'04 6.0 LQ4 IS IN

I got my 6.0 installed a couple of weeks ago. To my wifes suprise nothing has gone wrong yet, besides the crank pulley for the whipple comming loose during a tuning session. Allen was trying to prep me for buying a new tranny the way it sounded.

The performance difference is most noticable down low, and it made a HUGE difference.

For anybody thinking about this conversion - DO IT!!! There were zero problems with the swap. The only small snags, and I mean really small, came when hooking up the fule lines and a vacuum fitting on the new intake manifold.

Engine Swap Diary

I did loose 1.5 psi of boost in the swap. I guess the bigger motor just breathes a little better. I'll be searching for some smaller whipple pulleys to play with really soon and then getting some track times.

Bigger engine needs bigger air. It makes sense that you lost boost.

If you're still running about on a 60E... I'd start looking into something else.

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Originally posted by Hit Man X@May 6 2005, 02:30 PM
If you're still running about on a 60E... I'd start looking into something else.

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I've been keeping my eye out, but I don't drive that hard typically, and mine is still working with 80K on it. I hope it will make it another 25k or so.

great!!! enjoy the new power its a blast thats for shure :thumb:

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Originally posted by rosscob@May 6 2005, 03:32 PM
I've been keeping my eye out, but I don't drive that hard typically, and mine is still working with 80K on it. I hope it will make it another 25k or so.

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That's good, I don't drive like a nut either. :smile:

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Originally posted by rosscob+May 6 2005, 02:32 PM--><div class='quotetop'>QUOTE(rosscob &#064; May 6 2005, 02:32 PM)</div>

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<!--QuoteBegin-Hit Man X

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@May 6 2005, 02:30 PM
If you&#39;re still running about on a 60E... I&#39;d start looking into something else.

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I&#39;ve been keeping my eye out, but I don&#39;t drive that hard typically, and mine is still working with 80K on it. I hope it will make it another 25k or so. [/b]

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Adding the new power you better start looking now.

Does Allen still have that transmission for sale? (grin)

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Originally posted by rosscob@May 7 2005, 07:15 PM
Does Allen still have that transmission for sale? (grin)

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Go for a 200-4R or an 80E, I wouldn&#39;t even waste money on a 60E at your type of torque levels. IMO

If the 200r4 will do the job I sure wouldn&#39;t waste the HP by going to an 80E unless you pull a heavy trailer. I just wonder how it will handle the load of a heavy truck. The Grand National is quite a bit lighter so not too much torque load on the transmission. Do you know of anyone that has done a 200r4 in a truck and how has it done so far?

What about the 4L65?

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Originally posted by RedHeartbeat@May 8 2005, 12:48 AM
If the 200r4 will do the job I sure wouldn&#39;t waste the HP by going to an 80E unless you pull a heavy trailer. I just wonder how it will handle the load of a heavy truck. The Grand National is quite a bit lighter so not too much torque load on the transmission. Do you know of anyone that has done a 200r4 in a truck and how has it done so far?

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I haven&#39;t seen anyone do it yet, someone needs to. With a billet input shaft w/ input drum it&#39;s hardcore strong. FAR better gear ratios, clutch pack for OD, etc.

Weren&#39;t Regals close to 4000lbs? Don&#39;t forget boost makes a lot of torque. I&#39;d run that before I&#39;d consider an 80E due to power loss. Too bad there are no 4x4 200s.



I just do not see a 60E or any such variant being durable behind that sort of power. The internals are just not designed for it. :sad:

Thanks HitMan&#33; You are a wealth of information&#33; Not exactly what I wanted to hear, but mine is&#39;nt broken yet.