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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Oct 2011 Posts: 118 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 118 | took out 6 volt generator, want to install 12 volt alternator...for my 48 gmc, do i need to switch pulleys, alt. pulley slightly smaller, if so, is it much work? | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | a smaller diameter pulley is preferable on an alternator [faster spin], what might be a problem is width, if it's a much narrower groove an original belt will likely be too wide, and while you may be able to get a narrower belt to work, you don't want the narrow belt to be bottoming out in the other pulleys .... play it by ear  Bill | | |
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