In line with the Chevrolet Bonanza, GMC offered the Royal Sierra appearance package, coupled with the Sierra Grande and High Sierra; in Canada, GMC offered several Sierra Wrangler exterior appearance packages (prior to the use of the name by Jeep).[60]. [76] As of today, such a recall would have been the third-largest ever (in terms of size). [2][7] For 1977, a 305 cubic-inch V8 was introduced for C-series half-ton trucks, expanding the engine range to six. [57] A Delco AM/FM audio sound system and an all-season climate control system were optional extras.[58]. The car, SUV, or truck towing capacity is the maximum amount of weight it can safely pull. Citadel of Besanon. For 1975, a 400 cubic-inch V8 was introduced as the largest engine option for K-series trucks, slotted above the 350;[2] in another change, catalytic converters were fitted to all trucks under 6000lbs GVWR. [76], GM also settled with the U.S. National Highway Traffic Safety Administration (NHTSA) in 1994 for the amount of $51 million to be used for safety programs. For a better experience, please enable JavaScript in your browser before proceeding. Four drive modes were offered: Two High, Four High, Neutral, and Four Low. For 1979, the front fascia underwent a minor facelift. The two can be different materials or diameters, and few cars have a perfect 50-50 weight balance between the two axles. Calculating it requires knowing several things about both your tow vehicle and the trailer you plan to tow. In 1986 Chevy K-30 had an new look. Upgrading a CUCV's max towing capacity? | SteelSoldiers My loaded civilian K20 Suburban 5.7 powered with 40 gal fuel weighed 5400. This towing capacity chart shows towing capacity by year, make and model so it's easy to find your vehicle's towing capacity. My other truck ran that type drive train. tranny, 3.73s and 35s. A properly equipped K-Series half-ton or three quarter-ton class pickup could tow up to 6,500lbs (3.25 tons) of braked trailer; a properly equipped K-Series one-ton class pickup could tow 500lbs more, up to 7,000lbs (3.5 tons) of braked trailer. [6][9][10] The interior of the C/K trucks underwent major functional changes, replacing the completely flat dashboard with a sedan-style design, centering controls and gauges closer to the driver.[8]. For 1989, all R/V pickup trucks (and related SUVs) underwent their most visible facelift since 1981. During the 1970s and early 1980s, Chevrolet marketed the Bonanza appearance package coupled with the Scottsdale (and later Silverado) trim, adding upgrades such as interior carpeting. I was just wondering roughly what the "safe . 1986 Chevrolet Chevy K30 Specs | It Still Runs -It's a "real" Jeep TBI 350/700/D300 60/14 bolt 40" Kevlars, 91 GMC V3500 CrewCab 5.9 CTD Nv4500 ,4:10 gears 18 mpg unloaded 14 mpg loaded 36' lowboy Gooseneck trailer. Because of Sevel being a subsidiary of Peugeot, the C10 was also available with a 70hp Indnor XD2 2,304cc diesel engine, perhaps best known in the US from the Peugeot 504. The same year, GM introduced the Chevrolet Kodiak/GMC TopKick. [79][80], During the 1992 report, a third-generation C/K caught fire in an 30 MPH side-impact test collision. [citation needed], As most recalls are issued by the manufacturer, government-issued recalls are fairly rare (only 8 had been issued at the time of the investigation[76]). As for 2022 Chevy Silverado 3500HD models, max towing with . Ive got a 90 R3500 350-465 14 and I assume 4.10s. Check out these changes that can increase towing capacity: The same vehicle can tow more with a Class III hitch than a Class II hitch. GM also offered owners $1000 coupons toward the purchase of a new truck with a trade-in of the old one.[88]. The actual weight of the entire Chevy Truck or SUV and its contents, including fuel and occupants. the measurement differs from GVWR, which is a measurement of how much a vehicle can carry. We add new items all of the time. 1999 chevrolet BLAZER Towing Capacity. Views enabled by these cameras are easily accessed by selecting the available Camera App on the touch-screen display. These penalties may not show much when unladen, but they can dramatically lower a vehicles towing capacity in towing. For 1992, the second-generation Blazer/Jimmy were replaced in a transition to the GMT400 architecture; the V-Jimmy was renamed the GMC Yukon (with the K5 Blazer later becoming the Tahoe). The third generation of the C/K series is a range of trucks that was manufactured by General Motors. For 1975, Chevrolet revised its C/K trim lines, with two making an appearance for the first time. The wheelbase length was extended to 117.5 in (2,985mm) for short wheelbase pickups, and 131.5 in (3,340mm) for long wheelbase pickups. As with the previous generation, the model line served as the basis for the Suburban and Blazer/Jimmy full-size SUVs and shared body commonality with GM medium-duty commercial trucks. GMC and Chevy Towing Cameras: . Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 500F 500F 1,000F 1,000F 1,500F 1,500F 2,000F 2,000F 2,500F 2,500F 3,000F 3,000F Now Now Dijon Dijon Mcon Mcon Nevers Nevers. Meanwhile, the max towing capacities . Maximum Towing Capacity For Every Truck - Kelley Blue Book Your tow vehicles GVWR and its towing capacity are different numbers. K-Series pickups also featured an off-road oriented design, with the transfer case bolted directly to the transmission and running gear tucked up as high as possible under the vehicle to reduce the chances of snagging vital components on obstacles, as well as to achieve a low silhouette and optimal ground clearance. you can buy a pallet of NP208's. The tow vehicle and trailer each have their own separate GVWR numbers, which, combined, make up the GCWR. A new Shift-on-the-move four-wheel drive system with two-speed dual range New Process 208 aluminium transfer case was introduced on K-Series pickups for the 1981 model year. [6][8] To further reduce noise, the mast antenna was removed and was embedded within the windshield glass. Chevrolet marketed its C/K pickups under four trim levels for 1973, carried over from the previous generation. 2005 Chevy Colorado, 3.5l inline 5, 4 speed auto 2001 Gmc sonoma 4.3l V6, 4 speed auto soon to have 1981-88 k30 11-16-2010, 05:04 AM #2: Number21. The optional wheelcovers were revised; a flatter design was introduced for both Chevrolet and GMC with black-painted accents. [60], The Custom was a basic vehicle with minimal exterior and interior trim, with the Custom Deluxe upgrading by adding color-keyed upholstery and interior trim and additional chrome trim. The first generation of the Suburban produced with four passenger doors, the seventh-generation Suburban shared many design elements with the C/K crew cab from the doors forward. 2dr K30 Silverado 4WD Bonus Extended Cab LB Drive Train Specs Seating Hauling Angling Gas Vehicle Weight Handling 2dr K30 4WD Standard Cab LB Drive Train Specs Seating Hauling Angling Gas Vehicle Weight Handling 2dr K30 Scottsdale 4WD Standard Cab LB Drive Train Specs Seating Hauling Angling Gas Vehicle Weight Handling Chevy still used fleetside to designate a regular bed and stepside for a flareside or curved bed. For 1981, the trucks underwent a mid-cycle revision. Sold alongside its successor, the R/V series was produced through the 1991 model year. The truck also featured on-demand switching, meaning the driver did not have to stop to switch to four-wheel drive. :smokin: It suits me just fine. Marketed by both the Chevrolet and GMC divisions, the C/K series encompassed a wide range of vehicles. Towing glossary Fifth-Wheel and Gooseneck Hitches These are designed for heavy trailering. While most commonly associated with pickup trucks, the model line also included chassis-cab trucks and medium-duty trucks and served as the basis for GM full-size SUVs. Four Low applied reduction gearing. Marketed primarily as pickup trucks, the C/K trucks were also offered as chassis cab vehicles. Marketed in 12-ton, 34-ton, and 1-ton (nominal) payload series, C/K pickup trucks were offered in two cab designs, three bed configurations, and three wheelbase lengths. Far larger than the Jeep Wagoneer (by nearly 3 feet), the Chevrolet Suburban competed largely against its GMC namesake following the 1975 discontinuation of the International Travelall. [citation needed] The federal report also stated that 50 MPH crash tests performed in the early 1980s "clearly demonstrated" the tanks were susceptible to puncturing. Settle in Bourgogne Franche Comt - Welcome to France There is a single number that automakers use to best estimate towing capacity. Heavy-duty towing