The Biggest Gas Engine America Ever Put in a Truck

Comments · 102

• KE

  @kevinvoyer5053 · 1 month ago

  As a retired 71 year old truck driver who was there in the mid 70’s, born into a trucking company owning family.  That was forced out of business by 1981, because of two big factors. One was OPEC I, II & III, with the noted triple price increases for gas and fuel. My family had a gas powered fleet in the late 60’s early 70’s till the end in 81, with 12 slightly different GMC 6 wheelers, with a 305, 8, 351’s and two 401 V6 gas engines. Then after that I worked part time as a union casual for Roadway, who was still operating large fleets of Ford C950’s in single cab gas powered with the huge noted V8’s running 5 speed low hole transmission and 2speed rears. Pulling 48 & 53’ dry trailers. With local P&D runs with up to 45,000 loads. Running through the gears till the 3,200 rpm red line, hitting the hill at 65, then clearing the crest at 30 mph in 3 gear low with the engines screaming to maintain speed. All while getting from 1/2 -4 mpg!

  10

• JO

  @johnkirby6216 · 2 weeks ago

  GMC 702 v12 went 500,000 miles without a rebuild I’ve heard reports as high as 1,000,000 miles without a rebuild.

  3

• DA

  @davidwestover7158 · 1 month ago

  In the 70's a 549 International V8, held 25 quarts of oil att each oil change.

  5

• PR

  @prismchng · 1 month ago

  You need to do better research, Hallscott built the largest gasoline engine ever put in a truck, 1091 cubic inches.

  34

• DO

  @dongunderson9572 · 1 month ago

  You forgot about the 1100 cubic inch Hall Scott in the M 26 Pacific tractor ,use in WWII as a tank retriever and after the war used to move large building and heavy loads.

  41

• DA

  @DarrylDutton-y3b · 1 month ago

  LA County and LA City fire departments used 935 and 1091 cubic inch Hall Scott in line 6 cylinder engines. The 935 used an updraft carburetor. The high horsepower 1091 had dual down draft 4 barrel carburetors and if I remember correctly it was rated at 365 HP, &nbsp;I don’t remember the torque. Both the 935 and the 1091 were overhead camshafts with hemispherical combustion chambers, they had huge pop up dome pistons.They ran 2 distributors and 2 spark plugs per cylinder with 2 ignition switches. I remember how smooth they were, especially at idle. In a 28,000 pound Crown Coach fire engine they flat out hauled ASS! I did get to see a V-12 Hall Scott once while it was running with straight open exhaust, it was incredibly LOUD! It was OD green (military) and I believe it was used as a stationary power plant.<br>I worked on both of these engines at LA City and LA County fire departments. In the end both departments were having pistons and rings made by Jahns. They were buying the timing chains in bulk rolls. When unleaded gas came out even unleaded premium just ate up spark plugs. They had to start shaving the tops of the pistons to lower the compression.<br>Good times

  16

• LI

  @lilibethdoherty295 · 1 month ago

  I drove a 1987 GMC 24 FT box truck with a 757 CID V8 For Many years it had as much power as my 440 powered 1976 Winnebao Brave !

  4

• JN

  @jnbfrancisco · 1 month ago

  I sold gasoline in 1969-70 for about 28 cent for regular and 30 cents for Ethel in central Indiana. &nbsp;I never lost a sale.

  11

• WI

  @willhansen5321 · 1 day ago

  AFC-Brill bus model IC-41 ran Hall Scott pancake 6 under floor behind the front axle. These coaches were reportedly the fastest on the two lane blacktop in the 50s.

• NO

  @normanott7142 · 4 days ago

  Those engines were used to pump water in SW Kansas for irrigation.

• ER

  @ern48 · 1 day ago

  I drove an &apos;69 International Fleetstar for 4 years that had a 478 v8 the smaller displacement of the 549 block. &nbsp;It was a small engine but still sucked up the gas at 2.5 mpg!

• SH

  @shanecox203 · 3 weeks ago

  A cool engine that isn’t the biggest in overall displacement is John Deere’s 501 parallel twin

  1