There are several approaches one can take when they set out to restomod a Corvette Sting Ray from the ground up. A person can begin with a perfect example of a factory original car or they can find a Sting Ray in need of so many repairs that the average person would choke at the expense needed to bring it back.
For Dr. Van Bingham, there was a specific plan. The choice was to find a clapped-out Corvette, and it had to be a 1967 Sting Ray coupe. Owning a C2 Corvette Sting Ray has been a lifelong dream for Van. Years ago, at 18 years old, he found a 1969 Corvette L88 for sale but didn’t have enough to buy it. Coincidently, another doctor Van knows—a specialist in his same field—bought that ’69 L88 and years later sold it for a reported $550,000.
How Van ended up owning a ’67 Corvette Sting Ray so far over the top in comparison to a garden-variety ’67 Sting Ray can best be attributed to “one thing leading to another.” Tray Walden at Street Shop referred Van to B Rod or Custom in Knoxville, Tennessee, and the project grew wings from there. The car selected was a $25,000 big-block ’67 coupe that turned out to be a lot rougher than first thought. Upon dismantling the ’67, B Rod’s Larry and PJ Burchett discovered the birdcage was rusted out far beyond usefulness. That set the wheels in motion to fabricate a new birdcage and ultimately created a new product for B Rod to offer Corvette owners.
The starting point for the project was to commission Eric of Eric Brockmeyer Design to pen a concept illustration for Van to approve. The chassis, as is for all Corvettes B Rod builds, is from Street Shop and is constructed from mandrel bent 4×2-inch steel tubing and based around C7 suspension components. The front coilovers are QA1 and a 1-inch sway bar capped with billet endlinks spans C7 spindles carrying 14-inch Z51 disc brakes. The rack-and-pinion power steering is a Flaming River unit made to Street Shop specs steered with an ididit Corvette-style column topped with a Billet Specialties steering wheel.
The C7 rear suspension is damped with shock absorbers and springs custom-made for Street Shop to use with its in-house machined lower billet mounts. Rear brakes are Z51 discs and body roll is controlled with custom 3/4-inch sway bar. Cast in aluminum alloy, the Super 8.8 differential limits wheelspin with a Truetrac unit and packs 3.50 gears. Custom Street Shop axles are made by the Driveshaft Shop. Fashioned after 1967 Corvette N89 cast-aluminum bolt-on wheels, the one-off Forgeline wheels measure 19×9 shod with Nitto Invo 245/40ZR19 tires in front and 20×12 mounted with 345/30ZR20 tires in the rear.
B Rod designates Van’s Sting Ray a “Wide Body” because wide wheels demand a very wide space. From the quarter-panels forward to the nose, four inches has been added to the car’s width. B Rod manufactures complete Corvette bodies and Wide Body C2 creations using press-molded fiberglass. Equipped with C7 suspension, the Street Shop chassis requires modified floors, hence a B Rod-modified floor and widened wheeltubs were utilized. B Rod purchased a new roof deck, taillight panel and hood surround from Lee Bumb Composites. The custom-made billet aluminum grille by Dan Baker’s Alumicraft rests beneath LED quad headlights by RestoMod Tech. Dan’s Polishing Shop did the chrome-plating work.
In Larry Burchett’s words, “The next step in the process was forming new front and rear floor molds and fabricating new widebody quarters, doors, fenders and front nose. Once the body plug was complete, the long hours and tedious work began. First, molds were built, then parts made and then these were assembled around and onto the reconstructed birdcage. With the body completed, the next decision was color. Discussion entailed every color of the rainbow when green was settled on. PJ Burchett mixed several spray-outs for Van to choose from. Axalta Hot Hues candy green was a starting point, then a multitude of pearls were blended into the mix to create Vanguard Green.
Under the 427 Corvette Stinger hood lies a 427-inch 2018 LS7 mated to a TCI 6x six-speed paddle-shifted automatic overdrive transmission. A Vintage Air Front Runner serpentine system drives a high-amp alternator charging an XS Power AGM battery and a Sanden compressor pumping R134a refrigerant to Vintage Air air-conditioning.
Street Shop stainless steel fuel lines feed an LS Classic twin throttle body fuel-injection system supplied from a Rock Valley gas tank fitted with an Aeromotive internal fuel pump. B Rod commissioned Dan Dittberner Engineering to develop the CAD data to make a breather top and fuel rails. In keeping with the look of a 427 Corvette Tri-power air cleaner, B Rod handformed a set of coil covers with the look of big-block Rat valve covers. The cooling system consists of a DeWitts radiator and DeWitts twin electric fan shroud assembly.
