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99 or 99.5?

1295 Views 8 Replies 8 Participants Last post by  DieselDeaf
I have an earlier 99, production date 7/98. And I can't seem to figure out why my truck has the stuff it has. Th updated airbox vented out the front, correct? It has that one, not the fender well intake. The HP rating on the valve cover is 250hp, not 215, 225, 235 like some, and I thought that wasn't available until late 2000. And If someone can help, how do I know which turbo is on my truck? It will be replaced soon soo I think I might need to know.
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I know the 215 is from REAL early '99's that still had the non-intercooled PSD in it. It was like they attached the new body to the old engine and chassis.

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Interesting, I have never heard of a diesel SD without an intercooled engine. Maybe a chassis test bed prototype that was crushed or some offbeat Mexican Federale special, are you sure about this?

I think your early 99 does not have the intake air heater. What you're seeing is a vacuum switch and tubing. The IAH looks like electrical terminals wired into the pipes, like a toaster oven ordeal.
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