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Looking for better towing performance. 2003 quad ,longbed ,5 speed ,3. 73 stock. This is my 2nd cummins and I love the dependability(only 1 injector and 1 xfer pump replaced with 145000 mi. ). I am trying to decide whether to increase the power of the 250 hp engine or look for a newer truck that...

My 03 longbed 5 speed has a loud 'tinny 'vibration not too far above idle. [in gear under load] It sounds like what I would expect a heat shield or a large piece of sheet metal vibrating to sound like. It's not a huge deal but while easing through campgrounds or town driving, makes the truck...

A couple months ago Ithought I felt my truck skip or miss while idling. It is very random and if someone else was driving probably would have gone unnoticed. Truck runs fine, no smoke or noises,no change in mileage, just sometimes when you come to a stop you can feel a shake through the shifter...

Is there anything to gain on a stock 03 non HO engine by changing fom the 3. 5 pipe from eng to muffler to the 4 incher? [and new muffler]And am I thinking correctly that a later model elbow will fit and allow a 4 inch down pipe to be attached to my turbo? Thanks for any input.

Ok, this may be a stupid question but until I ask it I'll be wondering. I have an '03 quad,long bed ,2 wheel drive 5speed with the "std" output eng. Can anyone tell me what cummins did to change to the HO for this same year. I like the reliability, and durability of the stock engine and was...

I bought my 03 L/B 5speed used about 2 months ago. Soon realized the a/c was acting up. The first problem was that the air would not come out the correct ducts all the time (sometimes feet instead of face etc. ) I removed the dash and fixed the flap that directs the air between the lower...

I have a question. Hopefully not a problem. 1998. 5 quad longbed 2wd autotowing 7500 maybe 1 weekend a month. Daily driver otherwise. 158000 miles 2nd lift pump,new starter contacts, speed pickup in diff, 1 leaky rear axle. K/N filter ,bone stock and RELIABLE so far [just like I like it!] I...