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PARTS INTENDED FOR COMPETITION USE ONLY.
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PARTS INTENDED FOR COMPETITION USE ONLY.
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INTAKE MANIFOLDS, GASKETS AND COMPONENTS

The wide range of Chevrolet Performance intake manifolds are cast-iron and aluminum for carbureted and fuel injected applications. These intake manifolds were designed specifically for GM engines so you know they will deliver optimum performance. Due to the profile of some Chevrolet Performance high-rise intake manifolds, hood clearance should be carefully checked before ordering an intake manifold.

14097092

Intake Manifold – Oval-Port, iron, spread bore

  • Economical iron 4-bbl intake manifold
  • Fits all 396–502 engines with large oval-port heads

NOTE: Open carburetor spacer is not recommended with use of dual-plane manifolds.


19131359

High-Rise Intake Manifold – Rectangular-Port, square bore, Holley Carburetors

  • Aluminum, dual-plane manifold can be used with high-performance cast-iron or aluminum rectangular port heads
  • Same as used on 454 HO and 502 HO engine assemblies

NOTE: Ports do not match Bowtie cylinder heads P/N 14044861 and P/N 12363425. 

NOTE: Open carburetor spacer is not recommended with use of dual-plane manifolds.


12363420

High-Rise Intake Manifold – Oval-Port 

  • Designed for all 396-502 engines with GM aluminum heads (1975 and earlier) and large oval-port iron heads
  • Has a dual-plane design with spread bore flange and a dual-bolt pattern
  • Has no provisions for a hot-air choke, but will accept a divorced choke or electric choke
  • Accepts air conditioning and alternator brackets
  • Use intake manifold gasket P/N 12366985 and bolt kit P/N 12367959

NOTE: May not fit on many Corvette models. Manifold height is 6" at the rear and 4.5" in front. Check for hood clearance before ordering.

NOTE: Open carburetor spacer is not recommended with use of dual-plane manifolds.


12363421

High-Rise CNC-Port-Matched Intake Manifold – Oval-Port, spread bore

  • Similar manifold design as P/N 12363420 (see above), but it is “CNC” port-matched to Chevrolet Performance oval-port aluminum cylinder heads

NOTE: Open carburetor spacer is not recommended with use of dual-plane manifolds.


12363406

Intake Manifold – Oval-Port, square bore, Holley Carburetors

  • Same as manifold P/N 12363420 (see above), but designed for use with a Holley carburetor
  • Dual-plane design requires bolt kit P/N 12367959, which includes 16 bolts (8740 chrome-moly 3/8"-16 x 1.5" with 3/8" hex head and 16 5/8" O.D. washers), and manifold gasket kit P/N 12366985
  • Accepts air conditioning and alternator brackets and a late-model water neck

NOTE: Will not fit production Corvettes, and may not fit Chevelles. Manifold carb flange height is 4.450." 

NOTE: Open carburetor spacer is not recommended with use of dual-plane manifolds.


12363407

CNC-Port-Matched Intake Manifold – Oval-Port, square bore, Holley Carburetors

  • Same as P/N 12363406 (see previous page), except it has been CNC-port-matched for GM aluminum oval-port heads with large oval-port heads (1975-and-older), and all aluminum heads with oval-ports

NOTE: Open carburetor spacer is not recommended with use of dual-plane manifolds.


88961161

Intake Manifold – ZZ572/620 Engine, square bore, Holley Carburetors

  • Aluminum single-plane intake manifold is used on the ZZ572/620 engine
  • The carburetor flange is for a 4150-style carburetor
  • Use intake gasket P/N 88962213
  • For tall-deck blocks

88962218

Intake Manifold – ZZ572/720R Engine 

  • Aluminum single-plane intake manifold is used on the ZZ572/720R engine
  • The carburetor flange is for a 4500 Dominator-style carburetor
  • Use intake gasket P/N 88962213
  • For tall-deck blocks

INTAKE MANIFOLDS: Additional Required Components

Part Number

Gasket (Qty)

Bolts (Qty)

Engine Application


12464484

12366985 (1)

12497460 (1)

12499121


12464482

12366985 (1)

12367959 (1)

12499121


88961161

88962213 (1)

12367959 (1)

19201333, 19331583


12363420

12366985 (1)

12367959 (1)

12498777, 19331574, BB oval-port high-rise


12363407

12366985 (1)

12367959 (1)

19201332, 12371171, 19331579, CNC version of 12363406


19131359

12506106 (2)

10198997 (14)

12568774, BB dual-plane


88962218

88962213 (1)

12367959 (1)

19201334, 19331585


Ram Jet Fuel Injection Kit, with MEFI-4 Electronics

  • Retro-fit fuel injection kit is calibrated for a 502/502 Chevrolet Performance engine and is the same as used on the Ram Jet 502 P/N 12499121
  • May be used on other Big-Block applications by replacing the ECU unit with an aftermarket unit with the proper calibration
  • Includes brackets, sensors, bolts, nuts, gaskets and other small parts, including:

INTAKE MANIFOLDS: Additional Required Components

Part Number:

Description and Quantity:


88962744

Instruction Manual (1)


12489400

Diagnostic Trouble Code Tool (1)


12555320

Intake Manifold Oil Shield (1)


