Difference in V10's?
Postmaster
Joined: Jun 2008
Posts: 2,564
Likes: 11
From: Wayyy NoCal, USA
'99 is non PI heads, 2000+ has the PI heads. Better torque and hp. Good things.
Exhaust studs: No difference. They still rust if exposed to lots of moisture and salt.
Spark plugs: I believe the '03 would have the additional plug threads which are quite a bit more idiot proof.
But... they are still aluminum heads and as with ANY engine with aluminum heads, if any person at any time overtorqued them while installing them, they will have damaged the threads so it is possible to spit a plug. Fortunately, by 2003 most "mechanics" had learned their lessons (can't go by "feel" and torque the bejeebers out of them like you can in an iron head...) and were far less likely to screw the job up. Reports of plug spitting in the '03's and later seem very sparse.
Exhaust studs: No difference. They still rust if exposed to lots of moisture and salt.
Spark plugs: I believe the '03 would have the additional plug threads which are quite a bit more idiot proof.
But... they are still aluminum heads and as with ANY engine with aluminum heads, if any person at any time overtorqued them while installing them, they will have damaged the threads so it is possible to spit a plug. Fortunately, by 2003 most "mechanics" had learned their lessons (can't go by "feel" and torque the bejeebers out of them like you can in an iron head...) and were far less likely to screw the job up. Reports of plug spitting in the '03's and later seem very sparse.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Go for the 2003 for all the reasons already mentioned. Not that the '99 is a bad platform, but overall, if I had the choice and the money, and the prices were about the same, it's a no-brainer.
Thread Starter
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Senior User
Joined: Aug 2007
Posts: 104
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Yeah, definitely leaning towards the 03. It's a bit more, but it's also a crew cab lariat where the other is a supercab XLT and the additional cab room would be nice for the kids and dog.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
If you have kids, get the crew. I wish I had. My 16-year-old can no longer sit in the back comfortably, but then, he's taller than the wife now 
The dog has been moved to the bed
The dog has been moved to the bed
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Postmaster
Joined: Jun 2008
Posts: 2,564
Likes: 11
From: Wayyy NoCal, USA
Ahh, but the '99 Supercab has the fold down rear seat! I absolutely love it, and can't believe they eliminated it.
Still, it sounds like the later crew may be better for your needs.
Still, it sounds like the later crew may be better for your needs.
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