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The "009" has a shorter advance curve. If I'm not mistaken, the advance comes in full at around 2200RPM's. It's more of a type 1 distributor, because they can rev faster and higher, (until Jake finishes his type 1 exhaust port style type 4 heads.
The "050" has a broader curve, and comes in full about 1,000 RPM's higher. It's much more suited for the type 4 engine, especially with an aftermarket cam.
Edit - The "009" and "050" have different caps and rotors, and the "050" is a little larger.
The "205" is vacuum advance, and is unbeatable with factory injection or aftermarket injection for that matter. Unless of course you step up to the money and get a Mallory.
The Mallory "4554101" is the carb model. It's the best, but pricey. I'm not sure what the part number for the vacuum advance Mallory is, as I'm a redneck, and like carbs.
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2023 Ford F-150 Platinum 5.0 Coyote FX4
2019 Toyota Sienna XLE AWD
Metal Building Erector, Recovering Porsche Guy
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