user manual

P/N: 4GP020-015
©2006 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
30MAY06 SmallBlockChev(4GP..015v1.1)
ii
Proper installation of this system requires general automotive mechanic knowl-
edge and experience. Please browse through each step of this instruction
manual prior to beginning the installation to determine if you should refer the
job to a professional installer/technician. Please call Vortech Engineering for
installers in your area.
FOREWORD
© 2006 VORTECH ENGINEERING, LLC
All rights reserved. No part of this publication may be reproduced, transmitted, transcribed,
or translated into another language in any form, by any means without written permission
of Vortech Engineering, LLC
Important Installation Notes:
• This system was designed to fit on engines equipped with a “long” water pump.
and OEM V-belt drives or serpentine accessory drives (OEM TPI/TBI) applica-
tions, 1990-1995 and GM Performance Parts accessory drive system #’s
12497697, 12497698 and 12497869). For correct belt alignment, the proper
accessory drive crank pulley and accessory bracketry must be used. These
components are not supplied in this kit. Earlier models equipped with short
water pumps will require a long water pump to be installed.
• This kit can be used on engines with and without power steering. For engines
equipped with power steering and V-belt accessory drives, a Saginaw type
pump will be required as well as an optional Vortech power steering pulley
assembly. This assembly includes all required hardware, tensioner assembly
and anodized billet aluminum pulley. Depending on the vehicle, power steering
lines may require fabrication.
— Optional Vortech power steering pulley and hardware assembly: 4GP110-051
The following carbureted system support parts are not included as part
of the system but are available from Vortech:
1. Supercharger pulleys and retainer assembly: contact techical department for proper
application match.
• Vortech #2A031-250: Ø2.50", 10-rib driven pulley
• Vortech #2A031-275: Ø2.75", 10-rib driven pulley
• Vortech #2A031-295: Ø2.95", 10-rib driven pulley
• Vortech #2A031-312: Ø3.12", 10-rib driven pulley
• Vortech #4MA018-051: Ø7.00", 10-rib drive (crank) pulley
2. Compressor bypass valve and flange: (Contact the technical department to deter-
mine the proper valve selection for the application)
• Vortech #4GP012-031: Ø3" aluminum discharge duct w/attached flange for
Vortech race bypass valve. Simple attachment to supplied silicone discharge
elbow contained in #4GP218-030/-038
• Vortech #8D204-001: Race Bypass Valve
• Vortech #8D004-052: Race Bypass weld-on flange (aluminum)
• Vortech #8D103-001: Mondo Bypass Valve
• Vortech #8D003-052: Mondo Race Bypass weld-on flange (aluminum)
• Vortech #8D205-003: BV57 Bypass Valve
• Vortech #8D005-051: BV57 Bypass weld-on flange (aluminum)
3. Custom fuel line/fitting kits for carburetor, stainless steel (designed specifically for
Vortech carburetor enclosure)
• Vortech #8M110-020: Holley 4150 series (w/dual metering blocks), SS fuel line kit
• Vortech #8M110-030: Demon series, SS fuel line kit
4. Aftermarket ignition amplifier (not required, but recommended)
• Vortech #5A001-008: Crane HI-6 ignition amplifier box w/rev-limiter
• Power steering pulley and hardware assembly as described above
• Vortech #4GP110-051
5. Carburetor air diffuser. Straightens airflow into the carburetor for improved
response/driveability
• Vortech #8M011-001: Ø5.75" x 2.50" tall carburetor air-diffuser, stainless steel