1982 Cadillac Coupe DeVille DIESEL

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midnitesquirldog1: Great engine when well taken care of, I had one it went bad it had 230,000 miles on it i just dropped in a 1971 Oldsmobile 350 gas engine it was $1,800 for everything all rebuilt, i would of replaced it with a replacement diesel 350 but they wanted $3,500 for the rebuilt engine.

Shane Spencer: The Diesel-powered Cadillacs are extremely rare...most Cadillacs of the time had their own V8 engines, like a 500 CID, a 425 CID, an HT 4100 with digital fuel injection, a 4.5L and a 4.9L, both having fuel injection.

bigfoot060775: I had a 1983 Oldsmobile Delta 88 with that 5.7l Diesel which I had inherited from my grandparents. It had 208k miles before reaching catastrophic failure in 1997. I wanted to have it rebuilt, but no mechanic really wanted to do it.

gatewaysolo104: lifters sound noisy

Steve Holsten: I'd give my eye teeth to have one just like it; especially with the DX engine.

Alexander S: Thank you for sharing! I am looking buying a 1982 Cadillac Sedan Deville Diesel. It has 77k with the replacement Mr. Goodwrench engine. Any tips for what I should look for under the hood to make sure its in decent shape? If I get this car I will want to do all of the mods that you shared here. Thanks!

Brandon Long: very good!!!!! ,your exactly right. very good info. i just finished rebuilding mine!! ,love it!!!

Tim: Sounds immense!

Will C: Dude u rock for having that in that cond. Your right about the number of those that got trashed/wasted. I think they made FAR fewer of those than the 4100s. Wonder why gm used the weak 200 4R trans & not a TH 350/400? That tranny can get torn up from the 4.3 chevy truck engine. So who knows why they used it with the V8s. But looks like u eliminated most of the common issues. happy motoring. I think fuel economy was close to 30mpg for the folks wondering. 

Spencer Martin: what kinda milage does this thing get?

d barboza: They also came with the Craftsman diesel that was pretty good. 

thunderstorms06: I remember standing next to the owner of my local Cadillac dealership and him showing me one of these cars brand new,I wish id bought one wrapped it in plastic n stored it away till i found someone who knew how to do all these mods with a fresh new one....

Joe Moorman: That's like looking at a Triumph Stag and saying the Europeans don't know how to make good gasoline engines.

Elias Rella: Hey how much do these ones go for now a days?

Richard Gray: I currently have this 82 Cad Diesl. as you mentioned the head bolt problem which I current have. I'm having trouble finding the right head bolts? The replacements that I've found say they don't have the studs on top. So....question: is it nesessary to have the bolts with the studs on top? Do you know where to find them? Oh by the way I enjoyed listening to your vid...POS lol. very good. this particular cadillac is in mint condition with 50,000 orignal miles. Thanks

Corvus Casull: Yes they did, well at least here in the 'States. I've always had an eye for the off-kilter; the weird part of the world has always been far more fun and interesting than the generic boardwalk. Thanks for the kind words.

bisquik3006: Kudo's to you for thinking outside the box. GM really tarnished the reputation for diesel engines. Either way, I have to appreciate anything "odd ball".

san379: more vids in color..walk around

RetroGuy76: True! I had mine checked out by an "older" mechanic at the dealer & he said mine doesn't even need the GM pellets yet. These engines (esp. the power) get a bad rap by younger dudes because they are used to 0 to 60 in 10 seconds! LOL. People have to remember back then luxury cars were built for comfort, not speed, & the national speed limit was 55. I know a guy who's dad bought an 84 coupe with the HT4100 new & he had 175,000 miles on it & not one bit of trouble. Its all about maintenance.

Corvus Casull: Another serious compliment! Thanks! Though I couldn't in good conscience actually compare it to the Macks of yore. I imagine the remaining HTs are not as horrible as everyone remembers. People beat the snot out of cars and then are furious when they grenade, but I bet if you baby that old Cadillac and keep mind of its weaknesses, it'll do fine.
1982 Cadillac Coupe DeVille DIESEL 5 out of 5

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1982 Cadillac Coupe DeVille DIESEL