Points and Sparks Plug Gap

[GregHowe]

I have a 66 with a 390 4B. Does anyone know the points and spark plug gap? Any help would be appreciated.

[Joe Van Datta]

Points - 0.017 --- plugs 0.032 to 0.036
dwell 26 to 31 degrees
Joe

[GregHowe]

Thanks for the info Joe.

[500sec]

how do you check the dwell?I did not see a window on the cap.

[Joe Van Datta]

Originally Posted by 500sec

how do you check the dwell?I did not see a window on the cap.

To do this you need a meter. I have a Sunpro multimeter that cks dwell, volts, amps and ohms. If you do a lot of engine tuning this is a handy tool
Joe

[Joe Van Datta]

If you install the Pertronix kit (about $75) dwell is no longer a factor as you eliminate the condensor and points. Once you set the gap when you install the kit you are home free.
The insructions come with the kit.
Joe

[GregHowe]

Do you have a part number for a 66 390?

[Joe Van Datta]

Grg, most speed shops have the igniter but if you have a problem getting one the Bird Nest in Portland, Or. has them in stock.
www.tbirdparts.com
1-800-232-6378

[Joe Van Datta]

Greg, if you talk to the Bird Nest people, ask them about a good rebuilt Ford 4 barrel. I have had one on my 66 since it was new and they are easy to work on and do a good job.
Joe

[neill]

Originally Posted by Joe Van Datta

If you install the Pertronix kit (about $75) dwell is no longer a factor as you eliminate the condensor and points. Once you set the gap when you install the kit you are home free.
The insructions come with the kit.
Joe

i have installed a pertronix ignitor , purchased from Retro rockets which i think is located in conneticut made a lot of difference especially cold starting which is quite a problem over in england round about december-february time, well worth the £50 ($75)