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Will 3G alternator fit in stock position of 68 galaxie with FE 390?

954 Views 14 Replies 8 Participants Last post by  808Mark, 
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Has anyone put a 3G alternator on a 390 in the high mount position? I'm really tired of my fitment issues i'm having with my GM10SI case. The bump on the back hits the head of the motor. I'm not interested in going to the low mount style as i'd like to use the original brackets as much as possible. I measured from my bracket to the block and its extremely close to if not slightly more than 4.5 inches. The dimensions off of summit say from the mounting surface to the back is 4.5 inches.

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jmbneaf
I've done this conversion, works very well. Especially if you are using electric fans or similar.
Higher AMP alternator needed for that. Also, if one goes bad, can easily replace at most parts stores.
I found these links to be very helpful:

www.motortrend.com

How-to Install a High-Output Ford 3G Alternator into Older Fords

A Ford 3G integrally regulated alternator is the best choice for replacing old 1G externally regulated alternators on amped-up muscle cars.
www.motortrend.com www.motortrend.com
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jmbneaf
No belt whine on my setup. The tensioning is vitually the same as a 1G alternator, especially if you re-clock the alternator to move the connectors for easier access.
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