GM Semis

[factorystock]

This is how you deal with trusses on the job site.

[C10 - C90 Bill]

Same kind of truck, same kind of trusses, but I would deliver them a little different, lol.

[KQQL IT]

Betcha a 4-71 in it.

[KQQL IT]

Couple more Jimmy's

[factorystock]

Always wondered the difference in HP between turbo and non turbo.

[Bob B.]

Originally Posted by factorystock

Always wondered the difference in HP between turbo and non turbo.

GMC offered the 6-71T early on in the 970 series around 1957 rated at 235 H.P., when most 6-71's were 180 H.P.. They must have dropped the engine option sometime before 1960 because I can't find any records of it after. I don't think the 6-71T returned to GMC's until the early 80's.

[regan wilson]

Originally Posted by Bob B.

GMC offered the 6-71T early on in the 970 series around 1957 rated at 235 H.P., when most 6-71's were 180 H.P.. They must have dropped the engine option sometime before 1960 because I can't find any records of it after. I don't think the 6-71T returned to GMC's until the early 80's.

I wonder if the reason was turbo failures. That was one reason it took so long for the turbocharged cars and trucks to come about. The old Turbo Trans Am is a good example.

[C10 - C90 Bill]

Originally Posted by regan wilson

I wonder if the reason was turbo failures.

That does sound familiar. I believe I read some details about that somewhere.

[factorystock]

Originally Posted by Bob B.

GMC offered the 6-71T early on in the 970 series around 1957 rated at 235 H.P., when most 6-71's were 180 H.P.. They must have dropped the engine option sometime before 1960 because I can't find any records of it after. I don't think the 6-71T returned to GMC's until the early 80's.

Maybe a "special order" engine in GMC's during the 70's.

[Bob B.]

Originally Posted by factorystock

Maybe a "special order" engine in GMC's during the 70's.

Possible it was some kind of SEO on GMC's. 6-71T's were built for other make trucks in the 70's though. Seem to remember seeing some International S series trucks with 6-71T's in the late 70's.

[KQQL IT]

FB grabs

[NewBayColony]

Another beauty from Pacarhauler! Looks like a 62 Biscayne behind the cab.

[C10 - C90 Bill]

A Gas Engine in a Long Nose? Wondering if that was really available. I've never heard of one. Possibly in the early days of '66 or '67? If so, I'm sure it was the 637 V-8 only.

[Bob B.]

Originally Posted by C10 - C90 Bill

A Gas Engine in a Long Nose? Wondering if that was really available. I've never heard of one. Possibly in the early days of '66 or '67? If so, I'm sure it was the 637 V-8 only.

Yes and yes! I have never seen one or even a picture of one though, but that model is listed in the Data Book and brouchers. There were a very few 637 gas powered Crackerbox cabovers made, a guy on the ATHS website had one years ago.

[C10 - C90 Bill]

Bob, Just as an update, how many 9500 Conventionals have you ever seen with a 637 V-8 Gas?

Also have you ever seen one yet with a 10-Speed Road Ranger behind it?

It's been just about 50 years now since the company I worked for took delivery on a JE with a 10-Speed and in all those years, I have never yet to even hear of another. I have also researched it pretty thoroughly through the years. Did we have the only one in the US, lol?

[Bob B.]

Just a couple and they were HE series fire engines. Seems that mose 637's came with large Spicer 5 speeds but the consensus seems to have been they needed more gears. A 10 speed or 5X4 would probably have ideal.

[C10 - C90 Bill]

Originally Posted by Bob B.

Just a couple and they were HE series fire engines. Seems that mose 637's came with large Spicer 5 speeds but the consensus seems to have been they needed more gears. A 10 speed or 5X4 would probably have ideal.

I have to say that it was a pretty good match. I have also seen (in pictures) a few with 5X3's and 5X4's. I'm surprised that the 10-Speed wasn't standard, like it pretty much was with a Detroit. But, especially with Firetrucks, they may have wanted a Trans that was Synchronized.

Which reminds me of the '68 Long Nose I saw a few years back. It had a 6-71 instead of an 8V-71 but to my surprise, it had a 5 and 2 (2-Speed Rear). I had never seen one in a Long Nose before but sure enough, it was a former Firetruck.

[KQQL IT]

Neato tanker

[KQQL IT]

The 62 4x4 shorty tho

[regan wilson]

Originally Posted by KQQL IT

The 62 4x4 shorty tho

There's a C-30 and a Corvair Pickup on there too.

[factorystock]

Originally Posted by regan wilson

There's a C-30 on there too.

A GMC factory flatbed it appears to me, however, hard to tell if its a 3/4 or 1 ton FB, unless the wheelbase or rear suspension is more visible.

[factorystock]

Originally Posted by KQQL IT

The 62 4x4 shorty tho

IMO,that would be the jackpot of that load!

[KQQL IT]

Originally Posted by factorystock

IMO,that would be the jackpot of that load!

That's what I was thinking. Probably lowest production numbers on the load.
Where that 4x4 factory in 62 or a conversion.
My pre 73 history is lacking.

[C10 - C90 Bill]

Originally Posted by KQQL IT

That's what I was thinking. Probably lowest production numbers on the load.
Where that 4x4 factory in 62 or a conversion.
My pre 73 history is lacking.

A friend of mine has an original '64 1/2 Ton 4 X 4 with a factory 3-Speed on the Column yet. It was the first one I ever saw.

Edit: Wrong info posted earlier deleted.

[streetrodchev]

Starting for the ‘60 model year, GM did the 4x4 in house on the 1/2 and 3/4 ton trucks.
Prior to ‘60 it was a NAPCO conversion.
It was also a NAPCO conversion on the 1 ton and heavier trucks from ‘60 until???
GMs first in house 1 ton 4x4 was 1977.