283's were Chev only engines - GMC used the Pontiac V8, NOT "whatever was coming off the line", but a Pontiac V8 for the year - different for different models, 288, 316, 336, 347 I believe

152-8 = 3/4T w/ 316 V8 123.25" W.B.
X=56

might check over at the old gmc trucks forum for more info on value

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