Early 99 or late 99 - Ford Powerstroke Diesel Forum
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Old 09-15-2011, 12:44 PM
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Early 99 or late 99

Hi there, I have a 99 f350 dually mark 3. I cant figure out what year it is because the sticker on the door only says december 98. But the emblems are on the door not the fender. Im looking to start modding it. Please help!
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Old 09-15-2011, 12:51 PM
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any thing built before 12/7/98 is a early 99

Early 99 has a wicked wheel in it from the factory.

The early99 has 120cc(AB code) injectors and the late99-03 has 140cc(AD code) injectors.

The early99 has 2" intake runners. The late99-03 has 3" intake runners.

The early99 has a 15* swash plate HPOP. The late99-03 has a 17* swash plate HPOP.

The early 99 has a 110v IDM..the 99.5-03 have a 120v IDM

The early99 has one glow plug relay. The late99-03 has one glow plug relay and one air intake heater relay side by side. Both relays are on the passenger side valve cover toward the front of the truck.

The early99 has a totally different air filter that is not inter changeable with the late99-03. But you can put the late99 air cleaner assembly in the early99 truck. The only three aftermarket air filters that work on the early99 are the AFE stage 2, the AIS and the KWIKK 6637.

The early99 track rod has smaller mounting bolts than the late99-03.

The early99 has shallower rotors than the late99-03.

The early99 has shorter hub-bearings than the late99-03.

The early99 front axle U bolts are square where they go over the spring pack. The late99 U bolts are round.

The early99 has a different pitman arm than the late99-03.

The early99 does not have the AIH like the late99-03.

The early99 does not have the automatic transmission fluid cooler in the radiator.

The early99 has no indicator light showing that "cruise" is on. Late99-03 has a cruise light that will come on when you set the cruise control. The early99 truck has the light in the dash already. A newer PCM(Yes it will plug in and will run better too) must be used to make the cruise light illuminate. It is a green light on the right side edge, half way up.

--

So, do you have a 'cruise' light on the dash? Are your ubolts rounded or square? Are there 2 relay's side by side on the pass side valve cover? What's your air box look like?
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Old 09-15-2011, 12:56 PM
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Out of all those ^^ The Air Intake Heater (AIH) in the passenger side just passed the spider, will tell about the motor, and the square u bolts on the spring pack tell about the front end, are the easier ways I figured out mine. Some guys between like December 98 and March of 99, have a mix like an early motor and a later front end.
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Old 09-15-2011, 01:18 PM
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and
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Old 09-15-2011, 01:40 PM
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Quote:
Originally Posted by Austin G View Post
any thing built before 12/7/98 is a early 99

Early 99 has a wicked wheel in it from the factory.

The early99 has 120cc(AB code) injectors and the late99-03 has 140cc(AD code) injectors.

The early99 has 2" intake runners. The late99-03 has 3" intake runners.

The early99 has a 15* swash plate HPOP. The late99-03 has a 17* swash plate HPOP.

The early 99 has a 110v IDM..the 99.5-03 have a 120v IDM

The early99 has one glow plug relay. The late99-03 has one glow plug relay and one air intake heater relay side by side. Both relays are on the passenger side valve cover toward the front of the truck.

The early99 has a totally different air filter that is not inter changeable with the late99-03. But you can put the late99 air cleaner assembly in the early99 truck. The only three aftermarket air filters that work on the early99 are the AFE stage 2, the AIS and the KWIKK 6637.

The early99 track rod has smaller mounting bolts than the late99-03.

The early99 has shallower rotors than the late99-03.

The early99 has shorter hub-bearings than the late99-03.

The early99 front axle U bolts are square where they go over the spring pack. The late99 U bolts are round.

The early99 has a different pitman arm than the late99-03.

The early99 does not have the AIH like the late99-03.

The early99 does not have the automatic transmission fluid cooler in the radiator.

The early99 has no indicator light showing that "cruise" is on. Late99-03 has a cruise light that will come on when you set the cruise control. The early99 truck has the light in the dash already. A newer PCM(Yes it will plug in and will run better too) must be used to make the cruise light illuminate. It is a green light on the right side edge, half way up.

--

So, do you have a 'cruise' light on the dash? Are your ubolts rounded or square? Are there 2 relay's side by side on the pass side valve cover? What's your air box look like?
Wow... What is all that info produced by a special key on your keyboard??Great info
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  #6  
Old 09-15-2011, 06:48 PM
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If you look at the top of the 7.3L general discussion there is a section dedicated to Early Bird

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