alternator and wiring

[Joeaus08]

I want to replace my alternator to a 100 amp unit, I understand there is some wiring and/or battery cables that will need to be changed.

Any pointers? Also, what is the stock amperage on a '73 "Q" code Mach 1.

thanks,

Joe

 

[giantpune]

Are you talking about doing a 3G conversion? They sell a mostly bolt-in kit for that. If you have the stock amp meter, it probably won't be happy about it.

 

[Joeaus08]

OKAY - THANKS

 

[Hemikiller]

Depending upon the options, you could have up to a 70A alternator. The typical Ford rear terminal alternator topped out at 65-ish amps. The side terminal could be had up to 90A in other car lines.

Powermaster has some direct fit options that are 75A in a small case 1G and more in other styles.

https://powermastermotorsports.com/catalog.html#

 

[Joeaus08]

Thanks for the info!

 

[Bobby]

Any mod you'll need to do is increase the size of your charging wire from your alternator to your starter relay and then to your battery. #4 AWG copper wire will generally suffice. You can go to #2 copper if you feel generous but #4 in that short distance will do.

 

[Joeaus08]

Any mod you'll need to do is increase the size of your charging wire from your alternator to your starter relay and then to your battery. #4 AWG copper wire will generally suffice. You can go to #2 copper if you feel generous but #4 in that short distance will do.

thank you!

 

[4thesporty]

Painless sells a good wiring kit for a 3g conversion at a reasonable cost. I used it and a Duralast alternator for a 94 mustang on my 71.

 

[Joeaus08]

I appreciate you!