Finding my ratio

[rpcraft]

See this is one of those trucks that came from around 79 but his axle stamp says its a 12 bolt (which is fine) but I was thinking G80's were not available in the 12 bolt either but there is a g80 code on his build tag...

 

[Honky Kong jr]

See this is one of those trucks that came from around 79 but his axle stamp says its a 12 bolt (which is fine) but I was thinking G80's were not available in the 12 bolt either but there is a g80 code on his build tag...

G80 is widely used and is non-descriptive and generic for “posi”