The P/N 701-1BD BLACK DIAMOND® intake manifold is designed for square-bore carburetor applications on 1957-86 262-400cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). Also, this manifold will work with any SBC engine equipped with aftermarket cylinder heads, as long as they have a standard port flange opening and bolt hole locations.

This 180° dual plane intake manifold is designed to provide the best performance for stock to street-performance engine applications to a maximum engine speed of 5500 RPM. The carburetor-mounting pad is designed to accept all stock or aftermarket square-bore carburetors with manual or electric chokes. BLACK DIAMOND® intake manifolds are designed to accept most stock hardware, such as coolant and vacuum lines, coils, HEI distributors, and brackets. Few alterations, if any, should be required.


P/N 701-1BD does not accept an EGR valve, hot-air, or divorced chokes. This part is not legal for sale or use for motor vehicles with pollution-controlled equipment.


The following installation instructions must be carefully read and understood before you begin installation. Below is a preliminary check list that should be completed before you begin installation. Improper application or installation of this product may result in unsatisfactory performance, fuel mileage, or emissions. Failure to follow these installation instructions could result in engine damage and may void your warranty. If you require any assistance regarding this product please contact Quick Fuel Technology® Technical Support at: 270-793-0900, Fax: 270-793-0951, or for online assistance refer to our website at www.quickfueltechnology.com.


Carefully read and understand these installation instructions.

Check that this intake manifold is the correct choice for your engine application, desired performance level, and local emissions laws. This intake manifold will require a manual or electric carburetor choke.

Inspect the manifold for any damage that may have occurred during shipping. If damaged, contact your dealer immediately.

Check that all of the parts listed in the Kit Contents list in these instructions have been included with your intake manifold.

Inspect all threaded holes.

Inspect all internal passages with a light and a stiff wire to be sure that the passages are not obstructed and have been properly cleaned to be free of any debris.

Check for sufficient hood clearance with this intake manifold and intended carburetor/air cleaner combination to be used.

Check that you have all of the parts required for the installation. These include the intake manifold gasket set, gasket adhesive, RTV silicone sealant, and pipe thread sealant as shown in the Parts Required list in these installation instructions.

Check that you have all the tools you will need to perform the intake manifold installation. A recommended but not exhaustive list is located in these installation instructions.

Check that you have the proper intake manifold fasteners for this application.

If using your old carburetor, before you remove it from the engine make sure it is working properly and that the carburetor is tuned properly. Consult the shop manual or installation instructions for that carburetor to determine if the carburetor is in proper tune.

If you are using a new carburetor, make sure you have read and understand the installation instructions for that carburetor and that the initial adjustments are within the manufacturer’s specifications.

Before removing your old intake manifold, make sure that your ignition system is in good working order; check and note the current ignition timing. Make sure that the timing marker is legible and understandable. With the engine at top dead center on the #1 cylinder, note and mark the orientation of the distributor body to the engine and the orientation of the rotor to the distributor body. This will aid in the re-installation of the distributor. Consult these installation instructions and your vehicles shop manual for specific instructions.

Before removing your old intake manifold check the adjustment of your automatic transmission kick-down linkage to make sure it is adjusted properly. Consult your shop manual and make sure that you understand the kick-down linkage adjustment and how to properly adjust it when you install your new intake manifold.

Before removing your old intake manifold check all of your fuel, water, and vacuum hoses and their connections. Make sure that there are no leaks and that the hoses are in good condition. Mark the locations of your hoses making sure that there is a corresponding location on your new intake manifold for all of the hose fittings and gauge sensors. Fitting and hoses that are not in good condition should be replaced.


1701-1BD Intake Manifold

2– 3/8 NPT Hex Pipe Plug

1– 1/2 NPT Hex Pipe Plug

43/8-16 X 1” header bolt

4– 3/8 Washers

1– Installation Instructions

1– Warranty Card


NOTE: It will be necessary to purchase some of the parts listed below (or their equivalents) in order to properly complete the manifold installation. Determination of equivalency is the responsibility of the consumer. QUICK FUEL TECHNOLOGY® does not assume that responsibility.

Intake manifold gasket set, Fel-Pro® P/N 1256 is recommended

Valve cover gasket set

Oil-resistant, silicone-based sealant (Permatex® silicone form-a-gasket, Dow Corning® Silastic®, or equivalent)

Spray gasket adhesive (Permatex® 80064 High Tack™ Spray-A-Gasket™ sealant or equivalent)

Carburetor-base gasket (usually supplied with carburetor)

Thread sealer,(Loctite 565, Permatex® P/N 56521)

NOTE: Never install tapered (pipe) fittings in an aluminum manifold dry without thread sealer or thread damage will occur.


Socket wrench set 3/8”-drive ratchet and extensions Box end/flare wrenches (optional)

Ignition wrench set Gasket scraper Drain bucket Torque wrench

3/8-16 NC thread chaser, or tap (for cleaning bolt holes)

Open end wrenches 3/8” to 1” 10” adjustable wrench (crescent)

Screwdrivers, standard and Phillips, various lengths Needle nose pliers

Timing light File

Vacuum Gauge


Engine coolant

Engine oil

Shop towels, paper and/or cloth

Masking tape

Pad and pencil

Modeling Clay


These instructions are designed to cover a wide variety of vehicle applications. If your vehicle is not equipped with any items referred to in these instructions, such as transmission kick-down linkage, air conditioning, or power brakes, proceed to the next step. Also, if you are unfamiliar with any of the procedures in these instructions consult a shop manual for your vehicle and engine application.


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