12366985

Gasket Package (1)


12367959

Bolt/Screw Package (1)


12489372

Upper Intake Manifold Gasket (1)


12487372

Fuel Feed Hose (1)


10216948

Tube Assembly–Fuel Press Regulator (1)


88961968

Engine Harness Assembly (1)


10456208

Knock Sensor (1)


12489595

Bracket Assembly, Transmission Cable (1)


12489596

Bracket Assembly, Transmission, Throttle Cable (1)


12489597

Rod, Throttle Control (1)


1104060

Distributor (2)


1115491

Ignition Coil (1)


12464482

Lower Intake Manifold (1)


12464484

Upper Intake Manifold (1)


17113524

Body Assembly Throttle (1)


12490257

Air Filter Kit (1)


12569240

MAP Sensor (1)


25036751

Intake Air Temperature Sensor (1)


17113222

Fuel Injector Retainer Kit (1)


17120039

Rail Assembly, Multi-Port Fuel Injection (1)


19245527

Fuel Pressure Regulator Assembly (1)


88962718

Module Assembly Engine Cont. (1)


15326386

Coolant Temperature Sensor (1)


19178918

O2 Sensor (1)


12487373

Connector, Fuel Rtn. Line (1)


ELECTRONIC CONTROL UNITS & COMPONENTS

88962718

ECU, Ram Jet 502

  • Replacement ECU for all Ram Jet 502 engines (MEFI 3 P/N 12497323 or MEFI 4 P/N 12499121)
  • MEFI 4 Ram Jet engine is a closed-loop system that gives a much smoother idle and improved performance

NOTE: Replacing the ECU on MEFI 3 Ram Jet engine P/N 12497323 requires using new wire harness kit P/N 12499117, or jumper wire P/N 88963118 to use MEFI 4 ECU as an open-loop system.


12499117 

MEFI 4 ECU & Wire Harness Kit, Ram Jet 502

  • Module/harness kit is used to convert a Ram Jet 502 from MEFI 3 to the newer MEFI 4 design, which offers improved idle and performance through a closed-loop system
  • Includes module P/N 88962718, wire harness P/N 88961968, oxygen sensor P/N  19178918, intake air temp sensor P/N 25036751 and oxygen sensor fitting P/N 15156588

NOTE: The ECU is programmed with a “green mode” that controls the rpm for the break-in period. During this period, engine speed is limited to 4,000 rpm in the first hour, 4,500 rpm in the second hour and 5,500 rpm in the third hour.


88963118

Jumper Harness, MEFI 3 to MEFI 4

  • Allows an MEFI 4 module to be used with an MEFI 3 wiring system (to stay as an open-loop system)
  • Fits both Big-Block and Small-Block engines

88961968

MEFI 4 ECU Harness, Ram Jet 502

  • Used in the MEFI 4 Ram Jet 502 P/N 12499121 with the MEFI 4 closed-loop oxygen sensor-equipped system
  • Use with MEFI 4 ECU P/N 88962718

12464482

Lower Manifold, 502 Ram Jet

  • Aluminum lower portion of the intake manifold is used on Ram Jet 502 crate engine P/N 12499121
  • Use with upper manifold P/N 12464484 (see below), upper manifold gasket P/N 12489372 and bolt package P/N 12497460

12464484

Upper Manifold, 502 Ram Jet 

  • Aluminum upper portion of the intake manifold is used on Ram Jet 502 crate engine P/N 12499121
  • Use with lower manifold P/N 12464482 (see above), upper manifold gasket P/N 12489372 and bolt package P/N 12497460

MANIFOLD GASKETS AND COMPONENTS

12555320

Oil Shield 

  • Isolates hot engine oil from the air/fuel mixture

12366985

Gasket, Aluminum Oval-Port Heads

  • Designed for Big-Block aluminum heads P/N 12363390, P/N 12363392, P/N 12363399, P/N 19331425, P/N 19331424 and P/N 19331422
  • Use with manifold P/N 12363406, P/N 12363407, P/N 12363420 or P/N 12363421

88962213

Intake Manifold Gasket 

  • Use on all Big-Block engines with rectangular intake port heads 396- through 572-cubic-inch
  • Includes 2 gaskets

12506106

Gasket, 454 and 502 Engines

  • Used on 454 and 502 engines; with restricted heat crossover passages
  • 1 gasket per package; order 2 per engine.

12367959

Bolt Kit, Intake Manifold

  • For any Big-Block Chevrolet engine
  • Includes 16 bolts: 3/8"-16 x 1.5" with wide, underhead flange with a 7/16" hex head
  • Rated at 170,000 psi and will give consistent torque load
  • Includes 16 hardened flat washers

NOTE: Four of these washers are smaller in diameter for use around the front water passages.


CHROME WATER NECKS

12342024

Water Neck

  • Chrome water neck with neoprene 0-ring and chrome bolts
  • For 1966-1975 full-size Chevrolet, Camaro, and Chevelle V-8 engines

12342024

Water Neck

  • Chrome water neck with neoprene 0-ring and chrome bolts
  • For 1966-1975 full-size Chevrolet, Camaro, and Chevelle V-8 engines

10108470

Aluminum Water Outlet 

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.