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©2005 Edelbrock Corporation
Brochure #63-0180Page 1 of 2
3-Pc Single Carburetor Intake Manifolds for H-D
Rev. 12/05 - RS/mc
PERFORMER 3-PIECE, SINGLE CARB INTAKE MANIFOLDS
for 1984 & Later Harley-Davidson® Evolution®
“Big Twin”, and 1999 & Later Twin Cam 88 Engines
INSTALLATION INSTRUCTIONS
PLEASE study these instructions carefully before beginning this installation. Most installations can be accomplished with common tools and
procedures. However, you should be familiar with and comfortable working on your vehicle. If you do not feel comfortable performing this
installation, it is recommended to have the installation completed by a qualified mechanic. If you have any questions, please call our Technical
Hotline at: 1-800-416-8628, 7:00 am - 5:00 pm, Pacific Standard Time, Monday through Friday or e-mail us at
edelbrock@edelbrock.com. If your question is motorcycle carburetor-related, please call our Edelbrock Motorcycle Carburetor division
at 1-877-888-7504, Ext. 2.
IMPORTANT NOTE: Proper installation is the responsibility of the installer.
Improper installation may result in poor performance and engine or vehicle damage.
PLEASE complete and mail your warranty card. Be sure to write the model number of this product in the "Part #____" space. THANK YOU.
DESCRIPTION: The Edelbrock Performer 3-piece intake manifolds are designed for street high performance use with Edelbrock Performer or
Performer RPM heads only. Some manifolds are for grommet-mount carburetors, and others fit flange-mount carbs (see chart on next page).
These intake manifolds are designed to make excellent power increases in the stock rpm range of the Harley-Davidson
®
Big Twin
®
engine (idle
to 6000 rpm). These manifolds and heads feature a rectangular shaped intake port for a noticeable increase in air flow. This .125" raised
rectangular intake port also helps to increase the velocity of the incoming air for more power. These intake manifolds can only be used
on Edelbrock heads because of the unique port shape. Performer manifolds fit 1984 and later Evolution
®
"Big Twin" motors with Edelbrock
Performer or Performer RPM heads, and 1999 and later Twin Cam 88 motors with Edelbrock Performer RPM heads.
When used with Performer cylinder heads, Performer intake manifolds are street legal in all 50 states. (C.A.R.B. E.O. Call Edelbrock for
detailed information).
MANIFOLD INSTALLATION
NOTE: Manifold installation will usually be performed along with
installation of Edelbrock cylinder heads. Refer to cylinder head
instructions for step-by-step procedures, if necessary. These
instructions cover only the procedures that apply to Edelbrock 3-
piece intake manifolds.
1. Inspect manifold for any nicks or other damage on the sealing
surfaces.
2. On Twin Cam 88 motors, transfer the MAP sensor from the stock
manifold, lubricate the seal with lightweight oil and secure with
the 8-32X1/4 socket head cap screw provided in kit
3. Note that flanges are marked front and rear. Place flanges on
manifold with the 30° tapered side facing out (toward the head)
and the slotted bolt holes to the rear of the manifold.
4. Lubricate grommets with a lightweight oil such as fork oil or
brake assembly lube (not brake fluid) Note that the grommets
are rectangular, and will only fit on manifold one way. Push
grommets onto manifold as far as they will go.
INSTALLATION PROCEDURE
5. Place manifold in position on cylinder heads, being careful not to
pinch or fold-over grommet.
6. Start all four manifold bolts and washers by hand, then tighten
each bolt gradually, moving from bolt-to-bolt in small steps.
There is no room for a torque wrench, but final torque should be
very firm (18-23 ft./lbs.). If desired, you may use a non-
permanent locking compound, such as green Locktite
®
, on bolt
threads.
NOTE: You must use the AN washers supplied on the
manifold bolts to prevent over-stressing and cracking the
flanges.
CARBURETOR MOUNTING
Because the 3-piece manifold “floats” between the two cylinder
heads, it is very important that the carburetor is properly supported
to prevent manifold droop and resultant leakage at the grommets. Be
sure that the air cleaner backing plate is secured or that the
necessary air cleaner support brackets are used.
REPLACEMENT PARTS
Replacement grommets and flanges are available through your local
motorcycle shop.
Evolution and Harley are registered trademarks of Harley-Davidson, Inc., Milwaukee, Wisconsin, USA and are used in this brochure for reference only.
Edelbrock is a registered trademark of Edelbrock Corporation, Torrance, California.