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<blockquote data-quote="zee800" data-source="post: 7761993" data-attributes="member: 74194"><p>stock for stock 01+ is better to go with IMO.</p><p></p><p>4) What is the difference between 99-00 and 01-up L's?</p><p>99-00:</p><p>They came with a smaller intercooler than the 01+ which was prone to leak, if the owner took advantage of it they were replaced with newer 01+ intercoolers under factory recall warranty so check into yours if unsure.</p><p>They had an 80mm Mass Air Flow Meter or MAF.</p><p>5x135mm wheel bolt pattern and 12mm studs up till 11/99.</p><p>Rated at 360 hp and 440 ft.lbs.trq. from the factory-engine not at the rear wheels. There are some other cosmetic differences also but that can be found later.</p><p></p><p>99 to late 02 have 3-4 threads in the cylinder heads for the spark plugs, 02+ have 8-9 threads and are less prone to spark plug blow out.</p><p></p><p>Rear gear ratio 99-00=3.55</p><p>Rear gear ratio 01-04=3.73 </p><p></p><p>The driveshaft difference. 99-00 3" steel. 01-up 5" aluminum.</p><p></p><p>01+:</p><p>Bigger/upgraded intercooler.</p><p>90mm MAF</p><p>5x135 wheel bolt pattern with 14mm wheel studs.</p><p>Rated at 380 hp and 450 ft.lbs.trq from the factory-engine not at the rear wheels.</p><p></p><p>03-04 have the updated impeller on the water pumps and are more efficient than 99-02.</p><p></p><p>03-04:</p><p>The only real difference was they come with heavier rated rear leaf springs in the back and thus have about 1" additional ride height from previous years, this was done only to increase the payload. Again some cosmetic differences are present but will be found later.</p></blockquote><p></p>
[QUOTE="zee800, post: 7761993, member: 74194"] stock for stock 01+ is better to go with IMO. 4) What is the difference between 99-00 and 01-up L's? 99-00: They came with a smaller intercooler than the 01+ which was prone to leak, if the owner took advantage of it they were replaced with newer 01+ intercoolers under factory recall warranty so check into yours if unsure. They had an 80mm Mass Air Flow Meter or MAF. 5x135mm wheel bolt pattern and 12mm studs up till 11/99. Rated at 360 hp and 440 ft.lbs.trq. from the factory-engine not at the rear wheels. There are some other cosmetic differences also but that can be found later. 99 to late 02 have 3-4 threads in the cylinder heads for the spark plugs, 02+ have 8-9 threads and are less prone to spark plug blow out. Rear gear ratio 99-00=3.55 Rear gear ratio 01-04=3.73 The driveshaft difference. 99-00 3" steel. 01-up 5" aluminum. 01+: Bigger/upgraded intercooler. 90mm MAF 5x135 wheel bolt pattern with 14mm wheel studs. Rated at 380 hp and 450 ft.lbs.trq from the factory-engine not at the rear wheels. 03-04 have the updated impeller on the water pumps and are more efficient than 99-02. 03-04: The only real difference was they come with heavier rated rear leaf springs in the back and thus have about 1" additional ride height from previous years, this was done only to increase the payload. Again some cosmetic differences are present but will be found later. [/QUOTE]
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