671 Detroit

No power but sounded like a race car.

 

If this is all you have they will get the job done if your not in a hurry. Cant expect too much they are 426 cu in displacement and made 238 hp.

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Learned to drive on one of these. 2 speed rear, single axle. Certainly no powerhouse. We primarily used it for a lot jockey and transporting trailers that needed service about an hour away. It liked them empty for sure and you could tell when they wernt.

 

I used drive one in the city. Same 7 spd. Fun to drive, high revving it, the sound turned a lot of heads, only to see an old junky Truck, Lol. No torque at all when loaded. Had to really drive it hard, to make it go. Smooth spring ride, and easy manual steering. Made for a good local Truck. Much easier to Drive than the Fords. They were very hard to turn, and spring suspension would beat you to death. I liked the fuel tank w/ built in step. I’d walk/step straight out of it. Got in a Ford once, and out of habit tried to step straight out, bounced on my ### hit the ground. Lol. Good simple engine though, lasts forever. Mine leaked 2 gallons of oil per day from rear main. Blew turbo, hit the shoulder and shot flames 15’ from the stack. Left a big black ring on the underneath overpass Lol. Drive it another 10 miles to the yard, after waiting for a couple hrs. A fresh inframe at 3 mil Miles. Good as new.

 

What turbo? 238 didn't have a turbo, it was a gear driven blower.

 

Drove a 66 kw wrecker with one, not too bad empty. Would go home in it, kill it , go in the house go to bed and could still hear the darn thing running. That was in the 55 mph days.

 

My first truck I owned was a 1970 GMC. Got a deal on, I figured if being an O/O doesn’t work out, I wasn’t out of pocket much. Insurance was cheap back then, $1200 premium for a year. .70 cents a gallon for fuel. Anyways, it had the famous 671 with a 10 speed 3 axle. It did the job pulling cans out of the port and piggy’s out of the rail. Screaming Jimmy’s is what they where called.