Drew Dowdell

Short lived GM Engines

68 posts in this topic

I'll get the easy ones out of the way first.

8-6-4

ShortStar

DOHC 3.2 V6 <Cadillac CTS>

4100 - "ran" for 4 years... not short enough in my opinion

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3800 Series III Supercharged 2004-2007

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There were various small (under 300 CID) versions of GM V8s that were short lived from the mid '70s-early '80s.

Chevy 262 (75-76)

Chevy 267 (79-82)

Pontiac: 265 (80-81)

Olds: 260 (75-82)

Edited by moltar
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Buick apparently had a 300 from '64-67 and a 340 from '66-67.

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The DOHC 3.4: 91-97

Vortec 8100: 01-06

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Vortec 8100: 01-06

The Vortec 8100 was a derivative of the old BBC (427, 454,etc), I think? So is it dead now? No more big blocks?

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4100 - "ran" for 4 years... not short enough in my opinion

But didn't the 4100 remain in production (notice how I avoided "ran") from 1982 through 1988?

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But didn't the 4100 remain in production (notice how I avoided "ran") from 1982 through 1988?

Ya, then became a 4.5 then later a 4.9 until '95.

Interesting factoids about the HT 4100 from Wikipedia:

"The HT4100 may not have been the most successful engine to sit under the hood of a Cadillac, (some people called it Hook and Tow), but customers were no more satisfied with the other two engines available at the time, the V8-6-4 and the Oldsmobile 5.9L Diesel. Kits were sold to retrofit the cars with Chevrolet engines (Buick and Oldsmobile V6s would also fit, but were much harder to install)."

Apparently, the engine block was porous and oil would leak through it...wierd.

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Buick 364 Nailhead - 57 - 59.

Buick 322 Nailhead - 53 - 56

Blocks, heads and hardparts do not mix between ANY of the nailhead lines due to width and displacement changes. Fun to find parts, let me tell you!

Oh, and the GNx Grand national 3.8 Turbo

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4.3 Turbo in the Syclone/Typhoon

Olds 215 Turbo v-8

Pontiac 265 and 301

Pontiac OHC six

Turbo 1.8/2.0 in the J car

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There was a Buick 4.1L V6 from 1980 to 1984, I think. There was also a 3.2L Buick V6 in the late 1970's and a 3.3L Chevrolet V6 in the same time frame. All were weak performers.

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But didn't the 4100 remain in production (notice how I avoided "ran") from 1982 through 1988?

my mistake, I thought it ended in '86 and became the 4.5 in '87. Two years longer than four too many.

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There was a 4.3 litre V6 diesel, transverse mounted in the A-bodies if I recall. Apparently they got amazing gas mileage but didn't suffer the same problems the 350d had. They just suffered from it's reputation.

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Ya, then became a 4.5 then later a 4.9 until '95.

Interesting factoids about the HT 4100 from Wikipedia:

"The HT4100 may not have been the most successful engine to sit under the hood of a Cadillac, (some people called it Hook and Tow), but customers were no more satisfied with the other two engines available at the time, the V8-6-4 and the Oldsmobile 5.9L Diesel. Kits were sold to retrofit the cars with Chevrolet engines (Buick and Oldsmobile V6s would also fit, but were much harder to install)."

Apparently, the engine block was porous and oil would leak through it...wierd.

Technically, with the exception of hearse and livery service, the 8-6-4 and 4100 were never sold at the same time.

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The DOHC 3.4: 91-97

Dammit, you beat me to it. What a scary engine, I only know one guy whos willing to even try to work on one. :lol:

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>>"Buick 364 Nailhead - 57 - 59"<<

364 ran thru '61.

Chevy Copper-Cooled 4 : '23

Chevy ZL-1 427 : '69

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Chevy also made a 3.8 v6 It was 229 Cubic inches instead of 231 like the Buick

Chevette Diesel engine(made by Isuzu)

6.0 Lq4 with Iron heads, I think it was only made in 99

2.3 Quad OHC from the 90's

3.1 Turbo

3.4 RWD in 4th Gen F-body

Chevy 409 61-65

427 Version of the 409

Pontiac Turbo 301

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technically all concept engines fit this. production... <10 for sure.

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Dammit, you beat me to it. What a scary engine, I only know one guy whos willing to even try to work on one. :lol:

I am another one of those guys. I actually like that engine. And it was a 215hp DOHC V6 in a time where V6s were hot if they even got close to 200hp.

Some of it's contemporaries:

Ford Mustang - 4.9 litre 215hp V8

BMW 5-series - 3.0 litre 215hp V8

Toyota Avalon - 3.0 litre 192hp V6

Ford Taurus SHO - 3.0 litre 220hp V6 - and this is where I get to point out to SHO fans that while the Cutlass supreme coupe has 5 less HP, it also weighs 200lbs less.

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It was a bad boy for it's time no doubt. Loved it, but if you still own one and can't work on it yourself, it could be a financial nightmare. We've had to resurrect a few that were almost destroyed by independent mechanics who shouldn't have touched it.

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It was a bad boy for it's time no doubt. Loved it, but if you still own one and can't work on it yourself, it could be a financial nightmare. We've had to resurrect a few that were almost destroyed by independent mechanics who shouldn't have touched it.

Luckily for me, I know enough about the engine that even if I can't work on it myself, I know what questions to ask of any would-be mechanic.

I did own one a while back.... and I probably will again.

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