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INTAKE MANIFOLD TEST FIT PROCEDURE: Use the following test fit procedure to ease manifold installation.
NOTE: On some models, there are dowel pins in the front valley gasket surface of the engine block. Remove any dowel pins before test
fitting or installing the intake manifold.
1.
Position gaskets on cylinder heads. Do not use any sealant or adhesive at this time.
2.
Position intake manifold and start all bolts by hand.
3.
Install the distributor with the intake manifold still loose.
4.
Make sure the distributor seats all the way down.
5.
Install pushrods and rocker arms.
6.
Check pushrods for alignment and clearance through the intake manifold.
7.
Pushrod clearance to the intake manifold may be increased by backing of the rocker arm support stand bolts and pushing the stand
towards the rocker arm and pushrod that is interfering with the intake manifold.
8.
Grind manifold for clearance if necessary.
NOTE: If other than stock pushrods are used, you may have a clearance problem that will require grinding or shimming of the rocker
arms for alignment and clearance.
WATER HEATER SPACER BLOCK: Due to the possible lack of hood clearance, you may not be able to use the OEM water heater spacer
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block between the intake manifold and carburetor. If necessary, use approximately two feet of 5/8" heater hose and make a direct connection
to bypass the spacer block.
PREP AND TUNING FOR POWER:
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NOTE: Local emission laws must be checked for legality of any carburetor or ignition changes.
Performer Series Intake Manifolds
1.
The long equal length runners in the Performer manifold create a very strong signal to the carburetor. In some applications, the stock
rods or jets may need changing for best overall performance. Refer to your carburetor owner's manual for details.
2)
Performer manifolds deliver excellent driveability and power utilizing stock distributor settings. Some applications may benefit from
resetting the initial advance ±2° from the factory specification.
3)
Aftermarket ignitions and more aggressive advance curves may be used with Performer packages.
4)
Installation of aftermarket headers or camshafts may lean the carburetor calibration. Should this occur recalibrate with a richer jet.
Performer RPM / RPM Air-Gap Series Intake Manifolds
1.
Due to design, the fuel / air mixture and cylinder charging are very efficient with Performer RPM or RPM Air-Gap manifolds. Generally
speaking, the stock jetting for a Performer Series or Thunder Series carburetor will not need changing. Specific applications may show
an increase in power by tuning the fuel mixture.
2.
Aftermarket distributor curve kits may be used with Performer RPM series manifolds.
3.
Use modified or high performance cylinder heads such as our Performer RPM, and port-match the manifold to the heads.
4.
The compression ratio should be at least 9.5 to 1 to work properly with Performer RPM camshafts.
5.
Installation of aftermarket headers, camshafts or both with an Edelbrock Performer RPM series manifold may lean carburetor calibration.
Should this condition occur, recalibrate with a richer jet.
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CAMSHAFT AND HEADERS: The Performer Series manifolds are compatible with aftermarket camshafts and headers designed to work in
the idle-5500 rpm range. Edelbrock has developed a dyno-matched, street proven camshaft (#2106 for 352-428 c.i.d. engines) for use with
Performer Series intake manifolds. Header primary tube diameter should be 1-5/8" - 1-3/4" (depending on engine displacement). Performer
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 (#7106 for for 390-428 c.i.d. engines) for use with Performer RPM series manifolds
(see catalog for details). Header primary tube diameter should be 1-7/8" - 2" (depending on engine displacement).
©2013 Edelbrock LLC
Rev. 5/14/13 - QT/mc
Catalog #2105, 21053, 7105, 71053, 71054, 7507, 75054
Page 3
Brochure #63-0275
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