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Now that is some custom coach work! Very impressed with the quality craftsmanship back then.

A lot of work went into that one. Reminds me have any of you ever seen a sleeper cab on a Steel Tilt? From what I can find out, they were not exactly 'factory', though they are shown in a few sales brochures. There were at least 2 companies converting them and they could be ordered from the dealer (truck was delivered to the body company after manufacture). Most were steel construction and looked very 'factory' but some were a fiberglass cap like the sleeper on a Ford C series.

Found a picture of the steel one:

https://www.imcdb.org/v445096.html

Thanks for sharing :gmc:. No mention of the cab build

Quote:

Originally Posted by Bob B. (Post 9068095)

We could have a pretty good discussion about what was wrong (and right!) with the Toro-Flow.

The improved version was the Toro-Flow 11. This article shows what was done for durability over previous versions. Maybe too little, too late?

Some nice early GMCs

Quote:

Originally Posted by factorystock (Post 9091220)

The improved version was the Toro-Flow 11. This article shows what was done for durability over previous versions. Maybe too little, too late?

Possibly, but the new head gaskets and revised max R.P.M. governor setting addressed 2 issues the engine had. The Toroflow certainly had it's share of problems but so did most of the competitive mid-range diesels of that time, like the small Cummins V-6 and V-8's, the Ford Dagenham and Dorset, and the Internationals. In fact about the only reliable mid-range diesels back the 60's were the Detroit 53 series engines. A lot of the problems were caused by operator error. Engine overspeeding, poor quality fuel, improper maintenance, and overloading. Overloading was also caused in part by dealers, who would spec. trucks with a Toroflow to win fleet bids. Toroflow diesels were inexpensive compared to a lot of heavy duty diesels but equaled many larger diesels in H.P. and torque. Around the time the Toroflow II came out the engine was also dropped from the higher GVW trucks. Eventually the 220 H.P. DH 637 V-8 Toroflow was discontinued as well.

Quote:

Originally Posted by Bob B. (Post 9092152)

In fact about the only reliable mid-range diesels back the 60's were the Detroit 53 series engines.

Good 'ol Detroit.

1942 GMC AY
Attachment 2199488

1931 GMC T-110
Attachment 2199489

1920 GMC K-71. 3 1/2 ton
Attachment 2199490

1932
Attachment 2199550

1959 GMC 860
6-71, 5 speed o/d
Attachment 2199551

I'd like to check out that Iowa-80 museum some day

Quote:

Originally Posted by special-K (Post 9092694)

I'd like to check out that Iowa-80 museum some day

It is worth the stop.

Beautiful Chevy truck.

Rare to see a '45 in civilian use.

Quote:

Originally Posted by special-K (Post 9092694)

I'd like to check out that Iowa-80 museum some day

Same here.

2 short Chevy dump truck videos of my favorite mid 60's 10 wheelers, the M 80's. First video is a '65 , second is a '64. https://www.gettyimages.com/detail/v...?adppopup=true
https://www.gettyimages.com/detail/v...?adppopup=true