December 23rd, 2014.
Before the thread gets locked out, gents, do you figure that the man hauled an M1101 trailer behind it at 85? That should just about catch all the empty beer cans and hotdog wrappers, plus I am pretty certain he must have had "Foggy Mountain Breakdown" playing on the radio meanwhile...Oh, wait, its stock, so no radio.
Knowing how poorly GM engineered the 350 engine, I am not sure I would have attempted 85 dropping it off a cliff. I used to work in GM parts, and my 1976 GM 350 was a parts maven as it was always breaking down. I had better luck with a '51 Ford 239 V-8, but it couldn't do 50 in the F6 dump truck it was in.....
However, if he is getting 85,then he could run it in the Cannonball Coast to Coast Run, maybe Dr. Van Helsing and Captain Chaos are still looking for a ride? Dean Martin and Sammy Davis Jr. are out of the race, along with "Jimmy the Greek" Snyder, but there are a few others left from the movie you could run it against!
Lets hope he doesn't blow the engine in a Federally or state protected area, as the EPA fines for lubricant spillage can be considerable.
If it has a mechanical speedometer, there is probably a built in error or lack of calibration in it. The electric ones make errors too, as I have seen the wife's Jeep Wrangler consistently read 3 miles over actual, and no way to correct it until it gets to 5 over.....
I do have a Unimog that did 90 all day long, but that was in KPH! And it really does not like going faster then 60 or 70 KPH.
Well, it's getting near Christmas, and I am sure we all have enjoyed the Christmas Story on here, so let's hope Santa brings him a much nicer, faster GM diesel for his truck.
The world won't come to an end if he says he did 85 in the M series PU. But the M series Blazer may have had a small chance of doing it, but they weren't too overbuilt either.
In any case, I figure that this thread has gone on quite enough, but there has been some useful speed/rpm conversion tables on here up above.
Merry Christmas!