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 your ride with power and style — don’t get left in the cold start line!

CUSTOMIZABLE STYLE - Choose between black or chrome finishes to perfectly match your engine bay aesthetic.
PLUG PLAY VERSATILITY - Compatible with Ignitor kits and any inductive ignition system for seamless upgrades.
ENGINEERED FOR RELIABILITY - Optimized to work flawlessly with Pertronix Ignitor Electronic Conversion Kits and Plug n’ Play Distributors.
TAILORED RESISTANCE OPTIONS - Available in 1.5 or 3.0 Ohm primary resistance for easy integration with diverse ignition setups.
ELECTRIFY YOUR ENGINE PERFORMANCE - Delivers a powerful 40,000 volts for a larger spark gap, boosting power and fuel efficiency.

The Pertronix 40611 Flame-Thrower Ignition Coil is a high-performance 12V ignition coil delivering 40,000 volts and available in 3 Ohm resistance. Designed for compatibility with Pertronix Ignitor kits and any distributor-type inductive ignition system, it enhances spark plug gap for improved power, smoother engine response, and better fuel economy. With sleek black or chrome finishes, it offers both performance and style, engineered in the USA for reliable, hassle-free installation.

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Brand	Pertronix
Vehicle Service Type	Car
Item Weight	0.88 Kilograms
Connector Gender	Male
Installation Type	Screw-In
Manufacturer	Pertronix
UPC	694342004903 685228713675 826732084213
OEM Part Number	40611
Global Trade Identification Number	00694342004903
Model	Flame-Thrower
Item model number	40611
Exterior	Machined
Manufacturer Part Number	40611
Volume	56 Cubic Inches
Colour	Black
Assembly Required	No
Country of Origin	USA
Item Weight	880 g

Pertronix 40611 Flame-Thrower Ignition Coil, 40,000 Volt 3 Ohm, 12 Volt, Black

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