1969 Camaro Ss Pro Tour 4 Wheel Power Disc Brakes Hotchkis Sway Bars Sharp Car on 2040-cars

Auto blog

Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

10 of 18 midsize SUVs earn 'good' IIHS side impact safety rating

It's not terribly surprising that midsize SUVs earned better safety ratings than small SUVs in the latest side-impact tests performed by the Insurance Institute for Highway Safety (IIHS). Just how much better they scored, on the other hand, certainly raises an eyebrow. Ten out of 18 midsize SUVs earned the highest rating of 'good' in the stringent new test, altered for vehicles starting with the 2020 model year with a heavier barrier (4,200 pounds) that moves at a higher speed (37 miles per hour) and is fitted with a hard honeycomb frontal structure. By way of contrast, just one out of of 20 small SUVs earned a 'good' score.  SUVs that receiving 'good' scores were the Ford Explorer, Infiniti QX60, Lincoln Aviator, Mazda CX-9, Nissan Pathfinder, Subaru Ascent, Toyota Highlander, Volkswagen Atlas, Volkswagen Atlas Cross Sport and Volkswagen ID.4. For EV fans, it's worth noting the ID.4 was the only electric vehicle included in the test. The Buick Enclave and Chevrolet Traverse scraped away with 'acceptable' ratings while the Honda Passport, Honda Pilot, Hyundai Palisade, Jeep Wrangler 4-door, Kia Telluride and Nissan Murano were deemed merely 'marginal' in the tough new test. Only two models — the Mazda CX-9 and Volkswagen ID.4 — earned a "Good" rating in every test category.  Interestingly, the Jeep Wrangler would have scored a 'good' rating if it were equipped with side airbags for the rear seating positions. It would likely be an engineering challenge to equip its removable top and/or doors with airbags, but the lack of that safety feature allowed the head of the rear passenger dummy to hit the vertical support of the top. Otherwise, the Wrangler scored good ratings across the board. The new Ford Bronco, which makes more allowances for side-impact safety, has not yet been tested.  The popular Hyundai Palisade and Kia Telluride SUVs stand out in the test with 'poor' ratings for driver pelvis injuries. The Nissan Murano, a vehicle last redesigned for the 2015 model year, was the only vehicle tested that received a 'poor' rating for its structure and safety cage. Videos of the tests of 12 of these 18 SUVs can be found on the IIHS' YouTube page. Related video: Green Buick Chevrolet Ford Honda Hyundai Infiniti Jeep Kia Mazda Nissan Subaru Toyota Volkswagen Safety Crossover SUV IIHS Insurance Institute for Highway Safety

Junkyard Gem: 1986 Chevrolet Sprint Plus

General Motors sold second- and third-generation Suzuki Cultuses with Geo or Chevrolet Metro badging in the United States from 1989 through 2001 model years, and we've all seen plenty of those cars on the street over the years. The first-generation Cultus was sold here as well, with Chevrolet Sprint badges, and I've found a rare example of the Sprint five-door hatchback in a Northern California car graveyard. The Chevy Sprint first appeared on the West Coast as a 1985 model, then became available everywhere in the United States for the 1986 through 1988 model years (in Canada, it was sold as the Pontiac Firefly). It was available here as a hatchback with three or five doors; for 1986 only, the five-door was badged as the Sprint Plus. Soon enough, The General would be selling many more Asian-built cars with Detroit badges here. Isuzu I-Marks were sold as Chevrolet/Geo Spectrums starting in the 1986 model year, while Daewoo provided the Pontiac LeMans two years later. Under the hood, a 1.0-liter three-cylinder rated at 48 horsepower. The five-door Sprint cost $5,580 in 1986, which was $200 more than the three-door (those prices would be $15,445 and $14,891 in 2023 dollars). I've documented seven discarded Sprints prior to this one (including an extremely rare Turbo Sprint), and all of them were three-doors; we can assume that price was the most important factor for Sprint buyers. Gasoline prices were crashing hard during the middle 1980s, but memories of gas lines and odd-even-day fuel rationing from 1979 remained strong. What cars competed with the '86 Sprint on sticker price? Well, there was no way to undercut the hilariously affordable (and terrible) Yugo GV, which cost $3,990. The much bigger (but still pretty bad) Hyundai Excel listed at $4,995, while Toyota would sell you a sturdy (but zero-fun) Tercel starting at $5,448. Even the wretched Chevy Chevette — yes, it was still available in 1986 — cost $5,645. The original buyer of this car was willing to shell out an extra $395 to get an automatic instead of the base five-speed manual. That's about $1,093 in today's money. This car must have been slow. By the end, the doors were held shut with duct tape, but it still stayed alive until age 37. 53 miles per gallon on the highway! It does everything. The camels of the highway.