Why the GA never got the 3.5 DOHC? [Archive] - GrandAmGT.com Forum

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GrandAmMe
06-16-2010, 10:48 PM
Sorry if there has been a similar post before but I am wondering why they never used the 3.5L out of the Intrigues in GA's.

Thanks!

Nick-G
06-16-2010, 10:53 PM
Because they used the 3400. :hay:

GrandAmMe
06-16-2010, 10:57 PM
Because they used the 3400. :hay:

Unfortunately. I'm just wondering why it was never an option...It seems like a good motor.

Since it was used in the Intrigue would a swap be possible?

mfuller
06-16-2010, 11:14 PM
Mostly because the 3.5 DOHC was a much more expensive motor to make.
Packaging wasn't as easy either; it was fairly wide due to the twin cams per cylinder head.
Anything's possible - GM made at least 1 Alero show car with the 3.5 DOHC.

realestdriver
06-17-2010, 02:04 AM
I agree, it would have made the grand am more expensive than it should have been. DOHC = $$$ @ the time. I think the GAGT 2000-Up performance was pretty good for the price.

[ChaosweaveR]
06-17-2010, 07:30 AM
GM was stubborn and figured there wouldn't be a demand for a more efficent V6 like that in the GA. Or at least, that's my take.

Either way, it sucks because you need to dump a bit of coin to make an LA1 fast.

Although, I would have loved to see the LY7 motor find it's way into the N-body.

Mac0083
06-17-2010, 12:33 PM
the 3.5 he's talking about, it's not a part of the 60* v6 family is it? is it a 90* ? i don't know anything about it and would like to read some. Thanks!

AaronGTR
06-17-2010, 05:09 PM
No, it was not part of the 60 degree engine family.


Three reasons they didn't use it. It was more expensive, it wasn't that great a motor, and it wasn't very reliable either. That's why they don't make it anymore.

Mac0083
06-17-2010, 05:12 PM
saw a brief thread on 60v6 saying that the 90* 3800 family was on its way out too. that's why they made a 3.9 vvt 60*
sounds reasonable.

[ChaosweaveR]
06-17-2010, 08:28 PM
saw a brief thread on 60v6 saying that the 90* 3800 family was on its way out too. that's why they made a 3.9 vvt 60*
sounds reasonable.

The L36/L26 is just as outdated as it's 60*V6 cousins, the last real hurrah for the pushrod 60*V6 was the LZ9 (3900 VVT) and it's destroked variation, LZ4 (3500 VVT) and the LX9. The LY7 motor paved the way for the now wonderful Direct Injection LLT DOHC V6. 312HP at it's crank, it's very impressive.

Mac0083
06-17-2010, 08:41 PM
researching the ly7, i saw this. from Wikipedia

On March 21, 2007 it was reported by AutoWeek that GM is planning to develop a 60-degree V12 based on this engine family to power the top version of Cadillac's upcoming flagship sedan. This Cadillac would essentially have two 3.6 L High Feature V6s attached crankshaft-to-crankshaft and would feature such high-end technologies as direct injection and cylinder deactivation. If so, the twin-engine would displace 7.2 liters, and produce approximately 600 hp (447 kW) and 540 lbft (732 Nm) of torque. Development of the engine was reportedly being conducted in Australia by Holden. [11] Fuel economy 2–4 km/liter (50l/100km) in city,5–7 km/liter (25l/100km).

In August, 2008, GM announced that development of the V12 had been canceled.

oh well

Malaclypse
06-17-2010, 09:19 PM
;1127894']The L36/L26 is just as outdated as it's 60*V6 cousins, the last real hurrah for the pushrod 60*V6 was the LZ9 (3900 VVT) and it's destroked variation, LZ4 (3500 VVT) and the LX9. The LY7 motor paved the way for the now wonderful Direct Injection LLT DOHC V6. 312HP at it's crank, it's very impressive.

You say "Wonderful"... I say pain in the ass.

Try replacing the timing chains on those motors in the Enclave/Acadia/Outlook/Traverse.... Drop Engine/trans + subframe out the bottom and work from there.

AaronGTR
06-18-2010, 04:03 PM
Well, you are talking about two different things. Packaging and power production. The 3400 is pretty easy to work on IMO. Especially compared to the 3800 in my GP, everything is much easier to get to. It's stock power output kinda sucks though. It's was only "ok" back in the late 90's. By today's standards it's weak. That's why a more modern engine with new technologies like direct injection that makes over 300hp would be "wonderful" in my opinion as well. :)

Malaclypse
06-18-2010, 06:51 PM
Its a solid motor, don't get me wrong... I've just come to loathe their exsistance because I've had to work on so damn many of them.

And yes, packaging makes all the difference. To do those chains on a RWD car is an EASY job... gravy in fact.

AaronGTR
06-19-2010, 02:10 PM
I believe it. Seems like a lot of stuff is easier in a RWD since the engine isn't sideways and crammed in with the trans and drive axles all in the front of the car.

I'm seriously considering something RWD with a clutch for my next car. :)

slw240sx
06-19-2010, 04:16 PM
I believe it. Seems like a lot of stuff is easier in a RWD since the engine isn't sideways and crammed in with the trans and drive axles all in the front of the car.

I'm seriously considering something RWD with a clutch for my next car. :)


G8 GXP still a Pontiac, but RWD 6 speed, and LSX motor, i am sad that when Pontiac finally made a decent performing and looking car GM kills the brand off. that was probably the best car in Gm's entire line up. other then the vette and cady's

young gun
06-19-2010, 08:29 PM
i'm obsessed with the G8's :) so sexy and packs a punch

[ChaosweaveR]
06-19-2010, 08:33 PM
i'm obsessed with the G8's :) so sexy and packs a punch

Then you'd love HSV's:
http://image.motortrend.com/f/auto-news/what-pontiac-should-have-been-holden-unveils-hsv-e-series-2-lineup/30239289+w750/holden-hsv-commodore-clubsport.jpg

Mac0083
06-19-2010, 09:28 PM
;1128104']Then you'd love HSV's:
http://image.motortrend.com/f/auto-news/what-pontiac-should-have-been-holden-unveils-hsv-e-series-2-lineup/30239289+w750/holden-hsv-commodore-clubsport.jpg

is it just me, or does that thing look like a g-8 with a hot body kit lol
pontiac's version looked a bit more clean and grown up, (aimed at the bmw crowd?) though i like the one from down-under better. but what's up with that spoiler?

[ChaosweaveR]
06-19-2010, 10:39 PM
In essance, WE have a body kitted Commodore. :lol2: the Aussie style is a lot more flashy, but damn, their cars have the go to back that up for sure.

Do a search on HSV Commodores and Monaros. Hell, VXR models too.

young gun
06-20-2010, 12:06 PM
its not bad but i still like G8's betterrr. Thats almost too flashy in some aspects