equipment was available for both C and K-Series pickups, such as the Trailering Special package (included power steering, uprated battery, and uprated generator ), 7-pin trailer electrics connector, heavy-duty engine oil cooler, heavy-duty transmission oil cooler, and a weight distributing trailer hitch. In early 1987, GM began to phase the fourth-generation C/K as a 1988 model on the all-new GMT400 platform. Five positions were provided: High Loc, High, Neutral, Low, and Low Loc. :laughing: :shaking: I tow with a 83 crew cab 2wd and with my blazer on the trailer I rolled across the scale at 15200. '87k5 swapped in blown 2.8, th350, 208, 12" suspension lift, custom 5" body lift, ARB locked 10 bolts f/r w/ 2.73's, 49" irocks never rub = I'M HARDCORE!!! When consulting this towing capacity chart, remember that passenger weight exceeding 150 lbs., optional equipment, and additional cargo should be calculated and added into the equation. Sevel Argentina S.A. built the Chevrolet C10 in its Crdoba plant from 1985 to 1991. In recent years, they have responded with some unique and valuable technologies that help make towing safer. Capacity: 3 speed THM400 Total Fill 10.6 quarts. Since backing up is often the worst part of towing, with the trailer turning opposite the tow vehicle, this can drastically reduce your frustration. Neutral was provided for disengagement of both propeller shafts. 2002 chevrolet BLAZER Towing Capacity. RELATED: New Ford F-150 Systems Weigh Hauling and Towing Loads, Improve Handling. I like the looks when the oldies can run with the newer trucks. You can find similar charts almost always inside your vehicles owners manual. For the 1980 model year, full-time four-wheel drive was discontinued on K-Series, leaving only conventional four-wheel drive. Five different bed designs were offered, with 612 and 8-foot versions of the Chevrolet Fleetside (GMC Wideside) and Chevrolet Stepside (GMC Fenderside); to cover its extra set of rear tires, "Big Dooley" was a hybrid of the two designs, offered only in an 8-foot length. . If it had a stick it'd be even better. Soft touch materials were used throughout the passenger cabin, such as the dashboard, doors (arm rests), steering wheel, and shift levers. Started with a 74' K20 292/465/205,then bought a 79' K20 350/465/205,worked better,then he got a bigger trailer and he bought another 74' but it was a K30 CC 454/400/205. Plan your driving route for errands to make the most efficient use of your Quick Facts About Wheel Alignment The front and rear propeller shafts were locked at all times in Four High and Four Low. [89] Nearly all of those cases were settled out of court. These classifications don't refer to their respective curb weights, but rather to their payload capacity. Its possible to overload each one separately. [8] To visually integrate the cab with the pickup truck bed, a shoulder line wrapped from fender to fender around the vehicle (on Fleetside/Wideside beds). In addition GM was sued more than 100 times in lawsuits brought by individuals who were burned in GM trucks. After you trade in your existing vehicle, you can also get a free dealer price quote for a new one. As with GM cars, the hoodline of the C/K trucks was faired into the front fenders (replacing the clamshell design). While a wraparound windshield (from the Task Force trucks) was never under consideration, a more widely curved windshield (along with curved windshield glass) was added to the cab. The K30 GVW ranged from the base 8,600 pounds, 9,200 pounds (SRW), and 10,000 pounds (DRW). Chevrolet C/K (third generation) - Wikipedia While retaining the same fenders and hood from 1981 to 1988, the grille was redesigned for a nearly flush appearance, with much of the trim painted black. It would pull great with 33s and even got halfway decent mileage. I have pulled with it and it tows good but get's 5mpg when towning. more than their K counterparts. Base vehicle (curb) weight plus 150 lbs. The truck had a wheelbase 142 inches wide. I have pulled with it and it tows good but get's 5mpg when towning. So in the long run I spend more at the pump on long trips but spend way less than my friends in a year to haul my junk to the trails when you figure cost of diesel, truck payment, and maintence. I did order all the factory tranny/engine