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Re: Replace exhaust manifold bolts?
I wouldn't worry about it right now, but it is something that you may want to get around to on a lazy afternoon for a few dollars.
Sorry to hear about your mpg. The 3.73 gears in most 1500hd trucks make them a little slow off the line but when the get rolling they move and get a little better economy than the 4.11 rears. My 1500hd was lazy until I got my computer flashed by black bear performance, the efficiency went up as well. Take a look at my build thread for more info on what can be done to optimize your truck and what results I got.
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