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The Last GM Big-Block V-8 Rolls Off the Line
DesScorp writes "It's the end of an era in auto technology, as the very last big block V-8 engine from GM has rolled off the production line. The L18 engine was the last variant of an engine that had been in continuous production for over 50 years. The big blocks powered everything from the classic muscle cars of the '60s and '70s to heavy-duty trucks today. From the Buffalo News: 'When GM said last June the L18 would be eliminated by year's end, the announcement triggered another show of devotion to the product. Some customers ordered two years' worth of L18s, to put on the shelf for future use.' More than 5 million big blocks have been produced over the engine's history. The final big block engine to come off the line in Tonawanda, NY is headed for the GM Heritage Center in Sterling Heights, MI."
Pretty sure they are talking about things like boat manufacturers and water pump manufacturers. GM stopped using this engine in their trucks over 2 years ago, the production line was kept running to fill those outside customer orders. Since this beast needed 30% more displacement to produce 10% more torque and significantly LESS HP than the 6.2L V8 it's no surprise that GM stopped using it.
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Uh, this was the 8.1L (496 cu) engine that's being retired, it was a true big block. It was also a big hunk of cast iron with iron headers and hence heavy as all get out (734 lbs shipping weight vs 564 for the 6200).
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I think what they were saying is that pistons in a V configuration (e.g. V6, V8, V12 etc) are not in a line, hence they are not inline engines. An engine can either be a V or an inline, not both, much like a line can't be straight and curved at the same time.
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No not really, V-engines have a little added complexity, which may drag down reliability, but for all practical purposes there is no dramatic difference that makes a inline superior in peformance and reliability.
:)
A V allows you package more displacement in to smaller overall volume or to have less car to package around given in engine. Weight savings from a V engine boosts handling performance and economy. Yet an inline engine will be cheaper than a V, due to one, block, single manifolds, two camshafts instead of four.
Difference in power may come from firing order, and the path intake charge and exhaust gas take and a small reduction in friction in a Inline 4 or 6. Inline 6s can have a good cross flow set up for top end power when mounted longitudnally in a front engined car (short straight intake runners and 6 into 1 headers, make a good turbo platform. BMW, Nissan and Toyota have exploited this to great effect in racing and in road cars. Aftermarket Nissan Skyline motors with 6-1 turbo manifolds make whopping power.
In the end, V8s rose to greatnews because it was probably the best balance between a number of cylinders, dimensions, displacement etc. A four cylinder block is about as long as you want to go. Big displacement engines need a greater number of pistons to stop the piston speeds getting out of hand along with smoothness reasons. Eight cylinders is just right, for big power or a big engine.
A inline 6, and a 90 degree V12 and a boxer six are probably the three ideal engines, having perfect balance. The greatest engine of them all on the balance of all considerations, including, cost, complexity and packaging is the inline four. That's why V8s are made out of two of them:
American V8s most often really are just two inline four engines stuck together. Right down to the split-plane (cross-plane) crankshaft. Yes there are hack mechanics who have lopped off one bank of cylinders to make a inline four, it works. Unfortunatley cross-plane crankshafts have a lot of drawbacks including difficult to control vibration, unbalanced piston movement, poorer exhaust scavanging in certain exhaust configuartions and need for counterweights that add rotational inertia. Yes every American V8 you drove had a dirty kludge under the hood.
IMHO, a real V8 has a flat plane crankshaft. Truly the correct format for a V8, better firing order, more power, more balance and even better sound
After logging in slashdot still does not take you back to the page you were on. It's been that way for 20 years.
That happens with anything nowadays that they discontinue, or people THINK will be discontinued. See, there's this idea that's been driven into people's heads over the past 20 years or so that getting your hands on anything that's scarce will be an easy road to riches. The old "money for nothing" ploy.
Well, there's 'rare' and then there's 'in demand'.
The big block v-8 filled a niche. It's not a niche that can't be replaced, but it's a niche.
Ordering a '2 year supply' isn't stockpiling in a hope to get rich, it's having a sufficient supply that you can still manufacture your product, whether it be an emergency water pump system, U-Haul truck*, mobile home, generator, boat engine, or what not until you've re-engineered your product to take a different engine. Or some Chinese company licenses the design and starts production...
If it's even remotely rare, some greedy, bottom feeding, unethical scumbag will buy the last of them, then put them back on sale at an inflated price, demanding huge profits while adding zero value.
Uh.... Sure that 'scumbag' is adding value: He's adding the value of it being available. He has to pay for warehousing them in good condition, sales staff to sell them, advertising to let companies know the product is still available(in limited quantities). He has to take the risk that it'll never sell, and in many states, play a percentage tax on their retail value every year. It's expensive to keep stock around.
Not that some of what you mention doesn't happen, but from what I'm reading, GM fulfilled all orders in before a certain date, so the 'scum-suckers' at least can't rape the customers who planned ahead and stockpiled some of their own...
*Still surprised these aren't diesel.
I don't read AC A human right
Workers who now get 70% of their salary for not working... it is a small consolation, but it is something. Plus 3% of this plant's output is now closed off, NOT the whole plant.
European pumps dole out gas based on RON (research octane number), whereas in North American they use "pump octane", or "anti-knock index". AKI is calculated by averaging RON and MON (motor octane number). MON is determined experimentally on a special engine.
RON-MON is usually 6 to 10 in North America. This is called the sensitivity, S.
Given S=10, then,
RON-MON = 10
95 - MON = 10
95 - 10 = MON
MON = 85
and
95+85 / 2 = 90
So 95 octane in europe is around 90 octane in North America, maybe a little higher depending on S.
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