Will this work in my 1981 ford bronco with the straight 6 cylinder 300 cid 4.9 l engine?

I doubt this model number would give you the best performance. This is on a four cylinder tractor motor. Check the Flame Thrower site for the correct model number.

When installing this with the Pertronix ignitor, do you have to bypass the resistance wire? if you don't does it damage the coil?

I have the resistance wire hooked up with mine, if not you might burn out you coil and cause injury to your Pertronix ignitor. If you are building your own system I would put in a resistor or if you don't have a resistor I would add one.

Will this work for everyone ?

It should work for a 6volt system that is a 12volt vehicle that uses a ballast resister to drop the volts with out using the resister

Will this coil work with a 61 Ford Pickup 312 engine?

It will certainly work with the PerTronix ignition installed. If it has the same resistance as the OEM coil, no problem working with the stock system. Check out the .pdf on the PerTronix website for the resistance of the 40611 coil. You may need to remove the existing ballast resistor, or add one., depending upon the spec.

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⚡ Ignite Power, Command Performance!

SLEEK STEALTHY - Matte black finish blends seamlessly with your engine bay’s stock aesthetic.
ELECTRIFY YOUR RIDE - Delivers a blazing 40,000 volts for larger spark gaps and peak ignition performance.
PLUG PLAY SIMPLICITY - Internally resisted coil means hassle-free installation and wiring.
BUILT FOR EVERY TERRAIN - Choose oil-filled for street heat control or epoxy-filled for rugged off-road durability.
OPTIMIZED FUEL EFFICIENCY - Higher voltage sparks translate to smoother throttle response and better mileage.

The PerTronix 40611 Flame-Thrower coil delivers a powerful 40,000 volts with a 3.0 ohm resistance, designed for inductive ignition systems. Its internally resisted design simplifies installation, while oil or epoxy filling options ensure optimal heat management and vibration resistance. Finished in sleek black, it enhances both performance and engine bay aesthetics for street and off-road vehicles alike.

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Manufacturer	Pertronix
Brand	Pertronix
Model	PerTronix
Item model number	40611
Exterior	Machined
Manufacturer part number	40611
OEM Part Number	40611
Item Weight	880 g

Pertronix40611 Flame-Thrower 40,000 Volt 3.0 ohm Coil, Black

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