I am looking at a 2004 3500 QC DRW tomorrow and hopefully by this time tomorrow it will be mine, or at least my credit union's. I understand the HO stands for high output. What does SO stand for? Was SO only for CA emission trucks? I'm not sure which one this one is, but, I do know that it was originally bought in FL. Thanks.

 

HO, was the 325 hp, 610 ft. lbs. model engine. SO, I'm figuring was the 305 hp, 555 ft. lbs. model. The 305 model will get better mileage than the 325, but the 325 has more power.

 

04 HO is 305 HP, 4.5 is 325 HP.

 

It was the 305hp engine and it is sitting in my driveway now.

 

congrats on the truck.. you have a 04 HO then. 305hp.. the SO had 235hp i believe in 04.

 

Congrat's on the truck. I believe you have one of, if not the best models made, IMHO.

Craig

 

03-04.4 HO's are 305, SO or standard output's are 250 and 235 for California.

 

CONGRADS!

04=no catalytic converter!

Get some pics up!

I really love my 2004! (305/555).......

 

X2 love my 2004

 

Wouldn't have anything other than my 04, great choice bud!

 

I just picked one up last week. 242,000 miles on it. I'm waiting for a fax from a long term servicing dealer. Want as much history as possible. In the shop for bearings. I can't wait to drive it. Any recommended fuel mileage mods for us?

 

I can get better than 21mpg with my quad box set on 60hp. Most people like the Smarty programmer but I dont have any experience with them yet.