Camino LS6

http://philadelphia.craigslist.org/cto/2385671996.html

Cold? 75 is perfection.

Interesting aspect of things I hadn't thought about. Thanks for posting this.

C&G group discount? Anyway, U-joints are in.

Nicely put. Results, results, and results. All that matters.

Gnats were horrible yesterday. I can't believe the change today: cool, breezy, no humidity. Nice!

I second that! Looks like Mass is getting pounded.

Well, this is on hold. Have to put U-joints in it - like tonight.

Got my AC wound up to screech, staying inside whenever possible. God I hate this weather!

So, in sum, there is no real world advantage to DOHC. No exclusive capability. No inherent technical adavantage. No reason to place the format above the cam-in-block arrangement.

So now you are saying that DOHC has lower emission levels? Got any stats to back that up? If so, then at least you've found one real advantage for what it's worth. Meeting emission standards hasn't really been too tough for most engines lately it seems to me. I'd like to hear more about how various engines do compare in this regard currently. Dwight?

Whenever the talk among car guys went to custom exhaust around here, there always seems to be someone who says "better go to Lanacaster County for that". I never have, but perhaps I should.

Answer this question first. If all you claim is really true then why do so many great MFG's and most of the top engineers all disagree? While you make a good argument I think I will have to side with where they are going under the conditions they have to face in the future. Keep in mind you appear to be behind too on you precepsion of a DOHC engine. When you voice concern over low end torque it sends a signal you have not kept up with what really is going on with the engine today. That kind of concern is no longer in play as is many other issues. Like price Ford seems to know how to make a low cost DOHC and still show profits. Also they are giving what people seek. Wise or not it is bet to serve the customer what he wants or they will find it else where. Times and buyers are changing. Much of the same arguments were made when companies went from valve in block to in head. Many Flat Head Ford guys used a similar arguemt. Manufacturers have each followed their own paths to DOHC (and GM has been there as well), but what they have done is not determinative of what GM should do. Arguably, GM has proven to be the most talented builder of OHV V8s. They have carried them further into the future than anyone else, and no one does it better. The sheer quantity of those building DOHC engines is not evidence of the superiority of that configuration. And evidence is what is required, anything else is supposition. My three questions remain valid and critical. No amount of opinion changes the fact that they have not been answered. My concerns about torque likewise remain until we have numbers and the shape of a curve to go by. However, you do me a disservice by intimating that my objections rest on that aspect of this. A cost/benefit analysis is where my objections lie as enumerated throughout this thread. When and if the answers to my three critical questions become affirmative, I am prepared to lay aside my concerns. But not before.

These are the questions that need to be asked about this: Does this engine dramatically increase performance? Does this engine dramatically increase fuel-efficiency? Will this engine positively affect the profitability of the Corvette? Today, the answer to all three questions really needs to be yes for this to make sense. Do any of you really think that is the case? It appears at this point not to be.

It is a shame how so many engineers and companies are spending Billions on these engines. Too bad these highly trained engineers don't have your facts it would save them all this money. Funny too how many companies leaders have approved business cases on how many DOHC engines. They too must have missed the facts to. I get the feeling they know something you may have missed somewhere? Yes, they know how it feels to get trounced by a pushrod Corvette. One that costs less, and delivers more, all while being more fuel-efficient.

This is actually a lucid look at the issue. I would call it all but certain that such an engine, if produced, would be primarily a Cadillac property. A Vette using it would be simply an experiment.

Has to be the same shop I've been hearing whispers about for years.

Decent price. I may need their contact info.

Now that's some good information! If not for the Tahoe, then for other projects. I hate dealing with exhaust so much that stainless is a real temptation.

Their catalog lists them for the Suburban, but not Tahoe.

I haven't - think they would have it?

GM makes great engines - and I'm certain that if they built a DOHC V8 that it would be a great DOHC V8. I just see no benefit, nor justification, for it. The technical advances apply to pushrod engines just like they do to DOHC engines. And, the myth of DOHC superiority has been soundly debunked here many times. So, I see it as a "why bother" idea. Producing a new powerplant with just on par power, at greater expense,with greater weight and complication just doesn't make much of a business case.

...cat-back exhaust systems for my 1995 Tahoe 2-door. I would like to find a dual-outlet system, and though I have seen these trucks with such systems, I can't seem to find them listed anywhere. I have seen systems like that listed for shortbed/regular cab pickups - I'm guessing that these will fit, no?

LSx engines are not "huge" physically, they are compact and lightweight. Corvette never has, and doesn't now, need to sell anywhere else to be profitable - which it is. It would be nice, yes, but not necessary. Ummm, not even close to true. Possible. If the case is to be made for such an engine, it won't rely on use in the Corvette to justify it. If such an engine finds its way into a Vette, I suspect it will not be there very long, nor pay for itself. It very well could be an expensive experiment without any positive return. In short, there is no need to do this.

Have to agree on your choice of design centers, although I don't care for the Riviera concept much.