oil coolers when buying new trucks. I used to haul a camper and trailer with 6 horses in the back with no problem. You'd be wise to get several of the biggest tranny coolers you can get. In 1986 two power plants were available, the 350 cubic inch V-8 with 160 horsepower with 260 foot-pounds of torque and a four barrel carburetor, and the powerful 454 cubic inch V-8 had 230 horsepower with 360 foot-pounds of torque. And, of course, replacing the tires means buying six. Low-resistance tires that improve gas mileage might sound like a good investment, but they can reduce the amount of weight a vehicle can pull. I've got an '87 V3500, crew cab dually with the 454/400/205.. it gets about 8mpg loaded or towing, and only slighter more completely empty. . ZR2 rated at 6,000 pounds / 2,722 kilograms. Kelley Blue Book Values and pricing are based in part on transactions in your area. Who is towing with 73-87 chevy's? The tractor weighs 6600#, the gooseneck is 3800# (with winch and chains). 1980 Chevrolet C/K Series Pickup Trailer Hitch | etrailer.com Still, it doesnt give you a hard rule that works in every situation. Introduced as the successor for the 19671972 "Action Line" C/K trucks, the third generation C/K expanded its product range to a four-door crew cab pickup truck for the first time alongside the traditional two-door pickup and chassis cab trucks. I like the looks when the oldies can run with the newer trucks. We would add that, for safety reasons, its best to never come within 10% of that total. Most truck and SUV manufacturers maintain websites that can provide that information based on your vehicles VIN, such asRams Towing Calculatoror theToyota Vehicle Information Lookuptool. This truck we put together from a gutted hull and stripped frame. This is the only printed matter I can find now. Still, law enforcement can cite you for driving with an improperly secured load. The successor fourth-generation 19882001 C/K pickup trucks were designed with a single fuel tank located between the frame rails; the model line was designed well before the sidesaddle fuel tank configuration received media controversy. Along with dropping the two-headlight configuration, Chevrolet and GMC received revised grilles (including the turn signals behind them[2]). Needed a starter. The sidesaddle fuel tanks themselves were found to have a robust design highly resistant to crushing or crumpling from a side impact. [19] The 1978 model year was distinguished by a redesigned fuel-filler door (replacing the exposed fuel cap); woodgrain dash trim (for the Cheyenne and Silverado) was replaced by brushed-aluminum trim.[2][20]. With proper trailer brakes you should not have any problems with stopping. Protect your Chevrolet K30 4WD PICKUP in any driving condition with our specially formulated motor oils. In a major change, the removable hardtop design was discontinued (effectively making the model line a short-wheelbase version of the Suburban). While in use in GM cars since 1967, the Rounded-Line pickups were the first full-size trucks produced with an energy-absorbing collapsible steering column. The system could be manually shifted into High Loc which locked the center differential for a locked 50:50 torque split. goes anywhere, never been stuck. Neutral allowed for flat towing, or use of the power take off (PTO).[53]. For 1973, a Chevrolet 454 V8 was offered alongside 379 and 432 cubic-inch GMC V6s;[62] a very rare option was the DH478 "ToroFlow" 478 cubic-inch diesel V6. Chevy C10 vs C20 | Classic Truck Differences | CJ Pony Parts These charts will assist in determining how to best equip your Chevrolet vehicle for trailering. It is the weight limit for a trucks bed and cabin. They did well pulling and stopping loads for me they just rusted away or they would still be here pulling loads today.. [80][86], In April 1994, General Motors rejected a government request to issue a recall for all 1973-1987 C/K pickup trucks, claiming that it would involve over 6 million vehicles at a cost of over $1 billion. [63] For 1974, GMC engines were discontinued,[63] with the 454 replaced by 366 and 427 cubic-inch V8s (developed specifically for commercial use). After trailing the rest of the C/K series for nearly five years, one-ton crew cab pickups, the Suburban SUVs, and the K5 Blazer/V-Jimmy