Advertisement
WARNING: In some installations, the metal valley cover below the intake manifold may have been over-tightened which can cause
•
the upper edge of the cover to protrude out from the lower position of head. This results in an interference with the intake manifold.
If this condition occurs, the manifold will not seat properly against head surface and a misalignment of bolts to the head will occur. If
this is the case, tap metal valley cover down with a hammer to give clearance to manifold. This manifold will not accept 1968 and
earlier alternator bracket assembly or air conditioning rear support bracket and has no provision for ignition coil mounting.
PREP AND TUNING FOR POWER:
•
1. 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 Torker II intake manifolds. A basic ignition curve of 12° to 14° initial and a
total of 36° to 38° advance is a good starting point.
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 Torker-Plus 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.
CAMSHAFT AND HEADERS: Dual Quad manifolds are compatible with aftermarket camshafts and headers. Header primary tube
•
diameter should be 1-5/8" to 1-7/8" depending on the specific engine combination. Edelbrock has developed a camshaft for use with
this intake manifold - Torker-Plus #5057. Please check the catalog or website for rpm and application guidelines.
1) Use only recommended intake gaskets set when installing this intake manifold. For ease of installation, we recommend
Edelbrock Manifold Bolt and Washer Kit, #8559.
2) Fully clean the cylinder head intake flanges and the engine block end seal surfaces.
3) Apply Edelbrock Gasgacinch sealant P/N 9300 to both cylinder head flanges and to the cylinder head side of the gaskets,
allow to air dry, and attach the intake gaskets.
4) After setting intake manifold down on engine and starting all manifold bolts by hand, install water pump bolt and tighten so
the manifold seals against the water pump. NOTE: It may be necessary to shorten the water pump bolt if it bottoms out
before seating.
5) Torque all of the manifold bolts in two steps by the sequence shown in Figure 1 to 25 ft/lbs.
8
7
6
5
Figure 1 - 326-455 c.i.d. Pontiac Torque Sequence
Torque Bolts to 25 ft/lbs.
Edelbrock Corporation • 2700 California St. • Torrance, CA 90503
Catalog #5056
Rev. 7/05 - RS/mc
INSTALLATION INSTRUCTIONS
2
3
9
1
4
10
Tech Line: 800-416-8628 • E-Mail: Edelbrock@Edelbrock.com
Figure 2 - 326-455 c.i.d. Pontiac Firing Order
Firing Order: 1-8-4-3-6-5-7-2
Turn Distributor Clockwise to Advance Timing
Page 2 of 2
©2005 Edelbrock Corporation
Brochure #63-0423
Advertisement
