I wanna drop a LS3 into my 05 V and your gonna tell me how.
06-23-2010, 05:09 PM
#1
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I wanna drop a LS3 into my 05 V and your gonna tell me how. Do I need to swap the PCM or just the crank trigger (58 tooth?)
If I don't need to swap PCMs, then I will need the Ls1 to LS2 conversion for the TB. What about the knock sensors?
What else am I missing?
If I don't need to swap PCMs, then I will need the Ls1 to LS2 conversion for the TB. What about the knock sensors?
What else am I missing?
06-23-2010, 07:19 PM
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http://www.cadillacforums.com/forums...hen-you-3.html
Very cool Video. Im glad you are finally enjoying your car. It is one of the nicest black 2004s i have seen. It was sad all the stuff you had to go thru to get it to this point. Im sure you will be enjoying that setup for years to come. This car drives perfect! I almost wish i set mine up like this as it is just perfect on how much power vs car ratio it has. Smooth.
The clutch assembly just needed to be shimmed a little different for some reason to set the clutch motion to be correct. It was only in and out about 5 times before i had it exact. I dont remember how much needed to be added.
This swap will be pretty much impossible for others to do if they are going to run the full motor with the throttlbody and everything. The computer needed major changing even after the 58k converter was used, to make all the 2004 computer work with it. When you try, it will shut off any time you touch the gas. In the future, i will post the raw hex segment i modified to make it work without failure.. The conversion of pedal to throttle opening is way off if you dont. so it thinks it is stuck open.
Other than that, the car went together very well. Except tracking down new parts for some stuff, the dealers where slow to get them.
The clutch assembly just needed to be shimmed a little different for some reason to set the clutch motion to be correct. It was only in and out about 5 times before i had it exact. I dont remember how much needed to be added.
This swap will be pretty much impossible for others to do if they are going to run the full motor with the throttlbody and everything. The computer needed major changing even after the 58k converter was used, to make all the 2004 computer work with it. When you try, it will shut off any time you touch the gas. In the future, i will post the raw hex segment i modified to make it work without failure.. The conversion of pedal to throttle opening is way off if you dont. so it thinks it is stuck open.
Other than that, the car went together very well. Except tracking down new parts for some stuff, the dealers where slow to get them.
06-24-2010, 12:13 PM
#7
Your injector harness plugs will have to be converted to the EV6/USCAR type or you can use adapters here also. The plug swap is a much more professional approach.
The throttle body will also require an adapter harness or you could go for the gusto and get one of the NW DBW TBs which are compatible with your current harness.
Some of the new motors (LSA & LS9) have an 8-bolt flywheel flange also but I don't know for sure about the LS3. Something else to check on!
You can call Jason Harding at Katech and he can fix you up with all you need to do the swap, except of course, the tune.
It's a very straightforward swap, very similar to mine.
After a few weeks of test driving, I removed all the adapter harness stuff and hardwired everything for a more finished appearance, so I also have all of the harness adapter stuff available. PM me if you're interested.
Last edited by scatillac; 06-24-2010 at 04:58 PM.
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06-24-2010, 01:18 PM
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Thanks for all the info!
I would have kept the blower on the car if I thought I was gonna keep the car. Up until a few days ago, I thought I was gonna be down to no cars, my bike, a work truck and a CTS-V 2 at the end of my contract. Now it looks like I am gonna be staying in the good ole USA for the next year and instead of a V at the end of the contract, I get a nice signing bonus and moving cash.
I would have kept the blower on the car if I thought I was gonna keep the car. Up until a few days ago, I thought I was gonna be down to no cars, my bike, a work truck and a CTS-V 2 at the end of my contract. Now it looks like I am gonna be staying in the good ole USA for the next year and instead of a V at the end of the contract, I get a nice signing bonus and moving cash.
06-24-2010, 11:15 PM
#10
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How much do you think a LS3 swap would cost? For everything. Motor, labor, parts. Just wondering. And how much are ls6's going for these days? I'm just wondering if this is cheaper than a maggie in the long run.
06-25-2010, 08:49 AM
#11
The LS3 swap (done right) would be more expensive but far more reliable than most of the current aftermarket stuff. I think that an even better option is an L92/LS3-based 416, which could be done for a just few more bucks than an LS3.
After all, the changes made to accommodate an LS3 would also accommodate a larger motor with ease with only the tune being different. Why settle for 29 more cubic inches when you could have almost 70 more?
06-26-2010, 05:14 AM
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The LS3 swap (done right) would be more expensive but far more reliable than most of the current aftermarket stuff. I think that an even better option is an L92/LS3-based 416, which could be done for a just few more bucks than an LS3.
After all, the changes made to accommodate an LS3 would also accommodate a larger motor with ease with only the tune being different. Why settle for 29 more cubic inches when you could have almost 70 more?
After all, the changes made to accommodate an LS3 would also accommodate a larger motor with ease with only the tune being different. Why settle for 29 more cubic inches when you could have almost 70 more?
06-30-2010, 11:57 PM
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i did the swap -LS3 block 416 ci but with a 122 blower on it- the best advice i can give is get the harnesses for the crank trigger and the knock sensors ( i got one that was wired wrong-headache) but be sure to drill out the block to accept the old style sensors- i missed this step and had to repull the motor out again to do it. Otherwise i used the origional computer and all accessories and sensors.
Good luck.
Good luck.
07-01-2010, 02:26 AM
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i did the swap -LS3 block 416 ci but with a 122 blower on it- the best advice i can give is get the harnesses for the crank trigger and the knock sensors ( i got one that was wired wrong-headache) but be sure to drill out the block to accept the old style sensors- i missed this step and had to repull the motor out again to do it. Otherwise i used the origional computer and all accessories and sensors.
Good luck.
Good luck.
ls-3 swap 
07-03-2010, 09:46 AM
#16
Use a tubing sleeve over your bit to prevent over-drilling. 
The tap for the LS1/6 sensors is an M10x1.5. You will most likely have to adjust the sensitivity levels on the early type sensors to get them to function properly.
Also, if you're using the case from an LS2 GTO or an LS7 case, you'll also need to drill the hole (which is stepped) for the dipstick.
The tap for the LS1/6 sensors is an M10x1.5. You will most likely have to adjust the sensitivity levels on the early type sensors to get them to function properly.Also, if you're using the case from an LS2 GTO or an LS7 case, you'll also need to drill the hole (which is stepped) for the dipstick.
