read an ad for a truck for sale with an 8.2L detroit turbo diesel. has a 10spd trans w/ 2spd rear end. was wondering if there is really a turbo on this engine, stock? the ad also called the truck a road warrior, king, ranger, or something to that affect, will have to look at the ad again. i would have to assume that this truck is bigger than a 1 ton, say like a C60 from the 70s. thinking of a cummins swap, etc. but need answers to these questions.

The 8.2 was available naturally aspirated and turbocharged. It was introduced around 1980 and was found in medium duty trucks of all kinds. It was Detroit's first venture into the four stroke arena, and much like its 6.2/6.5 cousins has a less than stellar reputation. When they first came out, they had 14mm head bolts that wouldn't hold, leading to head gasket issues. Sometime in the early 80's they replaced to 14mm bolts with 15mm TTY bolts to alleviate the head gasket issue. I wouldn't mind one in a light truck (3/4-1 ton) but with the extremely limited replacement part availability, I probably wouldn't consider it.

So, in '85 would this truck have the 15 mm TTY head bolts? Also in the ad it said Road Ranger and I believe they were talking about the 2spd rearend. Anyway, thanks for the info

That 5 speed/2speed combination was referred to as a 10 speed Road Ranger.

That 5 speed/2speed combination was referred to as a 10 speed Road Ranger.
A 5sp with a 2sp rear is not a Roadranger. A roadranger is a synchomesh transmission made by Fuller and it comes in many different configurations.

i truly believe a well built 6.5 would outperform a gnarly old 8.2. they are not worth the time and effort for the end result. there is a reason they had to put a 10spd trans and a 2spd rear end behind it. lol their power to weight ratio is horrid.

A 5sp with a 2sp rear is not a Roadranger. A roadranger is a synchomesh transmission made by Fuller and it comes in many different configurations.

Close. A Roadranger transmission is a non-synchronized transmission with a synchronized range shift. Typically it's a five speed box with a two speed rear range shift.

There are variations that range from 8 to 18 speeds.

There were some medium duty trucks that were spec'ed with 2 speed axles in addition to the 10 speed transmission. The idea was to use the axle low range off road, high range on highway.

All that aside, the 8.2 is an obsolete motor. If the truck is free, you may break even.