all adopted the GMT400 architecture. Your truck should have no problem pulling 17k even over 20k lbs, provided the hitch is up to the task and the trailer is properly loaded and strapped. Their ads help keep Steel Soldiers going. Optional Max Trailering Package (RPO code NHT) 2. While it might be technically possible to carry the load, youre likely to damage the tow vehicle, the trailer, or both and be unable to control the vehicle properly. Alongside the two-door regular cab, a four-door crew cab made its debut. Two High gave a 0:100 torque split, with Four High yielding a locked 50:50 torque split through direct synchronized gearing. K10 and K20 frames are identical (spring and axle combinations change the towing capacity for each) K30 frames are a bit thicker; K30 crew cabs are even thicker than standard K30 frames; C10 and C20 is rated approximately for 500 lbs. Payload capacity is the difference between a vehicle's curb weight and its weight . GVWR is the maximum amount of weight you could safely load onto your vehicle including the driver, passengers, and cargo. I have towed 14k with a half ton, braking is the only limiting factor worth noting. 2004 chevrolet BLAZER Towing Capacity. 1979 Chevrolet K30 Cheyenne - Backward Glances - MotorTrend At an all up trailer weight of about 10-11K#,he tongue weight would likely be 1500-1600#. It ran a rebuilt 350 and 4speed and 4.10s put ac on it and was good to go. Maximum towing capacity: 18,500 pounds (conventional or gooseneck) Base price: $39,500; Price as configured: $53,865; The 2022 Chevrolet Silverado . The Citadel of Besanon, designed in the 17th century by Vauban, is considered one of the most beautiful fortresses in France and one of Vauban's masterpieces. After becoming part of the R/V series in 1987, the seventh-generation Suburban remained in production through the 1991 model year. During the 1970s, the model range underwent several revisions to its powertrain line. You know you want to tow. Crew Cab. The hitch is 140#. Then youll need to know your tow vehicles curb weight the weight of the tow vehicle itself when filled with gas and all the other fluids it consumes while driving. [4][67][68], For 1976, outboard seats received 3-point (lap-and shoulder) safety belts with emergency locking retractors;[69] a center lap safety belt was used, with slack adjustment. The body had a sloped nose style. Just take the time to go thru things on the truck. He's been an expert guest discussing car shopping on cable news. The shift-on-the-move four-wheel drive system featured new automatic self locking hubs and synchronized direct high range planetary gearing, such that the truck could be shifted from two-wheel drive, to fully locked four-wheel drive at speeds of up to 25mph. [24] From model years 1973 to 1977, chestnut wood grain inserts were used on the dashboard and doors for further visual enhancement. The Weight Carrying Capacity is 3500 lbs, while the Tongue Weight is 350 lbs, and the Receiver Tube Opening Size is 1-1/4".. My Grandpa has since 74' when he bought his first Chevy. Trailer hitches are divided into five classes read on to find out more. This number will almost always show differences between the front and rear axles. After finding the charred wreckage of the tested GM pickups, GM investigators Failure Analysis Associates (FaAA, now Exponent) examined the fuel tanks of the vehicles; after X-ray examination, it was discovered that none of them had ruptured after collision. [32] The 1987 R/V models continued production at Janesville, St. Louis, and Flint; the new 1988 GMT400 trucks entered production December 8, 1986 at Pontiac East, Oshawa, and the new Fort Wayne plant.