Originally Posted by FuzzFace2

What not everyone has a Dwell meter?
Yes I would get one if you plan to keep points.

On that note replace the points with a Pertronix unit and never need to lean over the fender to set points again.
Other also claim the motor starts easier and runs better too.

Does you truck have the tune up spec on a sticker on the firewall or radiator support?
If so you can use that to set dwell & plug gap and be ok.

Also note yon set point gap then use the meter to set dwell as it will be off a little and why a meter is best to use.
Then set timing as changing point gap / dwell changes timing. BTW if you go with pertronix you will never have to set dwell or timing.

On the plugs dont go with any of the new fancy plugs stick to the old copper ones that the motor & IGN system was made to run with.
Dave ----

Originally Posted by Weberda328jw

that 300 6 didn't come out till 1972-1973 spark plugs 44 champion but so hidden timing mark TDC run fine then set dis 6btdc ok fast but nkg. Plug s are better autolight seem faulty out every winter motorcraft work maybe duraspatk an x timminv anx carb depends on accuracy at gap story most set 37-55 seem be bit better