I Thought I had a HO but when I went to have a new 4" exhaust on the end piece didn't match the turbo. My mechanic did some checking and the 'Advertised HP" is 305hp on the engine sticker. I can't find any of the old paperwork but wasn't the HO 325hp on the '04?
My window window sticker says HO and the dealer computer says it has a HO in it.

Can someone help me out here?

 

04 HO engine has 305 HP 555 TQ. 04.5= 325/600

 

For better clarification-- you DO have an HO. The 04 HO, though, has a 3.5" elbow on the turbo. The 04.5 HO has a 4" elbow. that is the difference you saw. Buy someones 4" elbow for about $50, put it on the turbo and you are golden.

 

He's got the elbow for the exhaust covered NOW, the question was whether or not the 305hp was the HO in '04.

 

2004 = non HO 2004.5 = HO "600" Engine. Half way during the production year in 2004 the updated the eninge/ ratings.

 

Like said above: In '03 and '04, the HO had 305hp/555tq. In '04.5, HO had 325hp/600tq. Both are HO's.

 

And both are excellent motors.

 

And with Smarty, all things are equal.

 

Can't comment on the 325hp but, the 305hp is an excellent motor.

I have figured out why SO many people pull out in front of me when I'm pull'n my 5'er. Because SO many 5'ers are pulled by Fords. I make a special effort to stay right on those people's asses.

Thank's for the info.

 

Here is a break down of the motors and trannys based on year:

2003 S.O. Federal Emissions: 250HP/460lb.ft. Available with NV4500 or 47RE
2003 S.O. Calif. Emissions: 235HP/460lb.ft. Available with NV4500 or 47RE
2003 H.O. Federal Emissions: 305HP/555lb.ft. Only available with NV5600
2003.5 The 47RE was replaced by the 48RE automatic transmission and available with the H.O.

2004 S.O. Calif. Emissions: 235HP/460lb.ft. Available with NV4500 or 48RE
2004 H.O. Federal Emissions: 305HP/555lb.ft. Available with either NV5600 or 48RE

2004.5 (50 state legal) 325HP/600lb.ft. Available with either the 48RE or NV5600

2005 (50 state legal) 325HP/610lb.ft. Available with either the 48RE or NV5600

2005.5 The NV5600 replaced with the G56 6spd manual gearbox.

 

And no cat on the 03-04 HO

GB

 

I have a cat.

 

The Cummins 600 were the beginning of the cat on 3rd gen 04.5^.

 

What is different about the SO and HO motors besides the rating? Different parts?

I'm in the market for an 03 and I would imagine I want the HO, but I plan on modding it. Is it like buying a Z71(back in the 90s) and then lifting it, thus replacing most of the upgraded suspension components?