Differences between a Early 99 and Late 99 7.3
 

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

The E-99 has 130cc(AB code) injectors and the later 99-03 has 140cc(AD code) injectors.

The E-99 has 2" intake runners. The later 99-03 has 3" intake runners.

The E-99 has a 15* swash plate HPOP. The later 99-03 has a 17* swash plate HPOP.

The E-99 has one glow plug relay. The later 99-03 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 E-99 has a totally different air filter that is not inter changeable with the later 99-03. But you can put the late 99 air cleaner assembly in the E-99 truck.

The E-99 track rod has smaller mounting bolts than the later 99-03.

The E-99 has shallower rotors than the later 99-03.

The E-99 has shorter hub-bearings than the later 99-03.

The E-99 front axle U bolts are square where they go over the spring pack. The later 99 U bolts are round.

The E-99 has a different pitman arm than the later 99-03.

The E-99 does not have the AIH like the later 99-03.

The E-99 does not have the automatic transmission fluid cooler in the radiator.

The E-99 has no indicator light showing that "cruise" is on. Later 99-03 has a cruise light that will come on when you set the cruise control. Some of the E-99 trucks have this 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.

Not tryin to be a wiseguy or nothing, but K&N an a few others make intakes too. I'm running K&N on my E-99.

so where is the tranny cooler at on the e99?

Fixed...

There is a seperate cooler on the front of the truck.

question? they say E-99's dont have an intake heater. i hnow for a fact mine does but it looks just like the early airbox heater.

the intake heater in in the spyder

I had a E99 and it had a cat the late 99 did not have one.

There is NO intake air heater on a early 99. If you have a intake air heater in the Y pipe in the valley, you do not have a early 99.

their is one in mine but it looks just like the airbox heater its not the " coiled glow plug" its smaller.:humm:

Your probably seeing the IAT2 intake air sensor #2 in the spider. It has a green plug on it.

Its the IAT sensor...

You have a E99...

Wow lots of great info :tu:
What is a "wicked wheel"

WW is a E-99 compressor wheel. It has stepped blades and moves the surge line on the turbo a bit... Customer complaints on the E-99 trucks made Ford change the design, and also add the insulation on the L-99 and on.

With a E-99 you already have one!

so the WW is diserable? Sweet! Does it just make a better sound, and what is the surge line.

From what I've read the WW flows less air to try and reduce surge. Since you CANNOT get a ported compressor housing for the E99, it (has a 4 bolt compressor housing), later models have a 5 bolt housing. As for the surge line, I have no idea.

Early 99 has two wheel ABS (that's what mine is) and late 99 has all wheel ABS.

Posted with my Verizon Wireless iPhone

my e 99 has round u bolts on the front.

Doesn't the E99 have the V8 Powerstroke decal up front and the 99.5+ on the door?

Re: Differences between a Early 99 and Late 99 7.3
 

Most of the time yes but there are a few earlys that got the door badge

Mine is a 2000 and it is on the 1/4 panel, nothing on the door.

mine has it on the door.

Not really a good indicator, some do, some dont, some have been changed.

When I had my e99 truck that was the first thing I changed.

Can you use any of the good turbos,injectors, programmers ect .It sounds like the motors are pretty much the same just the bolt on acc are different ? I noticed on some of the upgraded stuff it says not early 99 .
Thanks

most of it you can. about the only thing i've found that will not work on the e99 is turbo stuff. like there is no ported compressor housing for the stock e99 turbo.

The E99 turbo uses a different pedistal and all that so You would have to swap everything over to the Later stuff...

Injectors can be used throughout all 94-03 powerstrokes with the right programming to run them.. Most programmers/chips are PCM specific but can all be tuned to work on whatever vehicle you are running...

that's what i meant with the turbo stuff. but thanks for expading on that.

i put the wicked wheel on my 01 when i got my truck a few months ago. doesnt sound different from what i can tell, but it doesn't surge like the old one. if yours doesn't surge, i wouldnt worry with it. to be honest with you, i believe my fuel milage dropped slightly witt the new wheel. idk if thats possible, but as some of you know, i truck for a living and check my fuel milage EVERYDAY. on that not, my new chip got me my best empty mpg ever!!! 12.84.....thats 17,000lbs empty boyz and gurls.....!!!..

why didn't you just get a ported compressor housing?

How much better is a 17 degree than a 15? whats the difference between the injectors? Whats the difference in the codes? for the injectors?
am i able to use the up pipes off a 99 in my 97?
also is the turbo any different? intercooled?

No you can't just use the uppipes off a SD on your OBS...
AA/AO have 90cc of fuel
AB's used in E99 have 120cc of fuel
AD's use in 99-03 have 140cc of fuel
17* is better than a 15*

if you can't use the uppipes from a e99 on a OBS then why do they sell the bellowed uppipes and list them for 94- early 99 then 99.5- 03?