Difference between an 01 and 04 L ?

[steve goddard]

I know the difference between an the 99/00 L's and the 01 L but (ie, taillights, maf, spark plug thread issue, 3.73's, Bilsteins ) were there any changes/differences between an 01 and an 02, 03 or 04 ?

Going to be buying another L soon. Thanks.

P.S. Hi Larry. I trust all is well.

 

[Derek@Amazon]

03/04 has the updated heads with more threads...

02 and up you get the key pad on the driver door

03/04 have a diffrent timing curve or so ive been told.
03/04 also have a 4wd stance like WHOA!

 

[ChrisNelson]

http://www.mdsonline.ca/f150g2hist.htm

 

[Scuba-Matt]

03 & 04 also have a improved water pump

 

[steve goddard]

Thanks for your help guys !