Speedometer
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1970 Hi-Boy
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Speedometer
Does anyone in the wide, wide world of Ford Trucks, know why the speedometer in my 1970 F250 Hi-Boy, has a red line from 70 to 100 mph? So in other words what am I risking if I exceed 70 mph? I can't even find anything about it in the owners manual. Surely Ford must have had a reason for doing this it would stand to reason, I just do not know what that reason is. Looking for the real deal answer, anybody?
1970 F250 Sport Custom 4x4 360 V8, otherwise known as the Hi Boy, and a Harley-Davidson.
1953 Lincoln SA200 portable welder with a 4 cylinder 1941 Continental F162 engine.
"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford
1953 Lincoln SA200 portable welder with a 4 cylinder 1941 Continental F162 engine.
"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford
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Whateverman
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Re: Speedometer
The real deal answer? Dunno.
Some reasonable guesses: as a warning -that you are driving at a speed faster than the drum brakes can safely stop
-that the engine is revving pretty high at these speeds
-that these old trucks get pretty floaty at higher speeds
Some reasonable guesses: as a warning -that you are driving at a speed faster than the drum brakes can safely stop
-that the engine is revving pretty high at these speeds
-that these old trucks get pretty floaty at higher speeds
- still got my first first car 20+yrs later : 69 f100 sorta kinda pretending its a Mercury M100 w/a 70 f350 sport custom cab (factory buckets) 67 grille with 69 ranger cooneyes 68 merc box and hood,some supercool fiberglass fenders i scored way back when, 76 f150 disc brake frontend..currently running a 90 5.0HO 4bbl/c4 auto & 3.50 posi...originally a 360/c6 f100 Ranger with dealer added towpack (incl. kelsey hays trailer brake),boxside toolbox,behind the seat stowage & belly tank...only original parts left on 'er are the frame,rear end,rear springs,and rear bumper...
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basketcase0302
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Re: Speedometer
You might not be old enough to remember...1970 Hi-Boy on Mon Mar 19, 2012 10:07 pm
Does anyone in the wide, wide world of Ford Trucks, know why the speedometer in my 1970 F250 Hi-Boy, has a red line from 70 to 100 mph? So in other words what am I risking if I exceed 70 mph? I can't even find anything about it in the owners manual. Surely Ford must have had a reason for doing this it would stand to reason, I just do not know what that reason is. Looking for the real deal answer, anybody?
Your truck was made just prior to when the NTSB here in the USA dropped the speed limit nationwide to 55 MPH. So even then over 70 was illegal in ever state.
An educated guess-not "the real deal" by no means...
Jeff
http://www.fordification.com/forum/view ... 22&t=46251
SOLD-71 F-350 dually flatbed, 302 / .030 over V-8 with a "baby"C-6, B & M truckshifter, Dana70/4.11 ratio, intermittent wipers, tilt steering, full LED lighting on the flat bed, and no stereo yet (this way I can hear the rattles to diagnose)! SOLD!
Many Ford bumps / one 76' EB / and several dents through the years.
A lot of "oddball" Ford parts collected from working on them for 34 years now!
2008 Ford Escape 4 x 4
http://www.fordification.com/forum/view ... 22&t=46251
SOLD-71 F-350 dually flatbed, 302 / .030 over V-8 with a "baby"C-6, B & M truckshifter, Dana70/4.11 ratio, intermittent wipers, tilt steering, full LED lighting on the flat bed, and no stereo yet (this way I can hear the rattles to diagnose)! SOLD!
Many Ford bumps / one 76' EB / and several dents through the years.
A lot of "oddball" Ford parts collected from working on them for 34 years now!
2008 Ford Escape 4 x 4
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1970 Hi-Boy
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Re: Speedometer
Too young for sure, I was born 2 years prior to the truck being built at the San Jose plant, would it being built in California have anything to do with it possibly?basketcase0302 wrote:You might not be old enough to remember...1970 Hi-Boy on Mon Mar 19, 2012 10:07 pm
Does anyone in the wide, wide world of Ford Trucks, know why the speedometer in my 1970 F250 Hi-Boy, has a red line from 70 to 100 mph? So in other words what am I risking if I exceed 70 mph? I can't even find anything about it in the owners manual. Surely Ford must have had a reason for doing this it would stand to reason, I just do not know what that reason is. Looking for the real deal answer, anybody?
Your truck was made just prior to when the NTSB here in the USA dropped the speed limit nationwide to 55 MPH. So even then over 70 was illegal in ever state.
An educated guess-not "the real deal" by no means...
1970 F250 Sport Custom 4x4 360 V8, otherwise known as the Hi Boy, and a Harley-Davidson.
1953 Lincoln SA200 portable welder with a 4 cylinder 1941 Continental F162 engine.
"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford
1953 Lincoln SA200 portable welder with a 4 cylinder 1941 Continental F162 engine.
"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford
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71PA_Highboy
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Re: Speedometer
It is just what Basketcase says... the point at which you exceeded the maximum speed limit.
The older cars have the same thing... and some of them even had dots on the speedo hat told people when to shift too....
The older cars have the same thing... and some of them even had dots on the speedo hat told people when to shift too....
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1 Lincoln Mark VIII
2 EarlyBroncos (68,69)
2 Classic Mustangs (69,70)
1 F250 4x4 (71) - OB - 360, NP435, D24, HPD60 4.10, D60,
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1970 Hi-Boy
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Re: Speedometer
I thank you guys for replying. That does make a lot of sense after you mentioned it, I hadn't considered that before. So now I know, I risk a ticket when I'm on the Interstate. Better than all the other horrible possibility's I've conjured up over the years. Thanks again.
1970 F250 Sport Custom 4x4 360 V8, otherwise known as the Hi Boy, and a Harley-Davidson.
1953 Lincoln SA200 portable welder with a 4 cylinder 1941 Continental F162 engine.
"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford
1953 Lincoln SA200 portable welder with a 4 cylinder 1941 Continental F162 engine.
"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford