Newton06

Just got my latest MotorTrend wherein some Porsche moron writes that the LS7 is hardly a world class engine like the 3.6 Porsche is. He goes on to cite that HP/displacement ratio is pitifully low for the LS7.

Do these guys really think that an engine's 'greatness' is simply it's HP/displacement ratio or the # of techno pieces involved?

Some of these guys really need to pull their head out of Porsche's derriere.

robvuk

This has been beaten to death here so many times that by now, only an idiot would judge an engine's greatness by hp/liter. All engines have a very similar volumetric efficiency. 3.5 liters at 14,000 rpm sucks down the same amount of air and fuel as 7 liters does at 7,000 rpm. There's no "magic" involved in that. They only represent a different approach to get the same amount of airflow. What one should be concerned with is how many POUNDS/hp. Or even EXTERNAL size/hp. Some of these high tech whiz bang multivalve, OHC engines are HUGE, especially when they require turbos to get the desired power.

Newton06

I couldn't agree more.

Try telling the Porschefiles that though.

NORTY

Larger displacement engines are generally more durable. (Everything else being equal.) They make the same power as small engines with less stress on the internals. I'll keep a big inch motor without toys thank you very much!

Vette5.5

Seem's like GM is looking at things a bit differently with the ZO-6. Check out 6.2 HP/LB-mid 11 ET's, 1.2G cornering, 20+ MPG and $70K pricetag. Nothing comes close. Porsche surely produces some excellent high HP/Litre powerplants at premium prices. The soon to be extinct $440K Carrera GT narrowly out performs the $70K Vette and consumes twice the fuel. It looks like advantage G.M. Some rag on the Vette's interior, but at a price well North of six figures, I have no problem with it.

glass slipper

Not to mention the low rpm torque allows gearing to keep the engine at very low RPM while cruising. And since friction increases exponentially with RPM, this allows it to get better MPG than a smaller engine. Of course everything else being equal.

Hartley

Not again....sigh. Why do the people care so much what Porsche guys say or do?

Hartley

Just for ***** and giggles I posted a similar title against Z06 owners on a well known P car forum. Will be interesting to see how many view or reply to it. For some reason I'm thinking it's not going to go anywhere as I think most P car owners are secure in their ***** size and won't care much. Should be an interesting experiment.

CMacZ06

Too much credit where none is do.....

TetraU

Maybe they don't even have penises.

AU N EGL

Porsche - poor design over engeneered to perfection.

jazzlove

By the way, that's "porschophiles"...

kelp

So then, why does the Z06 not have an overhead cam?

outnumbered

Very true and explained well.
Although those high revs sound sweet.

glass slipper

I'm guessing you missed this post above:

Given the attributes of the LS7, maybe the better question is why do any cars have overhead cams? And BTW, I own a ZR1 with the DOHC LT5, so I'm not biased, just impressed.

ReddyZ06

Tom,
I never heard it explained that way before.
Mike

PeterK

It actually would be "porschephiles"

I bet p-car owners can't help it ot have a smile or two when a corvette owners calls them porsche-files. I bet it would cause a rain of references to the trailers and gold chains.

TrackNoob

I don't know. I'll have to check my Porsche-files.

PeterK

Yes, and file it into your Porsche files.

TrackNoob

Only once I come in from the garage where I have been cleaning the gunk out of my Porsche file.