Intake Manifold

V6-229, 262 & ALL V8 ENGINES EXC. 1984-88 CORVETTE & 1985-88 V8-305 W/EFI

1. Disconnect battery ground cable, drain cooling system and remove air cleaner.
2. Disconnect accelerator, transmission and cruise control linkages, as equipped.
3. Disconnect fuel line from carburetor or TBI unit and remove fuel line clips as needed.
4. Disconnect necessary vacuum hoses and electrical connectors, noting position for installation.
5. Disconnect upper radiator and heater hoses from manifold.
6. Disconnect high tension leads from spark plugs in right side of engine and remove distributor cap, rotate crankshaft until No. 1 cylinder is at TDC on compression stroke, mark position of distributor rotor, then remove distributor.
7. Remove ignition coil, AIR pump, cruise control servo and brackets, as needed.
8. Remove generator upper mounting bracket and EGR solenoids.

Fig. 6 Intake manifold tightening sequence. 1982---84 V6-229 & 1982---88 V8 carbureted engines:

Fig. 7 Intake manifold installation.:

Fig. 8 Intake manifold tightening sequence. 1985---88 V6-262 engine:

9. Remove manifold retaining bolts and the manifold. It may be necessary to remove carburetor, EGR valve and/or idle control solenoid to provide clearance for manifold bolt removal.
10. Ensure surfaces are clean and dry, then apply 3/16 bead of RTV sealer on each block ridge and apply suitable sealer around water outlets, install gaskets and secure gasket position by extending bead of sealer approximately 1/2 inch onto gasket ends.
11. Install manifold and retaining bolts, ensuring areas between case ridges and manifold are completely sealed.
12. Torque manifold bolts to specifications in sequence shown in Figs. 6, 7 and 8, then reverse remaining procedure to complete installation.