: SAE & metric
• Drill motor, 3/32" 5/8" and #16 drill bits
• Flat #2 screwdriver
• Open end wrenches: 5/16", 3/8", 7/16", 1/2", 9/16", 5/8",10mm

13mm, 15mm, 16mm, 17mm, 18mm

• 5mm Hex wrench
• Hammer
• Silicone sealer
• Oil filter wrench
• Oil filter
• SF rated quality engine oil
• Gasket scraper
• Punch (tapered)
• 3/8" NPT tap
• Fuel line disconnect tool
• Rota Broach (9/16) boring tool (Snap-on #GA219-A)

If your vehicle is in excess of 10,000 miles since its last spark plug change, then you will also need:

• Spark plug socket
• NEW spark plugs

1996-1999*

GM VORTEC 4.3L V-6 S-10/Sonoma/Jimmy/Blazer

Installation Instructions

50 State Smog Legal as per CARB EO #D-213-17

*1999 models Legal in California only for racing vehicles which may never be used upon a highway.

Congratulations on selecting the best performing and best backed automotive supercharger available today...

the VORTECH

V-2

supercharger!