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SPECIAL INSTRUCTIONS:
With the Edelbrock manifold and camshaft package installation, a
carburetor jet change and ignition timing changes may be required for
best performance. Due to the varied applications of years and models of
vehicles, no one combination could suffice for all installations. The
following procedure is only a guideline.
IGNITION TIMING:
Increase initial setting to 14° BTDC (Before Top Dead Center). Total
advance not to exceed 38°. To select the proper distributor vacuum
advance port on your carburetor, we suggest the following procedure.
Before removing the vacuum line from your carburetor, with the engine
idling, pull the hose off the port that routes to the vacuum advance
Firing Order: 1-3-7-2-6-5-4-8
Figure 1 - 351 c.i.d Windsor (351W) Ford V8
Firing Order and Timing Marks
Turn distributor clockwise to advance timing
Edelbrock Corporation • 2700 California St. • Torrance, CA 90503
Tech-Line: 1-800-416-8628 • E-Mail: Edelbrock@Edelbrock.com
Catalog #2281
Rev. 4/07 - RS/mc
canister. After the hose has been removed from the carb, place your
finger over the vacuum outlet. If (at idle), you feel your finger being
sucked in toward the carburetor, you have full-time vacuum advance. If
you do not feel any vacuum pulling at your finger with the engine at an
idle, you have timed/ported vacuum advance.
HEADERS & EXHAUST SYSTEM:
For best performance, headers are recommended. They should be 1-
3/4" in diameter, approximately 31" long, with a 3" collector should be
used.. The exhaust system should consist of dual exhaust pipes, at least
2" diameter with low back-pressure mufflers such as the Edelbrock SDT
Series mufflers. Please consult your Edelbrock dealer or the Edelbrock
catalog for a listing of available Edelbrock SDT Mufflers.
Timing
Marks
Figure 2 - Timing Chain Sprocket Alignment
®
Page 4 of 4
©2007 Edelbrock Corporation
Brochure #63-2281
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