: What is the easiest and cheapest engine to swap into 4100 Deville??



CADDYDADDY13
09-03-10, 10:29 AM
I am going to look at an 83 Sedan Deville with 60,000 miles on her. She is two tone white and gold. But guy says she has engine problems, doesn't know what(it was his grandfathers car, who just passed away). He is only asking $400.
So if she is as nice/clean as she looks in the pics i think i might go for it.

But my question is what would be the easiest engine to drop in her?
I know all about the problems with the 4100 cars, but i want something that would just be good for a daily driver,with some actual power to move car! Something that wouldn't take alot of work and would be relatively cheap.... i am on a budget of around $1500.

any suggestions? I know you guys know all about these things!

sven914
09-03-10, 12:22 PM
The Oldsmobile 307. The 307 was used in many GM vehicles during the '80's, so finding one for cheap shouldn't be too much of a problem. The 4100 cars used the same transmission as the 307 equipped cars, so you do not need to find a new transmission either. And because the 307 is only slightly more powerful than the 4100 (but 100 times more reliable), you can keep the rear differential. The 307 is carburetted, so it can easily be made to function without the aid of computer controls.

GeneLaw1
09-03-10, 12:25 PM
I know nothing about how easy it is to swap, but I can piggy back on the engine being reliable, in 6 years of ownership and now at 176k miles, I have never had a problem out of that 307, while not the most powerful engine on the road, it will get you there...

outsider
09-03-10, 12:37 PM
yeah, the 307 is very reliable but I can't recommend it because of the lack of power. An olds 350 might be better...just as easy to swap although you may need to upgrade the tranny and rear end. I've heard conflicting things about that.

sven914
09-03-10, 12:41 PM
^If you don't upgrade anything, you can't use the 350's horsepower, and you'll be stuck going as slow as a 307 Brougham. Without upgrading, you might as well just get the 307 and be happy.

outsider
09-03-10, 01:14 PM
^ Cool, good info!

jayoldschool
09-03-10, 02:09 PM
Easiest... put in another 4100. You can buy a rebuilt long block for your your budget. I know, everyone will say to put something else in, but swaps always bring issues (see some of the engine swap threads for what I am talking about). You can put in another 4100, everything will hook up like it is supposed to, all your computer stuff, AC, diagnostics, etc, etc, will still work. When mom's 84 4100 went with 55 000 miles, a rebuilt was installed. It has gone another 80 000 miles with no problems.

sven914
09-03-10, 02:17 PM
^Going with he same engine is always an easy swap. But wouldn't it be hard to find one that hasn't already failed (that's usually why that mint Coupe de Ville is stilling next to the crusher), and with the block being aluminum, would one be cheap?

outsider
09-03-10, 02:26 PM
For $1500 you should be able to find a killer engine! If you start eating away at that budget for labor costs of having someone else put the engine in...then you're really left with more like $500 for an engine and you don't get much for $500...although sometimes you get lucky (there's an olds rocket 350 on craigslist in maine for around that)

creeker
09-03-10, 02:29 PM
Easiest... put in another 4100. You can buy a rebuilt long block for your your budget. I know, everyone will say to put something else in, but swaps always bring issues (see some of the engine swap threads for what I am talking about). You can put in another 4100, everything will hook up like it is supposed to, all your computer stuff, AC, diagnostics, etc, etc, will still work. When mom's 84 4100 went with 55 000 miles, a rebuilt was installed. It has gone another 80 000 miles with no problems.

I thought I remembered reading that the later 4.1's had some improvements on them.

jayoldschool
09-03-10, 04:18 PM
That is what we were told as well when mom's engine was swapped. Can't confirm, but it is still running fine...

Bro-Ham
09-03-10, 04:34 PM
How about a 5.7 diesel? :) I would love a 1984 Sedan deVille diesel. :)

csbuckn
09-03-10, 04:41 PM
There's an 83 diesel on my craigs for 3K, very clean. I think the small block Chevy would be the cheapest way. Build it and throw a carb on. But the Jasper 4100 would be nice to keep everything working right.

Bro-Ham
09-03-10, 04:48 PM
CS, What is a "Jasper" 4100?

Bro-Ham
09-03-10, 05:35 PM
CS, Here it is - lovely!! :)

http://minneapolis.craigslist.org/wsh/ctd/1932957333.html

jayoldschool
09-03-10, 05:41 PM
Jasper is a major engine rebuilder. They deliver to install shops.

http://www.jasperengines.com/index.php

CADDYDADDY13
09-04-10, 01:58 AM
Well I went to check out the car. Definately looked better in the pics. It was in ok condition i guess. It had a factory moonroof which was very cool! And i like the two-tone paint, but otherwise, had a large dent in driver's door, rust at rockers, and door edges. Couldn't get her started. Interior very dirty. Needs new headliner.
If i had the time i would get her or if her body was perfect i would. But for my free time and budget have to pass.

jayoldschool
09-04-10, 02:03 AM
Right decision.

GeneLaw1
09-04-10, 02:56 AM
I thought I remembered reading that the later 4.1's had some improvements on them.

If thats the case I may eventually swap one or get mine rebuilt if needbe...