292 6-cylinder in a 4x4 Crew Cab?

[mountainexplorer]

I'm looking to get an '81 era 1-ton 4x4 Crew Cab. It has what looks to be a factory 6-cylinder in it (4.8 liter 292ci). It also has a TH400/205, and no tag on the 60 front indicating gear ratios. The story is that it used to be a truck owned and used on the Alaskan Pipeline.

What was the last year GM made a 292?

And would a 292 in a Crew Cab this size be any different than any other 292?

I'd also assume with a 6-cylinder that the truck would have come with 4.56 gears. Would you bet on 4.56s or 4.10s?

 

[73k5blazer]

According to some sales lit I saw, 1985 in the US, and 1986 in mexico were the last year for the 292 I6.

 

[Hossbaby50]

I would put my money on 4.56's. I believe most if not all factory 3/4 and 1 ton trucks came with 4.56 gears.

Harley

 

[sweetk30]

I would put my money on 4.56's. I believe most if not all factory 3/4 and 1 ton trucks came with 4.10 gears .

Harley

fixed it for ya. as most come this size

 

[tarussell]

Most base trucks came with standard gearing with a 292 and it was 4.56's.
GM say's it last put a 292 in trucks as late as 1990 but I believe that was in the "P" series trucks . The 292 was offerd in Mexico at the end of its production run but i do not know what was the last year....
The 292 in that truck should be no different than most others. It should be a cast crank with twelve counter weights as opposed to the earlier six counter weights cranks that were used. It should have a multi-groove harmonic balancer that is more sought after in the in-line crowd.
Those motors are tuff as nails but no speed demons in stock form.
Tom

 

[Hossbaby50]

I ment with 6 cylinders. I forgot that part in the statement.

Harley

 

[afroman006]

I had a 1 ton 2wd crewcab that had a 292 in it. It was a 1980 and had 4.10s.

 

[u2slow]

Dremu's brochures show 292 availability as late as '88 in the R/V series. P-series may have held on slightly longer, but I'm sure the intro of the 4L80E in '91 would have put it out of its misery. (a 292 with an auto is sacrilege )

The late ones were "Hecho en Mexico" as already mentioned.... these included a 2.5" outlet exhaust manifold. Good luck finding one.