First mass-produced domestic DOHC 24V V-6?

[addyguy]

What was the first modern, mass-produced 24V, DOHC V-6 from a domestic manufacturer? I'm NOT talking customs, show cars, or one-offs....regular production.

I'm thinking it's either the 3.4 24V DOHC V-6 GM put in the Lumina and Monte Carlo Z-34's, or the Taurus SHO 24V V-6...am I right?

Cheers!

 

[itguy08]

The V6 SHO was a Yamaha engine. But it was the first, in '89.

My guess would be the Duratec 2.5 from the Contour...

 

[SLCraig]

I would have also guessed the 3.4 DOHC in the GM's.
The Chrysler 3.5 DOHC was not far behind in 1993.

 

[dparm]

Originally Posted By: itguy08
The V6 SHO was a Yamaha engine. But it was the first, in '89.

My guess would be the Duratec 2.5 from the Contour...


First year was 1995 for the Duratec 2.5 V6. The Ford Probe had the Mazda KL-DE 24-valve V6 before then...93?

 

[SteveSRT8]

The SHO was a very low volume unit, I'm not sure if it really qualifies under 'mass production'.

As an example Chrysler has made over a million 3.6 pentastars already.

 

[SLCraig]

Originally Posted By: dparm
Originally Posted By: itguy08
The V6 SHO was a Yamaha engine. But it was the first, in '89.

My guess would be the Duratec 2.5 from the Contour...


First year was 1995 for the Duratec 2.5 V6. The Ford Probe had the Mazda KL-DE 24-valve V6 before then...93?


The GM 3.4 was 1990 for the Lumina Z34.. It's gotta be one of the first ones for sure.

 

[A_Harman]

I would count the Taurus SHO engine as mass-production. Introduced in 1988?

Follow-up question: What was the first mass-produced V6 in the US?

 

[Hokiefyd]

Originally Posted By: SLCraig
I would have also guessed the 3.4 DOHC in the GM's.
The Chrysler 3.5 DOHC was not far behind in 1993.


The Chrysler 3.5L was SOHC if I recall correctly.

If the requirement is four camshafts and from an American manifacturer (not Yamaha for example), I think it was the GM 3.4L (the LQ1). It debuted in 1991 in GM's W-body cars, including the Monte Carlo, Cutlass, etc.

 

[1999nick]

Wasn't that first Yamaha SHO engine a V-8?

 

[A_Harman]

No. The follow-up 3.4L SHO engine was a V8. That engine lives on as the V8 in Volvo's SUV.

 

[Nick R]

Wait, the 3.4L in the chevy luminas was a DOHC engine? I thought it was the 3.4L OHV that was in the Venture/etc

 

[sasha]

Originally Posted By: Nick R
Wait, the 3.4L in the chevy luminas was a DOHC engine? I thought it was the 3.4L OHV that was in the Venture/etc
the DOHC was used in the
1991–1994 Chevrolet Lumina Z34 and the Euro 3.4 sedan
1991–1996 Oldsmobile Cutlass Supreme
1991–1996 Pontiac Grand Prix
1995–1997 Chevrolet Monte Carlo Z34
1995–1997 Chevrolet Lumina LS
1997 Chevrolet Lumina LTZ

 

[simple_gifts]

The SHO motor was a heck of an "out of the gate" appearance of DOHC V6s.

 

[NHGUY]

The GM engine was the "Twin Dual Cam" engine.
Almost as clumsy as "Quad OHC",or "Tech 4".

 

[Spazdog]

Originally Posted By: sasha
Originally Posted By: Nick R
Wait, the 3.4L in the chevy luminas was a DOHC engine? I thought it was the 3.4L OHV that was in the Venture/etc
the DOHC was used in the
1991–1994 Chevrolet Lumina Z34 and the Euro 3.4 sedan
1991–1996 Oldsmobile Cutlass Supreme
1991–1996 Pontiac Grand Prix
1995–1997 Chevrolet Monte Carlo Z34
1995–1997 Chevrolet Lumina LS
1997 Chevrolet Lumina LTZ


I can't believe it was availiable in the LS.

One would have to special order it in that model. I have never in my life seen a plastic 15" wheel covered, cloth bench front seat, column shift Lumina LS with a DOHC 3.4.

That would be some sleeper. Hey! you in the Maxima...you wanna' run 'em?

Even with all those models, it was still not a widely produced engine. The Z34 models are the only Luminas that only came with the DOHC 3.4 standard. The overwhelming majority of Lumina Euros were 3.1 powered. I think the Cutlass Supreme convertibles might have had the DOHC 3.4 on occasion.

 

[hemitom]

I would say the G.M 3.8 which if i remember came out early 60's

 

[440Magnum]

Originally Posted By: SLCraig
I would have also guessed the 3.4 DOHC in the GM's.
The Chrysler 3.5 DOHC was not far behind in 1993.


The Mopar 3.5 was a 24-valver, but it was a SOHC. GREAT engine, I owned one a 93 Vision TSi, and that engine ran like new when we sold the car with over 250,000 miles on it.

 

[Jarlaxle]

Originally Posted By: A_Harman
I would count the Taurus SHO engine as mass-production. Introduced in 1988?

Follow-up question: What was the first mass-produced V6 in the US?


That would be the 225 Buick odd-fire.

 

[Spazdog]

Originally Posted By: Jarlaxle
Originally Posted By: A_Harman
I would count the Taurus SHO engine as mass-production. Introduced in 1988?

Follow-up question: What was the first mass-produced V6 in the US?


That would be the 225 Buick odd-fire.


I think the GMC 305 V6 pre-dated it. But that wasn't a car engine. Just pickups and heavy trucks. It was mass-produced though.

 

[hattaresguy]

4.3? That engine is as old as it gets, LOL.