Vortech 1994-1995 7.4L TBI Truck/SUV - Manual (Page 5)

P/N: 4GC020-010
©2001 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
15SEP01 V1.1 (88-95 GM Lt Trk(4GC))
Congratulations on selecting the best performing and best backed automotive
supercharger available today... the VORTECH ® V-2 ® Supercharger!
Before beginning this installation, please read through this entire instruction booklet and the Street
Supercharger System Owner's Manual which includes the Limited Warranty Program and the Warranty
Registration form and return envelope.
Vortech supercharger systems are performance improving devices. In most cases, increases in torque of 30 to
35% and horsepower of 35 to 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
every 3,000 miles or less. 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 15,000 miles and spark
plug wires at least every 50,000 miles.
1988 - 1995
GM 7.4 LIGHT TRUCK
Installation Instructions
50 State Smog Legal, as per CARB EO #D-213-17
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TOOL & SUPPLY REQUIREMENTS
• Factory Repair Manual
• Timing Light
• 3/8" socket and drive set: SAE and Metric
• Drill motor, 3/32" and .046" drill bits
• 1/2" breaker bar and 4" extension
• Large screwdriver or pry bar
• 3/8" NPT tap and handle or socket
• Flat #2 screwdriver
• Phillips #2 screwdriver
• Center punch and 3/4" drift punch
• Open end wrenches: 3/8", 7/16", 1/2, 9/16", 5/8", 3/4", 7/8", 10, 13 & 15mm
a "Slimline" 19mm - Snap-On part # LTAM1719
• Power Steering Pulley Puller & Installer (1994 models only)
Snap-On Puller #CJ117B2
Snap-On Installer #CJ113B
If your vehicle has in excess of 10,000 miles since its last spark plug change, then you will need:
• Spark plug socket
• NEW spark plugs
• Hammer
• Adjustable wrench
• Oil Filter Wrench
• Oil Filter
• SF Rated Quality
(or synthetic) Engine oil
• Heavy grease Silicone
sealer