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Catalog #2121, 3721, 3723, 7121, 7521, 75213
Rev. 1/08 - AJ/mc
©2008 Edelbrock Corporation
Brochure #63-0350Page 2 of 3
Manifold 2121 (Non-Emissions):
Manifold 7121, 7521, 75213 (Non-Emissions):
• THROTTLE BRACKETS: Due to the design of Performer manifolds, the throttle and kickdown bracket on some vehicles may require
modification to fit. When using Edelbrock carburetors, use #1490 or 1845 throttle plate kit. See Figure 1.
• 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.
A-Carburetor will work with non-EGR or pre-emission control systems.
B-Carburetor will work with EGR system.
H-Carburetor has provision for evaporative canister.
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.
P-Carburetor is not a stock replacement part
CARBURETOR REFERENCE PARTS REQUIRED FOR INSTALLATION
Performer #1403 (500 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Performer #1404 (500 cfm) A, I, K, N, O #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Performer #1405 (600 cfm) A, I, K, N, O #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Performer #1406 (600 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Thunder Series #1805 (650 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Thunder Series #1806 (650 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Thunder Series #1825 (650 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Thunder Series #1826 (650 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
CARBURETOR REFERENCE PARTS REQUIRED FOR INSTALLATION
Performer #1407 (750 cfm) A, I, K, N, O #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Performer #1411 (750 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Performer #1412 (800 cfm) A, I, K, N, O #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Performer #1413 (800 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Thunder Series #1812 (800 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
Thunder Series #1813 (800 cfm) A, I, K, N #1490 or 1845 throttle plate kit, #1483 or 1844 throttle lever adapter
INTAKE MANIFOLD RECOMMENDED GASKET
2121, 3721, 3723, 7121, 7521, 75213 Edelbrock #7220 Port: 1.20” x 2.00”, .060” Thickness
NOTE: To ensure maximum performance and a proper seal, Edelbrock gaskets which are
specifically designed and manufactured for use with Edelbrock parts must be used.
• PREP AND TUNING FOR POWER:
NOTE: Local emission laws must be checked for legality of any carburetor or ignition changes.
Performer Series Intake Manifolds
1. The long equal length runners in the Performer manifold create a very strong signal to the carburetor. 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) Performer manifolds deliver excellent drivability and power utilizing stock distributor settings. 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 packages.
4) Installation of aftermarket headers or camshafts may lean the carburetor calibration. Should this occur recalibrate with a richer jet.