As illustrated by Eric Brockmeyer, the rich tan leather interior by Steve Holcomb’s Pro Auto Interiors relies on custom fiberglass bucket seat pods by B Rod for shape and Dynamat to suppress heat and road noise. The sound system features an Antique Auto head unit with Rockford Fosgate speakers and amplifiers. Instrumentation is by Classic Instruments. The completion of Van’s 1967 Corvette Sting Ray Wide Body by B Rod took three years to the month, making its 2019 SEMA debut a massive success. Vette
Original source; John Gilber- HotRod
The new Corvette has an eight-speed Tremec DCT. We weren’t crazy about it in the pre-production C8 we drove, but engineers tell us the final version will be better.
For the C8 Corvette, Chevrolet abandoned the traditional manual and torque-converter automatic for a new, eight-speed Tremec dual-clutch. And in our Performance Car of the Year testing, the gearbox was the weakest component in the pre-production C8 Stingray we had on hand. It’s part of why the Corvette didn’t win.
In automatic mode, the DCT dolled out nice, snappy shifts, but when using the paddles, it could be clumsy. Too often we found ourselves running into the rev limiter, or having downshifts denied after a paddle pull. But, the C8 we drove wasn’t a finished product. There’s been development work since we drove the car, and that work will continue for the foreseeable future. At a powertrain engineering seminar held by Chevy last week, we asked Glen Hoeflinn, controls program manager for the DCT, what will change from the car we drove.
“Maybe you get some humpy-bumpy shifts here, you get a little bit of that there. That all gets refined out,” Hoeflinn said. “It’s in final refinement, and then it’s in final checks and looking what we’re doing and making sure that it’s behaving exactly [how] we want.”
“That’s what we’ve done since the car that you had. Doing all that refinement and making sure it’s ready to go for everybody across the all the cars.”
A dual-clutch presents unique challenges, no matter what sort of car it’s in. “There’s a lot of pre-selection interaction that goes on in the background,” Hoeflinn said. “It’s the same choreography” between the engine and transmission, he added, but without the “luxury” of a torque converter, there’s a lot more programming work involved.
As you’d expect, the transmission has different automatic shift strategies for the various drive modes, which adapt in real time. The more aggressive, the more spirited you drive, the more aggressive the car’s going to respond,” Hoeflinn said. “As you start to relax, the car’s going to start to relax.”
The DCT uses latitudinal and longitudinal accelerometers, and looks at information like throttle position and steering angle to gauge how the car is being driven, and react accordingly. For example, in Track mode with the transmission set to automatic, the car will downshift aggressively when the driver is braking hard into a corner, and hold upshifts until corner exit.
The C8 has two manual modes. If you pull a paddle while in Drive, you get a temporary manual mode, which automatically times out, or can be exited sooner by holding the upshift paddle. In this mode, the car will automatically upshift at redline. If you press the M button in the center console, you get full manual mode. There’s no time out, and the car won’t upshift at redline.
There are two other neat tricks available for drivers to exploit. First, if you hold the downshift paddle, the DCT will serve up the lowest possible gear. Do that while braking, and the transmission will keep downshifting as engine speed allows. And second, pulling both paddles at the same time is equivalent to pushing in the clutch pedal on a manual car, which allows you to rev the C8’s new V-8 as much as you want.
In the C8, the paddles are directly wired to the transmission control module (TCM) for quicker response times. “In other applications, from the paddle, the wire will go to the body control module and then from the body control module back over to the transmission. You have obvious latency there,” Hoeflinn said.
“It could be 25, 30, 40 milliseconds from the time you pull, to the time that transmission actually got the message. When you wire them directly from the paddle straight to the TCM, we’re getting the message instantaneously.” This doesn’t mean the paddles will give you a downshift that over-revs the engine—the TCM prevents that—it just helps reduce delay.
One of the headline figures of the C8 Corvette is its incredible acceleration. We timed a pre-production Z51 Stingray as hitting 60 mph in 2.8 seconds and running the quarter-mile in 11.2 seconds at 122 mph. With the C8’s Performance Launch mode, the car will actually use the inertia of the engine coming down between revs to propel the car forward. Chevy calls these “Boosted Shifts,” and they’re only used with a Performance Launch. In any other mode, they make the car feel unsettled.
