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1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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Old Jun 26, 2008 | 12:25 AM
  #1  
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From: Wainwright Ab, Can
help please!!

hey guys i am having a tough time figuring out what year my truck is. vin says its a 1977. just wondering how would i know if its a 77 or a 77.5 it is a f250, has 3'' rear leafs but the frame is 34'' under the cab then flares out to 37'' or whatever it is,i am just really confused.any help would be greatly appreciated.
 
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Old Jun 26, 2008 | 01:27 AM
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Are we talking about a 4x4?
Wide frame in the rear, 3" rear springs, married transfer case, Bolt on front spring hangers, all would indicate a 77.5 truck.
 
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Old Jun 26, 2008 | 01:30 AM
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Welcome to the site. From your description, it sounds like a 77.5.

75F350 gave some better descriptive info for ya to make sure.
 
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Old Jun 26, 2008 | 01:44 AM
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From: Wainwright Ab, Can
thanks guys,hey got another one for ya. my vin # on my door starts with x15 for truck series.cant find anywhere that will break it down.i would love to find out what that x15 means.
 
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Old Jun 26, 2008 | 01:50 AM
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Originally Posted by lukeg
thanks guys,hey got another one for ya. my vin # on my door starts with x15 for truck series.cant find anywhere that will break it down.i would love to find out what that x15 means.
Welcome to FTE

X15 = F150 2WD Super Cab

The Warranty Plate is located on the left door face below the latch.

Ppl swapped left doors due to accidents, and forgot to swap over the Warranty Plate = the major reason why the VIN on the Warranty Plate doesn't match the VIN on the registration.

1977/79 Warranty Plates have the specific year stamped on them. The year appears on the second line of the plate.

btw: The last "High Boy" was produced in 1977 before serial number Y20,001 = what some refer to as 1977.5.

The serial number is the last 6 digits of the VIN.

 
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Old Jun 26, 2008 | 03:57 AM
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I always thot that meant that the truck was made in the mid-year season.
 
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Old Jun 26, 2008 | 12:37 PM
  #7  
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well im thinkin its a 77.5.the headlights are still round and it doesn't have the divorced transfer case. i guess my best bet is to find the frame vin. and go from there.thanks for your help guys this is really a great site.
 
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Old Jun 26, 2008 | 03:05 PM
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Originally Posted by lukeg
well im thinkin its a 77.5.the headlights are still round and it doesn't have the divorced transfer case. i guess my best bet is to find the frame vin. and go from there.thanks for your help guys this is really a great site.
As original.

ALL 1973/77 F100/350's have round headlights.

ALL 1978 Customs have round headlamps, the Rangers have rectangular headlamps.

ALL 1979 F100/350's have rectangular headlamps.

The last "High Boy" was assembled before serial number Y20,001.

1977 F100/350's have two serial number ranges > >

From O00,001 thru O99,999 / From X80,001 thru Z25,000.
 
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Old Jun 26, 2008 | 08:44 PM
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NumberDummy is always right when it comes to this stuff........believe me!
 
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Old Jun 27, 2008 | 03:28 AM
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Numberdummy's a great guy.
 
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Old Jun 28, 2008 | 11:06 AM
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Lukeg, Does yours have power steering? That is the easist way for me to tell if the frame is highboy or 77.5-79. The 77.5-79 has a power steering gear box not the power sleeve, and the box is on the inside (in the engine compartment not on the outside) of the frame. That is the first thing I look at if it has power steering and a dead give away.
 
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Old Jun 28, 2008 | 01:58 PM
  #12  
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From: Wainwright Ab, Can
yes it does have power steering,thanks for the feedback everybody.now i know what leafs to order for my lift.
 
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Old Jun 28, 2008 | 06:12 PM
  #13  
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I'm pretty sure that pre 77.5 had power assist and 77.5-present has power steering. then of course if you just don't have power anything like me!
 
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