DH478 Toroflow-powered 1972 GMC Napco 4x4 K5500

[kscarbel2]

 

[Geoff Weeks]

Those engine earned the moniker of "Toilet bowl" for a reason.

[mowerman]

wow man what a cool story,,,,,dynamite job on the rims and tires,,,,,,have a ball with it,,,hell id be happy just to have that pickup you pulled it with,,,,i had a 70 6ft fleetside back in the day when everyone had them i really liked it bob

[RoadwayR]

Saw that truck on another webside.  Rare to say the least.  Can't imagine spec'ing a Toroflow in a piece of fire apparatus!

Has anyone ever seen one of the big 637 V-8 Toroflow's?  I never have, though I have seen the gasoline 637 V-8 before.

 

[Geoff Weeks]

GMC (or Chevy) with a Deutz from the factory, that is what I call rare. I seen pictures of one in a manual, never seen one in pictures or otherwise in the wild.  They were offered as a factory option.

[RoadwayR]

[67RModel]

What year(s) were they offered? That brochure looks like sometime in the 1980s

[Geoff Weeks]

That is later than the manual I saw one in, IIRC it was later 60's before the body re-design. Showed the cab heater using engine oil as a heating fluid.

When did the Toro-flow go away? Likely the Deutz was offered when that happened.

Edited 2 hours ago by Geoff Weeks

[67RModel]

Well the last year you could get a 478ci gasoline V6 was 1974. But I think they were quite rare by then as everyone was opting for the 366 and 427 V8s

[Mark T]

IDK  those 60 degree big V 6s were popular. Even in the early '70s. At that time I had no idea what they were, but they had a distinctive sound and most of those old cab overs you'd see it hanging out if you looked under the cab from behind.

[67RModel]

I would love to find a 478 v6 to tinker with. At truck with one or just the engine itself.  They are hard to come by and I'm never it the right place when they pop up.