larger trucks were likely to have governors - if you have one it should be obvious, an odd looking thing pancaked between the carb base and the manifold ... regardless if you have one or not, keeping the revs below 3000 would be advisable

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