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350ci gm motor, mallory unilite distributor, flamethrower coil. question: should stock ceramic 75ohm ignition resistor be used with this combination?

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  • burt1554 Sep 28, 2009

    how do i get to this solution on this website?



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318 engine with no spark to coil or spark plugs. how do i fix this

William, your car uses a ballast resistor that causes what you describe. This is usually a ceramic white, rectangular piece, mounted on the firewall.
The voltage to the coil has to be dropped to 8 volts, or so. Chrysler handles that with a ballast resistor and it fails.
To test, you can wire across the resistor and see if you have spark.
My recollection is one side is for the coil and one side for the wipers or something like that.

This is a common problem.

Dec 27, 2014 | 1987 Dodge Ram 50

1 Answer

Have a 67 tang with Mallory coil and distributor

check firing order and ignition timing. Ensure that you have connected the distributor up correctly to the coil. Check to see if the unit requires tacho (rpm gauge) wires connected. Some of these units need the rpm's reading as the ignition pulse determines the advance of the spark

Sep 08, 2014 | Ford Mustang Cars & Trucks

1 Answer

I have a 350 chevy engine using a mallory unilite distributor what is the spark plug gap for champion platinum plugs number 3025 the engine is 1978

Without any more information than this I have to say it should be between 32 and 35 thousands. I don't have the info from the ignition system that your using, Have you checked the manufactures suggestions. Unless this is a super spark ignition then the gap I quoted should work.

Mar 20, 2011 | Chevrolet Classic Cars & Trucks

1 Answer

I have a 1992 toyota pickup ext cab, 4x4 V6 420 000 km. I have swapped the engine out for a 1994 toyota 4runner V6 220 000km, same identical engine. i replaced the timing, intake seals, oil pan seal,...

Try a hot wire to the distributor. If the engine keeps running then the problem may lie with the ignition circuit wiring. It also might be the ceramic resistor.

Mar 16, 2011 | Toyota Pickup Cars & Trucks

1 Answer

I have mallory unilite distributor and i dont know what to gap my spark plugs at

you can find that information in your local chiltons manual or you local parts store

Nov 12, 2009 | 1965 Ford Mustang

1 Answer


negative to the points, positive to the hot wire that goes to the firewall.

Aug 19, 2008 | 1966 Ford Mustang

2 Answers

No Spark from coil

i don't beleve 3 volt is enaf for the coil it has to be at least 9 volts
if this car has a resistor on the car or on the circuit going from ignition switch to ignition coil replace it, but if it does not have one then it has to have one built in the circuit wish is going to be very hard to find i will recomed you to get straight ignition power from ignition sw, to an aftermarket ignition resistor and from there to the positive side of ignition coil,
but also let me know what promaster means? is that the brand? or is that a performance coil?
and does your car has elecgtronic? or points system ignition distribuitor.

Jun 08, 2008 | Chevrolet Chevy Cars & Trucks

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