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  1. 500, 472, 425, 368
    Ok, so I have bought this beauty earlier this year and am considering swapping out the 425 for a 500. Before I make any rash purchases, I just want to know if there anything that I could salvage from the 425 to bolt onto the 500. I’ve heard they’re both pretty much the same engine just one has a...
  2. Seville and Eldorado Forum
    So I bought an 85 eldorad in AMAZING shape with 36000 original miles! However I DO NOT like the 4100 engine. It has no power...at all. Upon researching the engine I've read it is one of the worst engines Cadillac made. So I want to replace it. I'd LOVE to have an LS swap done, but I haven't...
  3. Seville and Eldorado Forum
    Has anyone done an LS swap on an 85 Eldorado? Would it be possible? Im not a mechanic, I have guys for that. I love my 85 but I don't love the 4.1. And if its not possible, what would be a good alternative to the 4.1?
  4. ATS General Discussion Forum
    Ok listen I’m a enthusiast. Please don’t tell me it makes no sense and don’t tell me to get a ls motor or the engine from an ats V I only want to know if this will work. let’s start off with what I’m trying to do, I Have a ats 2.0l performance witha few upgraded parts it pushes about 500hp ok...
  5. ATS Performance Mods Forum
    Hello Fellow ATS owners and enthusiast. I’m assuming Cadillac didn’t use a V8 in the ATS not because they wanted it to compete with members in its size class but because it would have been faster than the CTS. Because of the weight difference I believe the ATS is pound for pound superior than...
  6. CTS First Generation Forum - 2003-2007
    Hi all! I've got CTS 2007 2.8L LP1 Engine and it's slow... So in one day I decide to swap it some this more fun. Because of difficulties getting an LS engine in our country I choose Northstar LH2 4.6 with 5L50E trans to swap. So I already got engine and trans kit from RWD 2006 STS. Also got...
  7. RWD DeVille/Fleetwood, Brougham 19xx-1996
    Hello all, so my question is will any small block fit into my 85 Fleetwood? Im looking at a 69 buick 350 carbed and i was wondering how different it would be to swap into the caddy rather than an olds 350 or chevy 350 or even an ls? I will keep the engine carbed as i can just get rid of more...
  8. RWD DeVille/Fleetwood, Brougham 19xx-1996
    Hello everyone. In the future im looking to put a 350 Small block in my 85 fleetwood. Is it possible to do so? And how much would i have to change on the car to actually get the engine in and working? Thanks all.
  9. XTS Forum- 2013-2019 Including XTS V-Sport
    Hey Guys, I have 13 xts with the naturally aspirated 3.6 lfx v6. Its got about 300k miles and Im looking to swap in an engine and trans from an xts v with the twin-turbo. How difficult would this be, I have no doubt that everything would bolt up but am more so concerned about the ECU could I...
  10. HT4100 4.1, 4.5, 4.9
    So I am looking to buy a 1985 Eldorado with an HT 4100 V8 and have heard a lot of negative things about them. So, realistically, what engine would I be able to swap in that is reliable? P.S: Just joined this forum and am super stoked to join the community!
  11. SRX 1st Generation Forum - 2004-2009
    We just lost compression in cylinder 6 after having just purchased a 2006 SRX with only 120K miles that was regularly serviced and in great condition. It was running through oil like crazy and then about 3K miles into having it started idling rough... diagnosis at the shop was 23 psi in the...
  12. ATS General Discussion Forum
    I made a post in the past like many others about needing to replace the engine in my 2013 ATS 2.0T. Since then I’ve had more issues, and after taking it to the dealership to get diagnosed they said it needs ANOTHER engine. That would make this my second engine swap. 1.I got the car from Brogan...
  13. CTS First Generation Forum - 2003-2007
    I have a 2003 CTS with a bad engine would a Ford 4.6 v8 fit in the car easily or would I have to do fabrications to the engine bay
  14. FWD DeVille 1985-2005, Fleetwood, and 60 Special
    So, just curious, how possible would it be to swap a Buick 3800 Series II Supercharged engine into a 2002 Cadillac Deville? Let’s say I use a Buick Park Avenue (97-05) as a donor vehicle. I’ve seen someone do it using a Pontiac Bonneville as a donor vehicle to a Seville STS. Just looking for...
  15. ATS Performance Mods Forum
    Hello everyone. I drive a Cadillac ATS 2013 AWD. I drove 66,500 miles. The engine covers began to sweat and I decided to change not only gaskets, but also chains, crankcase valves. Compression showed slight deviations and I decided to install forged pistons. It is also planned to install a cold...
  16. 2008-2013 CTS General Discussion
    Hello, I’m thinking about taking a 2010 Cadillac CTS 3.0 and swapping the engine out with a 2014 3.6 TT. This would be my first engine swap, and I’m looking to see if anyone has done it or has thought about it and what I would need. I’m not really worried about price of the swap. I like the look...
  17. CTS First Generation Forum - 2003-2007
    Hello I have so questions to ask,I have 2008 xl7 suzuki which has gm engine LY7,my engine broke down so Iam looking to swap it some of my friend suggested that cts 3.6 engine would fit in,so can you give guys give me some advice?
  18. 2014-2019 CTS General Discussion
    A few years ago I bought a 2015 2.0L RWD CTS and I was wondering if there’s any hope in upgrading the engine to a 3.6L. I was looking online for an engine replacement and found a few great deals on a LFX RWD engine. So yeah my general question is would it be possible and what should I take into...
  19. ATS General Discussion Forum
    Hey yall, 2.0t just popped and I’m looking to build another motor to put in it and swap it out to reduce down time, I’ve been looking on LKQ for some motors and all the ones that “fit” my 2015 are motors from 2013-2015 cars and have 60k miles, there are motors out of 2016 and even 2018 with 6k...
  20. RWD DeVille/Fleetwood, Brougham 19xx-1996
    Hope y’all are well, it’s been a while but you’ve given some great advice in the so I figure I’d go to the well again...... my dear all original 71deville refuses to crank. Back story is it fell victim to some mild flooding here in New Orleans. Wasn’t too bad, but did get some water in the oil...
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