Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

04 ctsV questions.

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Old 11-04-2011, 11:29 PM
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Hey everyone, I just picked up a 04 V with blown motor. And I'm trying to decide what to put in it to get it running again. I'm thinking of a ls3 or maybe even a 5.3 or 6.0. What all would be needed to do the swaps I mentioned.
Thanks in advance guys.
Old 11-04-2011, 11:34 PM
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I think you could get by with either. Are you going to keep it? Or do a quick sell? Guess that really is the difference of which way to go with it.
Old 11-05-2011, 12:30 AM
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Originally Posted by lb7duramaxguy
I think you could get by with either. Are you going to keep it? Or do a quick sell? Guess that really is the difference of which way to go with it.
Gonna keep it.
Old 11-05-2011, 08:38 AM
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I wouldn't put an iron block in one of these things. LS3 would probably be my direction.
Old 11-05-2011, 06:48 PM
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So does anyone know if a 6.0 will just drop in and go??
Old 11-05-2011, 07:14 PM
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I don't know about the 6.0 but I would just go back with the LS6. What is wrong with the current engine? Rebuild may be your cheapest option unless you have cracked heads or block.
The more I think about it this sounds like a great project, where are you located and are you interested in selling?
Old 11-05-2011, 07:40 PM
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Originally Posted by 3Camaros
I don't know about the 6.0 but I would just go back with the LS6. What is wrong with the current engine? Rebuild may be your cheapest option unless you have cracked heads or block.
The more I think about it this sounds like a great project, where are you located and are you interested in selling?
I just picked it up. The current engine is hammered. Block is trashed heads are gone. I'd need a complete long block.
But ya everything is for sale. I'm in NM...
Old 11-05-2011, 07:51 PM
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Old 11-06-2011, 09:08 AM
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Originally Posted by 01smokes
So does anyone know if a 6.0 will just drop in and go??
Yes, if you swap over the V's oil pan, exhaust manifolds, intake manifold, accessories, etc. You will need to get an engine with the same reluctor ring tooth count for simplicity's sake.
Old 11-06-2011, 11:49 AM
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Originally Posted by 01smokes
So does anyone know if a 6.0 will just drop in and go??
The iron cases are missing the rear two motor mount bosses/holes that are seen on the LS2/6/7 cases. Our motors use a longer bracket on the case side of the engine mount.

The front four holes may be adequate as several folks have used the iron 6.0 before. Do a search on member 2c5s. His swap was a 6.0 with L92 heads.

Personally, the extra weight (~125 lbs.) over the front end is not something that I would want.
Old 11-06-2011, 09:56 PM
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Id only do iron block if you plan to run a lot of boost. Otherwise i dont see the point in this car. Its not like if you add that extra weight that you can do weight reduction somewhere else cause frankly i dont see where anyone could pull 125lbs off the V without sacrificing creature comforts or dropping a ton of cash on lighter wheels and such.
Old 11-06-2011, 10:07 PM
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Cash is king...if the LS6 is blown and someone is looking to get into the game on the cheap, I wouldn't hesitate for a second to throw an iron block 5.3 or 6.0 in there. Besides, how much difference is 150 lbs really going to make in a 2 1/2 ton sedan? I have at least that much weight hanging on the front from the Maggie and the handling or braking has not suffered one bit.

I say get an iron block and save your money for hookers and blow.

Edit: To answer your question OP, yes, you can use an iron block 5.3 or 6.0, it has been done before.

Last edited by DMM; 11-06-2011 at 10:13 PM.
Old 11-06-2011, 11:02 PM
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Originally Posted by DMM
Cash is king...if the LS6 is blown and someone is looking to get into the game on the cheap, I wouldn't hesitate for a second to throw an iron block 5.3 or 6.0 in there. Besides, how much difference is 150 lbs really going to make in a 2 1/2 ton sedan? I have at least that much weight hanging on the front from the Maggie and the handling or braking has not suffered one bit.

I say get an iron block and save your money for hookers and blow.

Edit: To answer your question OP, yes, you can use an iron block 5.3 or 6.0, it has been done before.
I love hookers and blow!! But I found a deal on a ls6 if it goes through I'll scoop it up if not ether the 5.3 or 6.0
Old 11-06-2011, 11:58 PM
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Originally Posted by DMM
Cash is king...if the LS6 is blown and someone is looking to get into the game on the cheap, I wouldn't hesitate for a second to throw an iron block 5.3 or 6.0 in there. Besides, how much difference is 150 lbs really going to make in a 2 1/2 ton sedan? I have at least that much weight hanging on the front from the Maggie and the handling or braking has not suffered one bit.

I say get an iron block and save your money for hookers and blow.

Edit: To answer your question OP, yes, you can use an iron block 5.3 or 6.0, it has been done before.
A maggie does not weigh 150lbs.
Old 11-07-2011, 01:22 AM
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Originally Posted by itsslow98
A maggie does not weigh 150lbs.
It weighs a little more than you think...the Maggie/intake assembly and two and a half gallons of coolant alone are almost 100 lbs. Add the tank, HEX, magnavolt, tubing, wiring, brackets, pump, hose clamps, etc and you are almost there if not on the nose. I have not weighed it, but I have pulled the crap apart enough times on my own to know its not as light as you think.

Besides, the weight penalty we are talking about here is worth about 10 hp, hardly noticeable in probably 95% of people given how they drive their cars.

Hookers and blow FTW.
Old 11-07-2011, 06:37 AM
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FWIW, I'd think it would be harder to resell with an iron motor in it, especially a 5.3L.
Old 11-07-2011, 12:10 PM
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How much you got?

My $0.02.

Get an LS6, punch it out to 402 and be done with it.

Unless you have about $10k or more to build some rat motor and really scare yourself.
Old 11-07-2011, 06:21 PM
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Originally Posted by heavymetals
How much you got?

My $0.02.

Get an LS6, punch it out to 402 and be done with it.

Unless you have about $10k or more to build some rat motor and really scare yourself.
I don't really want to spend more than 2500 or so
Old 11-07-2011, 08:34 PM
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You need more money.
Old 11-09-2011, 09:14 PM
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Originally Posted by heavymetals
You need more money.

I could find stock motors for around that much or cheaper. I'm not looking for anything crazy or anything.


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