Edelbrock 2838 - Manual (Page 3)

©2007 Edelbrock Corporation
Brochure #63-2838 Page 3
Catalog #2838, 2839
Rev. 9/07 - AJ/mc
CARBURETOR RECOMMENDATIONS: Manifold will accept any standard square bore flange carburetor, including all Edelbrock Thunder AVS and
Performer models. Due to engine efficiency and runner design, we recommend the use of a 600 cfm or larger carburetor. Dyno testing was
conducted with our 750 cfm high performance carburetor (part #1407). The best results were achieved with the stock primary jet, .075” x .047”
metering rods (part #1459), and .100” secondary jets (part #1428). We recommend using the stock calibration to establish a baseline, and tuning
accordingly from there. A smaller carburetor, such as the Thunder AVS 650 cfm (part #1806), would be preferable for street use particularly if the
stock camshaft will be reused.
CAMSHAFT AND HEADERS: Edelbrock does not currently make a camshaft for this engine. Although the stock cam can be used, we recommend
a more aggressive grind that will take full advantage of the improved runner design and flow capacity. Headers are not strictly necessary, but their
use is strongly recommend. Primary tube diameter should be no less than 1-5/8” with a 3” collector.
THROTTLE AND ACCESSORY BRACKETS: Throttle and kickdown brackets on some vehicles may require modification to fit. A universal throttle
cable bracket is also available under the Russell brand name (part #611069).
DISTRIBUTOR: The Ford 4.6L Modular engine uses a direct fire Coil-On-Plug ignition distributorless ignition system. A standalone ignition control
module is available seperately (#91237) and is included with the #2839 version of this manifold. Please refer to the seperate instruction sheet for
specific installation and tuning recommendations.