: The best or most reliable engine in a Cadillac from 1990-2010 your ideas



kwiksilver
04-20-13, 03:02 AM
Will be buying a used Cadillac for my wife. We are not looking for a late model as we have a 2011 DTS. Just big comfortable and reliable. With so many powertrains to choose from I don't want to pick one of wrong ones, the oil leaker or one with the head gasket problems, overheating etc. I have heard that the LT1 in the Fleetwood's are great, but you guys drive them, and your opinion really will matter. Thank you for your advise.

Submariner409
04-20-13, 10:48 AM
This has nothing to do with Site News, registration, or Admin contact. Please read the text in each forum title to find out what gets posted there.

You are asking a question so general and broad in scope that perhaps the best forum for this is down in the Lounge, and area visited by more than half of CF members - many stay in their particular car forum and never venture anywhere else, so they miss the benefit of a LOT of good info. FWIW, your false illusion of models/engine problems is off-base. As with ANY car from ANY maker, your pre-sale inspection and study in forums such as CF is what will tell you which car to buy - not the horror stories that become condensed in a forum that is dedicated to fixing cars - the vast majority of Cadillac owners never come here because they have no need to - or they simply "let the dealer do it".

MrHolland
04-20-13, 11:20 AM
I think all are very reliable but if I had to pick one or two, either L05 or LT1.

Ranger
04-20-13, 11:39 AM
4.9 (L26) gets my vote

I~LUV~Caddys8792
04-20-13, 12:38 PM
My votes are the Chevy 305/350 in the Broughams and the good old 4.9.

drewsdeville
04-20-13, 12:47 PM
I'd say they are all pretty comparable. If I had to pick, it would be the engine with the most recent design.

kwiksilver
04-20-13, 02:18 PM
My apologies for posting this question here. I will repost appropriately.

RippyPartsDept
04-20-13, 02:20 PM
no need to repost ... the mods have already moved the thread for you

kwiksilver
04-20-13, 02:27 PM
Thanks

creeker
04-20-13, 02:50 PM
I have had 3 / 4.9's (and still have a 4.9) they are super reliable and almost bullet proof.

kwiksilver
04-20-13, 03:20 PM
Was the lt1 only available from 1994-96 in the Fleetwood?, and the L26 4.9 was available 1991 Seville,Eldorado the 1994-95 DeVille and in which other models. Also what about the (L05 V8).

CadillacLuke24
04-20-13, 04:07 PM
The L05 was the V8 in the 1993 Fleetwood. The 94-96 Fleetwoods got the revered LT1.

4.9s are are reliable as the sunrise.

A late model Northstar (late 04 and on) should be good to go. No more issues (from what I've gathered) than any other aluminum engine on the road today.

creeker
04-20-13, 04:30 PM
Go to carsurvey.org. (suggest putting in your favorites). great resource for vehicle info., if my present 4.9 ever packed it in, I would be looking for another one,
200,000 miles without major problems is quite the norm.

Jesda
04-20-13, 07:33 PM
Most reliable: 4.9
Best: Chevy V8

CadillacLuke24
04-20-13, 08:36 PM
Since you said 1990-2010, May I suggest an option?

http://cgi.ebay.com/ebaymotors/JUST-10K-MILES-FULL-SET-GOLD-KEYS-WINDOW-STICKER-FACTORY-CHROME-WHEELS-/290901302574?pt=US_Cars_Trucks&hash=item43bb119d2e

kwiksilver
04-21-13, 12:19 AM
It is surprising to me that in 30 years only two engines make the grade from the aficionados on this forum the L05 and the LT1. This limits Sedans more than I would have ever thought. With that being said who has owned or driven both, and which did you prefer?

cadillac kevin
04-21-13, 12:58 AM
It is surprising to me that in 30 years only two engines make the grade from the aficionados on this forum the L05 and the LT1. This limits Sedans more than I would have ever thought. With that being said who has owned or driven both, and which did you prefer?

In daily driving, you won't notice a difference in performance. If you're hammering it, the L05 will move the car from a stop in a hurry, but it will run out of steam. The LT1 will move the car from a stop in a hurry but keeps pulling and doesn't really stop pulling (at least up to 80-90 mph, which is the fastest I've had an LT1).
I'd also recommend the 4.9 as one of caddys best, most reliable engines.

77CDV
04-21-13, 05:57 PM
For the best combo or reliabilty, power, and economy, the 4.9 can't be beat. Available from 1991 to 1995 in a wide range of FWD Cadillacs, you should have no trouble finding a suitable candidate.

Aron9000
04-21-13, 09:31 PM
In daily driving, you won't notice a difference in performance. If you're hammering it, the L05 will move the car from a stop in a hurry, but it will run out of steam. The LT1 will move the car from a stop in a hurry but keeps pulling and doesn't really stop pulling (at least up to 80-90 mph, which is the fastest I've had an LT1).
I'd also recommend the 4.9 as one of caddys best, most reliable engines.

Not true, I owned both the LO5 and LT1. You'll notice a difference when you pull out of your driveway. The LT1 has 80 more horsepower and straight boogies for a car weighing 4500+lbs(its faster than any stock 5.3 or 350 powered GM truck/suv I've driven).

As for most reliable, the L05(or L03 305 v8 in 91-92 Broughams) are a great design, they're GM truck motors. Easy to work on, very simple fuel injection system. Maintain them and they will run forever. The 4.9 Cadillac and LT1 are also VERY reliable, the only thing is the 4.9 is mounted transversely and is a PITA to work on.

Just don't buy a Cadillac with a FWD Northstar motor in it and you're good to go. The RWD N* in the late model STS, SRX, and XLR are much revised and I'd recommend those models.

I~LUV~Caddys8792
04-21-13, 10:07 PM
The 4.9 has that nasty main bearing thump, at least the early ones did. Not a reliability issue per se, but an annoying build defect. I understand after 1992 it was fixed.

01ssreda4
04-22-13, 05:23 AM
5.7 Gen III V8 in the CTSv

creeker
04-22-13, 03:30 PM
The 4.9 has that nasty main bearing thump, at least the early ones did. Not a reliability issue per se, but an annoying build defect. I understand after 1992 it was fixed.


I'm not denying what your saying, but I am on my third 1992 4.9 now and have never experienced the bearing thump problem, I have 165,000 miles on my 92 eldo.
and it runs and sounds great.

bigm57ict
04-22-13, 04:36 PM
I would first decide what kind of Cadillac you are looking for:

Full-size, 4-door RWD - Fleetwood Brougham
Full-size, 4-door FWD - Deville (DHS, DTS)
Mid-size, 4-door FWD - Seville (STS, SLS)
Mid-size, 2-door FWD - Eldorado (ETC)
Cadillac in name only - Catera
Small, sporty 2- or 4-door - CTS, CTS-V
Crossover - SRX
SUV - Escalade
Truck - Escalade EXT
2-Door, 2-seater - XLR

Once you get that nailed down, then you can worry about which engine is best. :)

EChas3
04-23-13, 11:11 PM
I'd highly recommend a car like my wife's, 2005-2010 STS V8. Buy one with the factory 17" wheels for the softest ride.

tanderson2491
04-25-13, 11:18 AM
My father previously had a '90 Sedan DeVille with the 4.9 and he never had any issues with that engine.