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Yes, much better at 12*. You don't need to move the dist. Move the high tension leads in the cap.

Oops! missed post #41.

Get fr wheels off the ground so that steering wheel can be turned easily. Disconnect battery & turn wheel to see if noise is still present. If it is, it is a mechanical issue, not electrical.

Sinitro, I know how ign systems work & probably knew decades before you did. I was switching ign coils on/off with SCRs in the 1960s.... See if you can spot the errors in the link you provided....

Yeah, blah, blah, blah. The statement in post #25 'coil voltage is not crucial' is still wrong.

Post #25 is incorrect. Voltage to the coil IS critical. All coils are designed to work with a certain supply voltage. Supplying the coil with less than that voltage might result in no spark produced.

If just #1 is not getting spark, it could be the cap or lead. It could also be the reluctor gap [ likely it has no gap, is touching the pole piece & you get no spark on THAT cyl ]. It could be the gap is too big, but that is less likely if just one cyl is affected.

You do not want dielectric grease on the horn roller. DG is an insulator & the horn may not work.

Could be ign sw.

Thanks for updating. It also helps others.

This is a new dist. Check the p/up air gap. If it has moved, & got larger, you will get no spark.

Use a GM HEI 4 pin module, mounted on a heat sink to the dist body. Less wiring, less connections to fail. Switch to an E core coil, which allows removal/bypassing of the bal res. And a spark with more energy, 0.060" plug gaps..... Info & pics on the web.

The coil you are using determines whether or not a bal res is reqd with it. The Pert unit is just a 'switch' in this case that switches the coil current on/off. Bypassing/removing the bal res will burn out the coil if it is designed to be used with a bal res.....

No, you can retain the coil for use with HEI but you have to use the bal res with it if that coil is designed to use a bal res. You will not get the best out of the HEI unless you use an E core coil with 0.4-0.6 ohms pri resistance.

The best place for Pertronix products.....is on the shelf at Pertronix. If you want a better ign system than the Chrys ECU, use the GM 4 pin HEI module. See post #26 & others.

Well that wouldn't help.....

Lithium batteries should only be sold if a fire extinguisher is included in the sale....

Getting the + & - wires reversed on the coil does not damage the ECU or coil; it gives reduced secondary voltage.

Packard made plug leads for different manufacturers; these had a carbon track that carried the spark current. Very high resistance 10-30,0000 ohms. The carbon was also liable to break & cause hard to find misfires. I saw on another forum that Packard now make wires with a heli wound conductor...

R/T boy has covered it well. The mixture is less dense as cam overlap increases. More distance between the molecules; flame front takes more time to spread; hence more timing [ advance ] needed to get the most productive burn. With really big cams, up to 50* at idle may be needed...