you'd hafta find some trucks of each year w/ the emblems to see if it changed at all - I doubt you'll find production breakdowns like engine type - for those years all I've ever seen for GMC is total truck production for the year including all series [sizes/weights], tho it's a safe bet that prolly less than a quarter had V8's especially the 1/2 and 3/4Ts

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics