Thanks for the info! Yeah, that 3.90:1 is exactly what the book says for what the truck has.

The 235 is a very good motor. It's the only thing that isn't/wasn't stock to the truck. The numbers say it came out of a car. Whenever my great-uncle used to drive the truck he would say, "Are you sure there ain't a V8 under there?"

Even now - 20 years later - that same 235 runs GREAT. Except for a darn small crack in the block!!

Again, thanks for all of the information.