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©2006 Edelbrock Corporation
Brochure No. 63-0003
Catalog #70060, #70061, #70063
Rev. 6/06 - RS/mc Page 1 of 2
Edelbrock engineering has conducted dyno testing with the Performer RPM system to provide jetting maps for the three separate plates at different
jetting levels. These jet combinations are supplied with this system kit to enable you to vary your engine’s power output. On a typical mildly modified
350 cubic-inch engine, you can expect the following approximate power gains for each of the jetting levels:
Square-Flange Jet Map
Nitrous/Fuel Jetting Approx. HP Gains Final Air/Fuel Ratio Timing Adj. Footnotes
55/61 100hp 11.0:1 32 Deg. Total. 1, 3
71/75 150hp 11.0:1 30 Deg. Total. 1, 3
78/82 175hp 11.0:1 30 Deg. Total. 1, 3
85/89 200hp 11.0:1 28 Deg. Total. 2, 4, 5
99/102 250hp 11.0:1 26 Deg. Total. 2, 4, 5
Spread-Bore Jet Map
Nitrous/Fuel Jetting Approx. HP Gains Final Air/Fuel Ratio Timing Adj. Footnotes
59/62 100hp 10.8:1 32 Deg. Total. 1, 3
71/75 150hp 10.5:1 30 Deg. Total. 1, 3
81/86 175hp 10.2:1 30 Deg. Total. 2, 3
Dominator
-Flange Jet Map
Nitrous/Fuel Jetting Approx. HP Gains Final Air/Fuel Ratio Timing Adj. Footnotes
57/63 100hp 11.0:1 32 Deg. Total. 1, 3
71/75 150hp 11.0:1 30 Deg. Total. 1, 3
85/89 200hp 11.0:1 28 Deg. Total. 2, 4, 5
104/108 250hp 11.0:1 26 Deg. Total. 2, 4, 5
The dyno tests were conducted at Edelbrock using a mildly modified 350 cubic-inch engine. Both dual-plane and open-plenum intake manifolds were
tested to ensure validity of jetting maps for each horsepower setting. Modifications included Edelbrock intake manifolds, Edelbrock aluminum heads,
dyno headers, and improved ignition. We also used different grades of fuel and colder plugs during the testing. All stated timing adjustments listed in
jet maps is where the motor being tested worked best. Final timing should be adjusted to achieve best power and/or MPH per application. These tests
were conducted at 950 psi nitrous and 6.5 psi to 7 psi fuel.
These jetting patterns are designed to be rich and will provide the above-listed power settings under normal operational usage of this system. Any
variation in jetting patterns other than what is listed above and engine damage could occur. Please contact the Edelbrock Technical Department with
any questions you have concerning jetting patterns and their effects on engine performance.
Jet Map Footnotes
The jet map above has footnotes that offer the following instructions and technical information:
1. Spark Plugs use Champion RC-12-YC or equivalent.
2. Spark Plugs use Champion C-61C or equivalent.
3. Fuel use 92 octane pump gasoline or better.
4. Fuel use 110 octane race gasoline or better.
5. Single Plane manifold only. DO NOT use a dual plane manifold at this horsepower level.
NOTE: The last two horsepower settings (200 and 250) are for single plane manifolds only. In testing, we found that dual-plane manifolds have some
distribution problems at these super high flowrates that could cause engine damage. Please contact the Edelbrock Technical Department with any
questions you have concerning jetting patterns and their effects on engine performance when using a dual-plane manifold.
PERFORMER RPM NITROUS PLATE KITS
Catalog #70060, #70061, #70063
JET MAP INFORMATION