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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.
SPECIAL NOTE: This intake manifold is primarily intended for use with Vortec heads on pre-Vortec blocks. Standard
engine blocks route thermostat bypass water from the block directly to the water pump through the passenger side
water pump mounting flange. If the manifold is used on a 1996 and later Vortec engine that does not have the
in-block bypass passage, you must route a thermostat bypass hose from the water bypass port on the front of
the manifold to the 5/8” hose nipple on the passenger side of the Vortec water pump. Use a 3/8” pipe to 5/8”
hose nipple fitting, and a 7” length of 5/8” hose to accomplish this. If your engine block has the thermostat bypass
passage, use the 3/8” NPT plug supplied in the kit to plug the bypass port in the front of the intake manifold.
PREP AND TUNING FOR POWER:
1) The long equal length runners in the RPM Air-Gap manifolds create a very even air/fuel mixture distribution.
In general, the stock jetting in the recommended carburetor will not need changing. Refer to your carburetor
owner’s manual for details.
2) Aftermarket ignitions and aggressive advance curves are recommended with Performer RPM packages.
Use modified (three-angle valve job, bowl blend, and port-matched) stock heads or for the best results use
Edelbrock aluminum ETEC 170cc or 200cc heads.
CAMSHAFT AND HEADERS:
The RPM Series manifolds are compatible with aftermarket camshafts and headers designed to work in the 1500-
6500 rpm range. Edelbrock has developed a dyno-matched, street proven camshaft, the #7102 for use with the
#7116 manifold. This camshaft requires the use of high performance adjustable rocker arms, studs, retainers, and
Edelbrock Sure-Seat valve springs #5703 on factory iron heads. Valve Spring kit #5794 provides high performance
retainers, valve locks, and the correct Edelbrock Sure-Seat valve springs in one package. (Note: With Vortec cylinder
heads the retainer to seal clearance needs to be checked when using the 7102 camshaft and the 5794 valve spring
kit. Modification of the valve seal boss may be required.) Recommended compression ratio is 9.5 to 1. Header
primary tube diameter should be 1-3/4”. Use of aftermarket headers, camshafts, or both, with an Edelbrock RPM Air
Gap manifold may lean carburetor calibration. Should this occur, recalibrate with a richer jet.
PLEASE complete and mail your warranty card. Be sure to write the model number of this product in the
“Part #________” space. THANK YOU.
2000 Edelbrock Corp.
Edelbrock Corporation•2700 California Street•Torrance, California 90503 Rev. 10/30/00
C:\WINWORD\Installation Instruction\7516-Small Chevy Vortec RPM Air Gap Manifold.Doc