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| | | | Joined: Oct 2011 Posts: 172 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 172 | maybe this should be under electrical,,but,
when did gmc change over from 6v to 12v on big bolts ,
live or die do it with spanner in hand
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
What size/series "big bolt" and what size/cylinders engine?
GMCs with 6 cylinder engines stayed 6v (positive ground) through 1956 (standard equipment). 400-500 series trucks had an optional 12v system in 1956. All trucks with V-8 engines in 1956 had a standard 12v electrical system.
All GMCs had standard 12v negative ground from 1956 onwards.
| | | | | Joined: Oct 2011 Posts: 172 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 172 | What size/series "big bolt" and what size/cylinders engine?
GMCs with 6 cylinder engines stayed 6v (positive ground) through 1956 (standard equipment). 400-500 series trucks had an optional 12v system in 1956. All trucks with V-8 engines in 1956 had a standard 12v electrical system.
All GMCs had standard 12v negative ground from 1956 onwards. this is the truck in question, http://i468.photobucket.com/albums/rr41/spanners1964/1145751fad27e71c63unit_zpsc927e750.jpghttp://i468.photobucket.com/albums/rr41/spanners1964/1145751fad27d6fd66unit_zps2c4cff8d.jpg i,m awaiting delivery around 6 to 8 weeks and i,m trying to do as much research as possible but i have very little information to go on untill the boat comes in we were told its a 1948 but we now believe it to be a 1951 , 450 or 470 .
live or die do it with spanner in hand
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