Edelbrock 5486 User Manual

PERFORMER BUICK V6 INTAKE MANIFOLD

For Buick 231-252 C.I.D. V6 Engines

Catalog #5486

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.
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: Designed for 1979 and later street 231/252 C.I.D. (252 C.I.D. 1980-1984 only) Buick V6 engines, with late-model cylinder

heads.  Manifold will not fit pre-1979 engines.  Manifold is not compatible with C-3 and C-4 electronic fuel management systems.

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EGR SYSTEMS: Intake manifold will not accept stock EGR (Exhaust Gas Recirculation) equipment.  EGR systems are used on most
1972 and later model vehicles.  Check local laws for requirements.

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ACCESSORIES & INSTALLATION ITEMS: Major recommendations are listed below.  See our catalog for details.  To order a catalog,
call (800) FUN-TEAM, or visit www.edelbrock.com.

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CARBURETOR RECOMMENDATIONS:

A - Carburetor will work with non-EGR or pre-emission control systems.

I - Carburetor has no provisions for evaporative canister.

K - Carburetor requires #8008 or #8024 stud, washer and nut kit.  Determine proper length based on gasket thickness and your accessory

mounting requirements.

N - Carburetor accepts factory cruise control

O - Carburetor comes with manual choke.  It can be converted to electric choke using kit #1478.

CARBURETOR

REFERENCE

PARTS REQUIRED FOR INSTALLATION

Performer #1403 (500 cfm)

A, I, K, N

Performer #1404 (500 cfm)

A, I, K, N, O

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WATER NECK: If your original water neck housing does not fit, use a replacement water neck for a 1981 Buick Regal.

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GASKETS: Do not use competition-style intake gaskets for this street manifold.  Due to material deterioration over time, internal

leakage of vacuum, oil, and coolant may occur.  Use only Fel-Pro #1200 or OEM equivalent when installing this manifold for street
applications.

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PREP AND TUNING FOR POWER:
1. 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) 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 intake manifolds. 
4) Installation of aftermarket headers or camshafts may lean the carburetor calibration.   Should this occur, recalibrate with a richer

jet.

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CAMSHAFT AND HEADERS: Performer manifolds are compatible with aftermarket camshafts and headers.  Header primary tube
diameter should be 1-5/8” depending on the specific engine combination.  Edelbrock has developed a camshaft for use with this intake
manifold;  Performer-Plus #5487.  Please check the catalog or website for rpm and application guidelines.