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Performer Q-Jet Carburetors for Thermo-Quad Applications
Catalog #1905
for non-computer controlled 1972-1985 Chrysler 360, 400 & 440 V8s
PostScript Picture
(Edelbrock B/W Logo.eps)
INSTALLATION INSTRUCTIONS
PLEASE study these instructions carefully before installing your new carburetor. If you have any questions or problems,
please call our Carburetor Technical Hotline at: (800) 416-8628 or e-mail us at edelbrock@edelbrock.com.
DESCRIPTION
The Edelbrock Performer Q-Jet Carburetor for Thermo-Q
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CARBURETOR REMOVAL (Continuation) 7. Remove mounting nuts or bolts and or washers. Be sure to put them where they won't fall into the intake manifold upon carburetor removal. 8. Remove carburetor, being careful not to spill any dirt into the intake manifold. Immediately place a clean rag into the manifold to keep foreign objects out. 9. Thoroughly remove old mounting gasket and clean mounting surface. CARBURETOR PREPARATION 1. Install throttle adapter bracket on throttle arm (see Figure 2).
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FINISH INSTALLATION 1. Re-connect throttle linkage, wires, hoses, etc. Your Edelbrock carburetor may have more vacuum outlets than the original. Leave the caps on those outlets which won't be used. It is also required for proper operation that you bypass the vacuum amplifier and vacuum reservoir as seen in figure 3 & 4 . The throttle positioner may also be removed on some applications. 2. Re-connect the air cleaner being careful not to over- tighten the mounting nut which could damage the ca
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IDLE MIXTURE ADJUSTMENT The Edelbrock Performer Q-Jet Carburetor for Thermo-Quad applications has conventional Idle Mixture Screws (IMS) that provide a leaner Air/Fuel (A/F) ratio when turned clockwise and richer A/F ratio when turned counterclockwise. The idle air flow is controlled by a conventional screw that opens the primary throttles. The following procedure should be used to set the idle mixture and speed: 1. Fully warm engine and ensure choke is fully open. 2. Install air cleaner. 3.
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LEGEND A - Diverter Port I - Idle Speed Screw B - Choke Pull-down J - Accessory Port C - Fuel Inlet K - Bowl Vent D - Exhaust Gas Recalculation (EGR) Port L - Hot Air (#1903 only) E - Idle Mixture Screws M - Fast Idle Screw F - Positive Crankcase Ventilation (PC V) Port N - Clean Air (#1903 only) G - Canister Purge O - 1/4" N.P.T. (Power Brake Port) H - Distributor Port J B K C H L D G E F M E I Fig. # 5 N O A Fig. # 6 © 2001 Edelbrock Corporation Page 5 of 6 Rev. 10/01 Brochure No. 63-001
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