Early 99 vs. Late
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Tuned
Joined: Feb 2010
Posts: 402
Likes: 2
From: Colorado Springs
Early 99 vs. Late
I have searched a little on this topic and have found the following list.
But I am curious what each of these items really translates to.
Is there a significant power difference with a bigger turbo nad hpop? Like are the e99 450 ft/lbs and late made it to 500?
Do the different shape bolts in the front suspension make it handle better?
Early 99 actually has less breaking power? or just shallower rotors?
what difference do longer hub bearings make?
What does it all mean?
Thanks!
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 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 <NOBR style="FONT-FAMILY: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; COLOR: darkgreen; FONT-SIZE: 100%; FONT-WEIGHT: normal" id=itxt_nobr_57_0>control
</NOBR>. 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.
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 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 <NOBR style="FONT-FAMILY: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; COLOR: darkgreen; FONT-SIZE: 100%; FONT-WEIGHT: normal" id=itxt_nobr_57_0>control
</NOBR>. 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.
But I am curious what each of these items really translates to.
Is there a significant power difference with a bigger turbo nad hpop? Like are the e99 450 ft/lbs and late made it to 500?
Do the different shape bolts in the front suspension make it handle better?
Early 99 actually has less breaking power? or just shallower rotors?
what difference do longer hub bearings make?
What does it all mean?
Thanks!
Postmaster
Joined: Sep 2007
Posts: 4,005
Likes: 3
From: Mcafee, NJ
I have searched a little on this topic and have found the following list.
But I am curious what each of these items really translates to.
Is there a significant power difference with a bigger turbo nad hpop? Like are the e99 450 ft/lbs and late made it to 500?
Do the different shape bolts in the front suspension make it handle better?
Early 99 actually has less breaking power? or just shallower rotors?
what difference do longer hub bearings make?
What does it all mean?
Thanks!
But I am curious what each of these items really translates to.
Is there a significant power difference with a bigger turbo nad hpop? Like are the e99 450 ft/lbs and late made it to 500?
Do the different shape bolts in the front suspension make it handle better?
Early 99 actually has less breaking power? or just shallower rotors?
what difference do longer hub bearings make?
What does it all mean?
Thanks!
turbo spools faster on e99 but will give up power on hot tunes because of the smaller hpop
i dont know for sure about the others
PREMIUM SPONSOR
Joined: Feb 2009
Posts: 6,038
Likes: 73
I am curious what each of these items really translates to.
Is there a significant power difference with a bigger turbo nad hpop? Like are the e99 450 ft/lbs and late made it to 500?
I can't remember if there is a slight difference but it should be rated on your passenger valve cover.
Do the different shape bolts in the front suspension make it handle better?
I have run both and no there is no handling difference.
Early 99 actually has less breaking power? or just shallower rotors?
SOTP no, but as the loads increase I am sure the larger help with heat dissipation.
what difference do longer hub bearings make?
What does it all mean?
Enjoy it and have fun. If you have question about it feel free to call me.
Thanks!
Is there a significant power difference with a bigger turbo nad hpop? Like are the e99 450 ft/lbs and late made it to 500?
I can't remember if there is a slight difference but it should be rated on your passenger valve cover.
Do the different shape bolts in the front suspension make it handle better?
I have run both and no there is no handling difference.
Early 99 actually has less breaking power? or just shallower rotors?
SOTP no, but as the loads increase I am sure the larger help with heat dissipation.
what difference do longer hub bearings make?
What does it all mean?
Enjoy it and have fun. If you have question about it feel free to call me.
Thanks!
Thread Starter
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Tuned
Joined: Feb 2010
Posts: 402
Likes: 2
From: Colorado Springs
PMS before even having the truck 
May some DP this summer
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Since the injectors are smaller, the HPOP put out less volume. They had to increase the HPOP output in the later trucks because of how thirsty the stock spit-shots are for high pressure oil. I would think the 120cc injectors vs. 140cc sticks in the later trucks are worth 30-40 hp. I know when you go to 160cc single-shots you gain about 40-50, but some of that is because you don't run out of oil on the singles. If you can use the stock splits to their full potential (like by running a mod'ed Termy or Adrenaline HPOP), you should be in the 330ish rwhp range.
Thread Starter
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Tuned
Joined: Feb 2010
Posts: 402
Likes: 2
From: Colorado Springs
Since the injectors are smaller, the HPOP put out less volume. They had to increase the HPOP output in the later trucks because of how thirsty the stock spit-shots are for high pressure oil. I would think the 120cc injectors vs. 140cc sticks in the later trucks are worth 30-40 hp. I know when you go to 160cc single-shots you gain about 40-50, but some of that is because you don't run out of oil on the singles. If you can use the stock splits to their full potential (like by running a mod'ed Termy or Adrenaline HPOP), you should be in the 330ish rwhp range.
Senior User
Joined: Mar 2010
Posts: 330
Likes: 0
From: Harrisburg NC
How many horsepower and foot lbs of torque does the early 99 have and how much does the late 99 have?
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Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
The rotors on the late model aren't any bigger in braking area, the "hat" portion of the rotor is deeper because the unit bearing hubs are slightly different.
As far as power, I think both engines are rated the same. My early 99 claimed 250hp on the valve cover, most trucks say 225 (when equipped with an auto, sticks are rated higher).
"The List" is actually a lot longer than what you posted, Robin (PaysonPSD) is the one who has the most extensive list.
As far as power, I think both engines are rated the same. My early 99 claimed 250hp on the valve cover, most trucks say 225 (when equipped with an auto, sticks are rated higher).
"The List" is actually a lot longer than what you posted, Robin (PaysonPSD) is the one who has the most extensive list.
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as Superduty4x4 stated, the rotors aren't any larger
the flange of the unit hubs on the newer trucks is thicker, thus the "hat" portion on the later trucks is deeper, allowing the caliper to ride in the same location on both.
the flange of the unit hubs on the newer trucks is thicker, thus the "hat" portion on the later trucks is deeper, allowing the caliper to ride in the same location on both.
Thread Starter
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Tuned
Joined: Feb 2010
Posts: 402
Likes: 2
From: Colorado Springs
The rotors on the late model aren't any bigger in braking area, the "hat" portion of the rotor is deeper because the unit bearing hubs are slightly different.
As far as power, I think both engines are rated the same. My early 99 claimed 250hp on the valve cover, most trucks say 225 (when equipped with an auto, sticks are rated higher).
"The List" is actually a lot longer than what you posted, Robin (PaysonPSD) is the one who has the most extensive list.
As far as power, I think both engines are rated the same. My early 99 claimed 250hp on the valve cover, most trucks say 225 (when equipped with an auto, sticks are rated higher).
"The List" is actually a lot longer than what you posted, Robin (PaysonPSD) is the one who has the most extensive list.
Makes sense
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