I have a 3g alternator to install in my 66 (351w). My old alternator and belts are going, and its needed for an eventual stereo swap. That said, i've never even done an alternator swap on my own so need some clear directions 
Thanks.
Thanks.
3g alternator install... walk through?
- Thread starter SadbutTrue
- Start date
-
Sponsors (?)
horseballz
10 Year Member
I too would be interested in some clear, detailed instructions, including the options for eliminating the original voltage regulator without needing to make a new under hood wiring harness.
TIA,
Gene
TIA,
Gene
Loup-garou
Founding Member
what parts do I need other than the alternator itself?
any details on the 'voltage regulator delete' that was mentioned above?
I noticed some mentinos of a 175amp mega fuse... where do I get that? do I need it?
any details on the 'voltage regulator delete' that was mentioned above?
I noticed some mentinos of a 175amp mega fuse... where do I get that? do I need it?
Loup-garou
Founding Member
Check out pa-performance.com; 3G Upgrade Kit (Retains Stock Wiring) part #462802C. They also sell the mega-fuses shown in the above diagram, as well as other bits and pieces.
NMEMJCM
Member
Yep, check out the link above. They will set you up with everything you need. It is very easy with their pigtailes and instructions. Call them, they had me rollin in a few hours of work after I bought their kit. sooo easy.
sdmustangrider
New Member
Did you ever get this solved? Sorry it's been a while. I'm usually on AFM or Vintage. I got the single wire 150 amp alternator and it's done SUPER. I had 2 amps, one for sub and amp for interior speakers and it's been great to me. Email me if you haven't done this and I can tell you what to get. [email protected]
just got the fuse and box for it from PA performance, so that hsouldn't be an issue.
however, what did you guys do about the pulley? i had been planning on taking the old pully off the original-style alternator, but it doesn't fit the 3g. can i use the 3g's pulley (if so, will i need a different belt)? do I need an adapter of some kind?
however, what did you guys do about the pulley? i had been planning on taking the old pully off the original-style alternator, but it doesn't fit the 3g. can i use the 3g's pulley (if so, will i need a different belt)? do I need an adapter of some kind?
sdmustangrider
New Member
I've never heard of the pulley not fitting. My pulley was able to fit to my 3g alternator with no issues. I ended up having to change the belt to a 1 inch longer belt to reach the pulley.
What my dad said in the email this morning (he had taken it home to edit some battery wires and to take the pulley off with his impact wrench):
" Did Steve tell you that I took the pulleys off and they are not interchangeable – the shaft on the older versions is longer and very slightly different diameter."
sdmustangrider
New Member
I don't know what to tell you. Mine was able to swap. Maybe someone else had an experience like you did.
Loup-garou
Founding Member
Well, the shaft on the 1G alternator is longer - the external fan has to fit there. I've never compared the shaft diameters of the two styles, but I'd venture a guess that the 3G is a metric size.
Are you staying with v-belts? If so, look at the March 4" 1V pulley for the 3G alternator - the larger diameter helps prevent belt slipping/squeal. Or you can use a two-sheave pulley and twin v-belts.
BTW, PA-Performance sells pulleys too. Call them and ask about your application.
well, got her in. we were able to get the shaft to work with some massaging. PA performance's mega fuse and regulator eliminator kits helped too.
thanks!
thanks!
skywalker
Member
Similar threads