From a mechanical standpoint, this new Tremec transaxle isn’t a radical departure from other DCTs. There are concentric clutches and input shafts for the odd and even gears. The even gears and reverse live near the front of the transmission, while the odds are at the back. A limited slip-differential is integrated within the unit. Base Stingrays get a mechanical diff with a 4.89:1 final drive ratio while Z51-pack cars get an electronic LSD with a 5.17:1 ratio. The overall gear ratio spread of 8.8:1 is the same regardless of differential.
The packaging of the transaxle is such that there’s a common oil sump—filled with 11 liters of Pentosin FFL-4 fluid—for all components. A cooler mounted to the top of the transaxle assembly means there’s no need for additional hydraulic lines, while two filters keep things clean. An externally mounted pressure-side filter requires replacement every 20,000 miles, while the internal suction filter mounted to the sump is a lifetime part.
We asked about why the C8 team didn’t try to do a manual. Hoeflinn and the other engineers present gave us a similar answer to Corvette chief engineer Tadge Juechter, when we interviewed him before the car debuted. They’d need to develop a new manual just for the C8, and considering the stick-shift market is shrinking, it would be an expensive endeavor seemingly without much reward. There are packaging constraints with the Corvette’s central backbone tunnel, too, which would require a hole to accommodate the shifter and gear linkage, hurting structural rigidity. Juechter also said the pedalbox would be cramped with a clutch.
Our first experience with this DCT was less than positive, but this is a gearbox that shows a lot of promise. We look forward to driving the finished product.
Originally written by Chris Perkins; Road&Track
SEMA is the United Nations conference of all things aftermarket, and here’s some of the best stuff we spotted there.
1.Quintin Brothers Dodge Challenger
This 1000-hp Dodge Challenger went on a wild adventure after it arrived in Las Vegas. Vermont-based Quintin Brothers Auto & Performance had their truck and trailer stolen days before the show. Their custom Challenger was inside. Video surveillance helped track down the perp, but when Nevada state trooper Adam Whitmarsh tried to block the stolen Challenger into a parking space, the suspect rammed the Trooper’s Ford Explorer and escaped. After exiting the parking structure, the suspect smashed through a fence and drove the stolen Challenger across a nearby karting track—during a karting event. He eventually ditched the car and was later arrested. The Quintin Brothers and their Dodge Challenger arrived at the SEMA show wearing battle wounds from the wild chase.
2. Chevrolet E-10 Concept
It’s not an engine, it’s a motor. The Chevrolet E-10 concept is a 450-hp electrified C-10 pickup. Typically the only time a 1970s Chevy pickup is plugged into anything, it’s connected to a trickle charger. The E-10 has its batteries in the bed. The two electric motors seen here are called eCrate motors, a nod to the popular Chevy crate engines that can be found swapped into just about anything. GM claims the E-10 can complete a zero-to-60-mph run in about five seconds with a quarter-mile time in the high 13s. A Tesla P100D might be quicker, but it doesn’t look as cool.
3. Vibrant Performance Titanium Chair
Had Game of Thrones producers used Nissan Skylines or Toyota Supras instead of dragons as source material, this might be the Iron Throne. Vibrant Performance didn’t have to vanquish their enemies to build the thing, but they did use more than 50 pieces from their lineup of titanium exhaust products to construct what’s likely the most uncomfortable Adirondack chair on the porch. But it’s fun. Feeling exhausted? Have a seat.
4. Hyundai Veloster Grappler Concept
You’re unlikely to see a Hyundai Veloster on an off-road trail, let alone a dirt road, but this overland concept is out to change that. The Veloster Grappler concept is equipped with typical in-car camping accessories like a rear-hatch tent, solar panels, LED light bars, big all-terrain tires, and a roof basket to carry a spare. It’s still pretty low to the ground, and the tire clearance isn’t ideal for crawling, but it’s a concept. We’d pitch a tent with this thing.
5. Toyota Supra Wasabi Concept
Toyota’s Genuine Accessory Team cooked up a color for this concept that we hope will soon find its way onto a Camry. This Supra’s paint mimics wasabi paste and features white accents on the brake calipers, mirrors, stripes, and spoiler. The forged-aluminum wheels were designed at Toyota and have center caps with the original Toyota emblem. Ohlins coil-overs drop the Supra concept two inches. This was one of many Toyota Supras at the show.
6. AEV Jeep Gladiator
This Jeep Gladiator is equipped with all the proper get-dirty-quick gear. It has tough Bilstein dampers, a lifted suspension, and 37-inch tires. American Expedition Vehicles (AEV) is known for swapping big engines into off-road vehicles and then adding lift kits and other off-road accessories. They’re also responsible for the coolest parts of the Chevy Colorado ZR2 Bison. This year AEV brought three green machines to show off their latest accessories.
