Sorry, I goofed. It ran 0-60 in 8.0 and ran the quarter in 15.8@ 90mph. That trap speed is high for that time, don't you think? Here is the link for all the stats. http://motortrend.com/roadtests/seda...jo/index6.html

Oh ya, since were talking about the STS i'll post specs on that too. That new Northstar can move but needs another gear to keep up with the BMW 545. It has a six speed auto. http://motortrend.com/roadtests/luxu...ts/index7.html

This is what I don't understand. How is the "potential" of the L67 so much better than the potential of the 3.6 VVT??? It is a lighter engine, with aluminum heads (which cool better than iron heads), it has 4 valve per cylinder, not 2. The 60* bottom end is naturally balanced. I could go on forever. The only reason the outdated technology of the L67 keeps up is the blower. You stick a power adder on a 3.6 and say good bye to the L67. I'm sorry, I'm an L67 enthusiest as much as anyone else here, but you have to realize that the only reason the L67 is so great besides reliability is the blower. The engine itself is really old technology and doesn't make a lot of power, when you stick the new technology on similar displacement engines, its just no comparison. And, from what I have read, the 3.6 VVT makes 255hp @ 6500rpm/ 252ft.lbs @ 3200rpm. That isn't that far off the L67, and it revs higher. The extra horsepower it has over the L67 basically makes up for the lack in torque, and it has a 5 speed auto with much better gearing then the L67 ever got, and it can run just fine on 87 octane.

Shawn

Shawn'* right -it'* like comparing apples to oranges.
That 3.6 would benefit ALOT more from a CAI than a L36, or even a L67. Even the exhaust and CAI will probably put that puppy well into L67 territory torque-wise -HP probably close to 280. Some cams, headers, CAI, full 3" exhaust and that thing would no doubt put a Y2K+ SSEi with the same mods (and a 3.25" pulley) somewhere behind it in the 1/4 (not by much,) but the gain from those mods would be better due to the 3.6'* ability to flow more and more air through the motor (not just before and after) as compared to the L67.

Ok... So I guess what I was trying to say is, best bang for your buck would be the L67 hands down.

Given enough money, any engine can be made better, but plain and simple fact is that the L67 due to it'* "old design" has MUCH more available and is a proven (over and over again) winner. Because it comes with a power adder doesn't make it a bad engine. I'm sure that if GM ends up using their new VVT engines for as long as the 3.8L has been around that there will be plenty of aftermarket for them, but I highly doubt that any automaker will ever again have a single engine last as long. Every other automaker has a different engine for just about every body style they have. GM has been one of the only ones that hasn't majorly revamped their engine lineup along with their body styles. The constant changes in engines makes it very hard for any aftermarket to ever appear outside of completely custom parts or regrinds of OEM parts, all of which costs $$$.

I guess I'm just a diehard push rod guy at heart. I had a 24v 3.5L in my old intrepid and I wasn't as impressed with it as I am of my L67. I'm really not all that impressed with my parents '97 STS compared to my SSEi. I even like the sound of the L67 over the N*. You can tell the difference between a push rod engine and SOHC/DOHC engine and I prefer the push rod.

There is no refuting the fact that a DOHC 4valve per cylinder engine should be more efficient. Throw in VVT and it should make for a very lively engine. I'm just saying that it'* not my cup of tea.

Well, GM need to make an L67 repalcement. An L76 with 340hp and 380 tq.. Bump up everything to 100

agreed something that will compete with the Hemi SRT-8

If they are going to do anything, they won't concentrate on the L67, and they will beef up the 3.6 with a turbo. That would make insane power.

The Cadillac STS might be just the thing to beat up the 300C. Maybe even the CTS-V XLVi or what ever those initials are. We are just focused on th eBonneville to do everthing I guess when GM DO have other cars in the class to mop that 300C. AM I right or wrong?

[/quote]
L67 > all v6 engines ( well except the GN turbo 3.8 )[/quote]

What about the Syclone/Typhoon 4.3?

Also, GM has the motors to keep up with the Hemi......they just don't use them where they should. The LS2 is only slightly larger than the Hemi (6.0L vs.5.7) but has much more power (400HP vs. 345) and is no where near being fully developed (next-gen Z06 being the example). With the 5.3 being in the new GP GXP, they could easily put the 6.0L version in (the motors are the same size externally) which makes 345/380 in its best form, which matches the Hemi in HP, and bests it in torque by 10.