The Edelbrock RPM Air-Gap #7516 intake manifold has been designed for 262-400 c.i.d. small-block Chevy engines equipped with Vortec style cylinder heads. The manifold accepts late model water neck, air conditioning, alternator and H.E.I. ignition systems. Use the recommended electric or manual type choke square bore carburetors only. This intake manifold is recommended for street high performance and race vehicles only. The RPM Air Gap manifold provides good low rpm response for street performance vehicles while providing increases in horsepower and torque up to 6500 RPM. When used with any mix of aftermarket equipment designed for this operating range, the performance increases will be even greater.

EGR SYSTEMS: This manifold will not accept stock EGR (Exhaust Gas Recirculation) equipment or exhaust-heated chokes. EGR systems are used on some 1972 and later model vehicles and only in some states. Check local laws for requirements. This manifold is not legal for use on any emissions controlled vehicle where such equipment is required.

INSTALLATION INSTRUCTIONS
1) Use only a GM #12529094 intake gasket set when installing this intake manifold.
2) Fully clean the cylinder head intake flanges and the engine block end seal surfaces.
3) Install the intake gaskets to the cylinder head intake flanges. Two dowels on the intake manifold gasket will locate into dowel holes in the cylinder head. Do not use any type of gasket sealer on the intake gaskets. The O-rings are designed to seal without chemical sealers.
4) Do not use cork or rubber end seals. Use RTV silicone sealer instead. Apply a º” high bead across each block end seal surface, overlapping the intake gasket at the four corners. This method will eliminate end seal slippage and deterioration.
5) Install the intake manifold bolts. Apply Loctite 242 to the intake bolt threads. Carefully tighten the intake manifold bolts evenly until the intake manifold has compressed the o-ring section of the gasket. Torque all of the manifold bolts in the sequence shown in Figure 1 to 11 ft/lbs.

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