Description
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Alternator Pulley So you’ve converted your Flathead-powered rod over to 12 volts and bolted a GM alternator in place. Now it’s time to install the belt, but your engine pulley is 5/8″ and the alternator is 1/2″! Don’t worry, Speedway has you covered. This alternator pulley allows the use of a 5/8″ wide Flathead-style belt on GM externally regulated, SI and one-wire alternators. Alternator Bracket Just because you’ve got a vintage FlatheadCompatible with Ford Compatible with V8 in your ride doesn’t mean you’re stuck with the antiquated charging system. Switching to a tried-and-true GM 1-wire alternator is a great upgrade for any Flathead-equipped vehicle with a 12-volt electrical system. Bracket 1946-1953 FlatheadCompatible with Ford and Mercury V-8 engines with WIDE belt drive systems. Heavy-duty steel construction. Can easily be painted to match your engine. Designed to work with the two narrow-belt drive system typical of late ’50-’53Compatible with Ford/Mercury passenger cars. Will not work with single wide belts unless the alternator is modified (see Notes) 3/8″ I.D. hole for mounting the alternator. Tapped 7/16″-20 to mount to the engine.
Vehicle information
Available fitment details
Listing compatibility notes
- Versatile Use: Compatible with all Powermaster alternators, generators, most GM alternators, and designed for both narrow two-belt and wide single-belt configurations with minimal modifications.
- Alternator Bracket Just because you've got a vintage FlatheadCompatible with Ford Compatible with V8 in your ride doesn't mean you're stuck with the antiquated charging system.
- Bracket 1946-1953 FlatheadCompatible with Ford and Mercury V-8 engines with WIDE belt drive systems.
- Designed to work with the two narrow-belt drive system typical of late '50-'53Compatible with Ford/Mercury passenger cars.
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Repair scenario
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Installation notes
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Companion parts
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