I love mine. I drive it everyday (work, friends, shopping, lake, mountains).On the weekend you'll find itpulling our boat and horse trainer all over. I only run synthetics. Mine did have cracked heads. On the bright side it was aperfect time to have some great work done on it while it was apart. I get 10 to 11mpg on average. I'd get better mileage if i kept my foot out of it more. I didn't buythe truck for the gas, I wanted a truck to work. I'll be honestI did think about buying a cummins, but I went with the 360 and I'm very happy. I had a little trouble finding one with low miles(mine had 75,000). I wanted something that would be around a long time. They seem to go forever.Manywere around 200,000

 

i had the 5.9 in my 01 sport. damn thing would leave ricers in its place, if i was heavy footing it i would get bout 11 otherwise i was getitn 13-14 city and bout 20-22 highway

 

Yeah my 2500 gets about 12 or 13 mpg. The Magnum 360 is a loud, beefy mother and it sure is sweet to have when some punk in a chevy thinks he can take you off the line. I work in an engine remanufacturing plant as a head inspecter and Ican guarantee though, that the magnum 360 heads that come out of the factory are so prone to cracking it would make your head spin. My only complaint with the Magnums.

 

What can you say about the blocks? I am going to be twin turboing my 360 soon and I want to know if the stock block is strong enough for a little boost.

 

Honestly, as far as the blocks go, I haven't seen nearly as many cracked blocks as I have heads. If you are planning on turboing out your 360, you should have it throughly inspected beforehand. If it's in good shape to begin with, you shouldn't have any problems adding some more power to it.

 

It is going to be in a machine shop anyway since I am boring it .30 over and I am getting it sandblasted and all that good stuff.

Thanks for the tip though.

 

I get about 11mpg in my 01 Ram 1500 4wd Offroad with 33" tires. I've seen 12 if I drive it easily.

 

i have never checked my plenum gasket is that a common thing> and how can ya tell its going out

 

I have a 2001 5.9 4 speed auto 4x4 ext cab and in town I normally get 15-16 and on the highway doing about 65 I will get 18-19. But then again I didn't buy this truck looking for good gas mileage.

Jim

 

I'm lucky to get 10-12 in my 2500 4x4 Quad longbed (about as heavy as they get). I usually start to think about filling the 35 gallon tank when i get to 320-340 miles, though I know it'll go a little farther even on dead empty.

Personally, my 360 with 4.10 gears has a hard time getting out of its own way. I don't hammer it--quite the opposite, I drive it with a light foot because of mileage--but it needs second gear to grind up the long hill to my house. Once it's up to speed on the highway, it seems to work better above 65-70 than it does at slower speeds, but I don't know how badly it affects mileage. I have ~75K on it, the plenum is fine and the ignition and O2 sensors are new, so it's running about as well as it should. It just doesn't have enough power for 6000+ pounds of truck.

On that long hill to my house (about1.5 miles), I've actually seen the gauge move when hauling a pallet of 80 lb. bags of concrete (about 3500 pounds) in the bed. It was on the right side of the 1/2 mark at the bottom and the left side by the top. Yikes! But I can't argue with how hard this truck can work--I haven't found a load yet it can't handle, albiet s l o w l y.

For a truck this big, a small block just isn't enough motor.