Looking to buy another truck. wasn't really wanting an early 99 but I found an early 99 with 200k and motor was rebuilt buy capitol city diesel in Jeff City MO last summer. clean interior and no rust.

So what are the main differences with the early '99. Thanks

 

Turbocharger pedestal
Turbocharger compressor housing and backplate
Up pipes
No intake air heater on early
Possibly different front hub assemblies and brakes
AB injectors in early, AD in late
15 degree HPOP in early, 17 degree in late
Air filter box on early is GARBAGE

I'm sure there a few I missed. I was never unhappy with my early '99 engine. Make sure you look at the compressor wheel before buying a truck. That's true regardless of the year, though. My early engine would still be in the truck if compression hadn't tanked in one cylinder.

 

smaller turbo, single shot injectors, smaller IC pipes, smaller hpop 15*, and im sure there is more that i can remember.

 

The AB's are still split shot injectors, they just flow a tad less than the AD's.

Stewart

 

10-4 i was thinking of the 97 engine.

 

I copied this from another post:

Thanks to Chris (tappit01)

Some differences between Early 99 and 99.5

Credit to Chase aka superduty4x4, Ron aka Ron's Power Stroke and in Bold credit to Jet aka
SolidGround

Early 99 has a wicked wheel in it from the factory. And much smaller turbo (spools faster, though)
The early99 has 120cc(AB code) injectors and the late99-03 has 140cc(AD code) injectors.
The early99 has 2" intake plenums. The late99-03 has 3" intake plenums.
The early99 has a 15* swash plate HPOP. The late99-03 has a 17* swash plate HPOP.
The early99 has one glow plug relay. The late99-03 has one glow plug relay and one air intake heater
relay side by side (along with early '99 CA models) . Both relays are on the passenger side of the ful
bowl toward the front of the truck.
The early99 has a totally different air intake that is not inter changeable with the late99-03 (except for
DRW trucks) . But you can put the late99 air cleaner assembly in the early99 truck. The only three
afterarket 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. (except for DRW trucks)
The early99 has shallower rotors than the late99-03. (except DRW trucks)
The early99 has shorter hub-bearings than the late99-03. (except DRW trucks)
The early99 front axle U bolts are square where they go over the spring pack. The late99 U bolts are
round. (except DRW trucks)
The early99 has a different pitman arm than the late99-03. (except DRW trucks)
The early99 does not have the AIH like the late99-03. (except CA model)
The early99 does not have the automatic transmission fluid cooler in the radiator.
The early99 has different size swaybar.
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 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.

 

The "engine cover"

 

What is the difference between the Pitman arms? I have an early 99 I'm trying to unlift.

 

Don't let the early 99 scare you. Have 260,000 miles on mine and love it. Great truck.

 

Nothing wrong with the E99, I have done the conversion to late model, under the hood at least. I can't really tell a difference, but it is better set up for larger injectors now.

 

Spline count is the only difference

 

If anyone has a Pitman arm for an early '99 I need one.
Mark

 

My opinion!! Look for at least a late 99 and keep forged rods and get the minor upgrades.

 

Look into the ambulance drop pitman arm for the E99.

 

It looks like drop pitman arms are easier to come by than the original. Will they work OK on a swap for standard?