7. 1999 Honda Civic Si Super Street Build
Was this the car that sparked the movie The Fast and the Furious in 2001? It sure looks like it. Honda brought a handful of concepts to the show in celebration of its 60th year in North America, and what better way to do it by showcasing the Civic Si Super Street magazine modified for the Civic Si Challenge in 2000. If you collected buckets of Mattel die-cast cars as a kid (or shamelessly as adults, like us), this car might look familiar.
8. Nissan Frontier Desert Runner
The current-gen Nissan Frontier might be 16 years old, but this concept proves that Nissan knows what people at SEMA want in a truck: tons of suspension, awesome off-road tires, some type of light bar, and a 600-hp 5.8-liter V-8. In the meantime, we can only hope one of these ingredients get put to use on the upcoming Frontier refresh.
9. RTR Rambler Ford Ranger Concept
The RTR Rambler Ford Ranger does everything right without going too far. Ford chose 33-inch Nitto Ridge Grappler tires with custom RTR Tech 6 wheels, because they know anything bigger than that will be unnecessary in most cases. Three LED light bars are tastefully tucked into a custom front grille to complete an almost Ranger Raptor–like appearance. A two-inch suspension lift is installed as well as heavy-duty rock sliders, which act as both a step and as extra protection against rocky terrain. It’s a simple package done well, saving the flashy stuff like wild paint for the Insta-campers.
10. 1972 Honda N600
If it looks like this 1972 Honda N600 has a motorcycle engine under the hood, it’s because it does. This oddball is powered by a Honda VFR 800-cc V-4 motorcycle engine that puts power to the rear wheels. Although the car itself predates the era of high-revving VTECs, with the bike motor installed, this is likely the only N600 with a 12,000-rpm redline. This was one of several cars Honda showcased at the SEMA show.
11. Honda Civic Si Drift Car
This is a peek under the hood of a 926-hp Honda Civic Si. The engine is turned longitudinally and transforms a front-wheel-drive coupe into a rear-wheel-drive drift-spec machine. The work was done with help from Jeanneret Racing and Olson Kustom Works.
12. Chevrolet Silverado ZR2 Prototype
We saw this Chevrolet Silverado Desert race truck back in early October, when it competed in the Laughlin Desert Classic, a 17-mile race event in Nevada near the Arizona border. It was there for “engineering development,” but we still think it’s a preview of an upcoming Silverado Z
13. Honda Rally Passport
Honda R&D in Ohio built this rally-ready Honda Passport in their spare time. It has already survived a handful of rally competitions, finishing second in its class at the Southern Ohio Forest Rally. It has had typical safety additions like a roll cage, but other than that it’s unchanged except for tires, brake pads, wheels, and skid plates. Oh, there’s also the addition of a hand-operated hydraulic brake, for epic drift action.
14. 1968 Ford Bronco
There’s been plenty of buzz lately about the upcoming Ford Bronco, which is expected to debut in early 2020. A collaboration between Jay Leno and Ford, this Bronco has a supercharged 5.2-liter V-8 from the Ford Mustang Shelby GT500 and a five-speed manual transmission. The restoration maintained the simple beauty of original Bronco. The 18-inch steel wheels by Detroit Steel Wheels are a great combination of old style and modern needs. The Bronco’s Tonight Blue color would look great on a Mustang or F-150 Raptor.
15. Hyundai Veloster N Performance Concept
The Veloster N is quick, but this Veloster N Performance concept is quicker. Hyundai modified its hot hatch with carbon fiber for the front splitter, side skirts, rear diffuser, and spoiler while adding carbon fiber to each wheel’s center caps. The suspension is made up of Extreme Racing coil-overs and H&R coil springs with aluminum chassis bracing to add rigidity. Orange-accented interior bits stand out among more carbon-fiber pieces and an Alcantara dashboard.
16. SpeedKore Dodge Charger
Routed through the front fender of a 2019 Dodge Charger Pursuit is the exhaust from a 1525-hp Dodge Demon V-8. This project, put together by SpeedKore Performance Group and MagnaFlow, began as a police car. After fitting a carbon-fiber widebody kit, they turned it into something that would outrun police cars. The stock supercharged 6.2-liter V-8 was transformed into a twin-turbo engine and received an upgraded upper intake manifold designed to withstand the 26 psi of boost.
Written by: Austin Irwin, Car&Driver