[33]. The best cars and best deals delivered to your inbox. Serving as the basis for full-size SUVs and heavier-duty pickup trucks, the R/V series ended production after the 1991 model year. In contrast, towing capacity is the weight limit for any trailer it can pull. each for the driver and a front passenger is used, so additional passengers, equipment and cargo weight reduce this rating. But many are costly, change the day-to-day performance of your towing vehicle, and can limit its appeal on the secondhand market when it comes time to sell. A properly equipped C-Series half-ton class pickup could tow up to 8,000lbs (4 tons) of braked trailer, while a properly equipped C-Series three quarter-ton or one-ton class pickup could tow up to 12,000lbs (6 tons) of braked trailer. I've used both a 78 model c30 cc and a 80 model c30cc dually to tow with. It is never safe to exceed your vehicles GVWR. The most powerful and efficient ratio for each individual vehicle is determined by the frequency and the usual weight being hauled. And that load must be balanced, keeping in mind both the horizontal force required to move the load and the vertical weight that load places on the hitch and the assembly that mounts it to the vehicles frame. The limiting factor in all this seems to be transmission heat. For 1976, engine displacement decals were removed from the grille; a voltage gauge replaced the ammeter in the instrument panel. [76] In response, the government clarified that vehicles sold in the United States must meet the National Traffic and Motor Vehicle Safety Act; along with meeting safety standards at the time of production, their production is also required to allow them to operate them safely under real conditions. [2] To denote the introduction of a 6.2L diesel V8, vehicles with the diesel engine received fender and tailgate badging denoting the diesel engine. *The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. 1996 Chevrolet/GMC K1500 Pickup (4WD) Tow Capacity For the first time since 1975, fender badging was revised, with scripted badging replaced by block lettering (a design that would last through 1987). The wood grain inserts were replaced by bright brushed aluminum inserts for model years 1978 to 1987. While the Chevrolet Cheyenne and GMC Sierra names were carried over from the previous generation, this generation marked the introduction of the Chevrolet Silverado and Chevrolet Scottsdale trims. 73-87 1-ton capacities - The 1947 - Present Chevrolet & GMC Truck 73-87ChevyTrucks.com offers select, high quality parts for sale that help fund this website and Forum. As the company began a multi-year transition between model lines, the Rounded Line generation was renamed from C/K to the Chevrolet/GMC R/V series to avoid model overlap. Coinciding with federal investigations into the model line, Dateline focused on allegations on the third-generation C/K trucks exploding in side-impact collisions due to the design of the fuel tanks. And, cars brake suddenly. If your GTW exceeds your vehicles towing capacity, you will not be able to move it safely. The truck had a wheelbase 142 inches wide. You dont need to know your vehicles dry weight in most towing calculations. Curb Weight is the total weight of a vehicle and all the fluids it requires to function (including a full tank of gas), but with no people or cargo inside it. Thanks. [3], The largely rectangular front fascia of the Rounded Line trucks (leading to the colloquial "Square-body" and "Box-body" nicknames from the media and public[3][6][7]) led to many departures from previous generations of C/K truck design. The third-generation C/K series was marketed by Chevrolet and GMC divisions. Chevrolet C/K - Wikipedia While seating up to 9 passengers, the model line was sized between the A-body Chevelle/Malibu and B-body Impala/Caprice station wagons in length. There is no single chart that will tell you how much your specific load will weigh. towing with 73-87 chevy's | Pirate 4x4 4dr K30 4WD Crew Cab LB Drive Train Specs Seating Hauling Angling Gas Vehicle Weight Handling 4dr K30 Scottsdale 4WD Crew Cab LB Drive Train Specs Seating Hauling Angling Gas Vehicle Weight Handling 4dr K30 Silverado 4WD Crew Cab LB Drive Train Specs Seating Hauling Angling Gas Vehicle Weight Handling 2dr K30 4WD Standard Cab LB Drive Train Specs While sharing the same stamping as before, the vertical bars were painted dark gray; chrome trim incorporated the turn signal lenses, giving chrome to nearly the entire front fascia. Manufacturers of trucks began a competition of sorts with one another. The Fora platform includes forum software by XenForo. Improving your engines cooling capacity with a bigger radiator can enable it to pull more weight without causing undue wear and tear to powertrain parts. I have towed 14k with a half ton, braking is the only limiting factor worth noting. RELATED: Best SUVs for Towing in 2021: Everything You Need to Know. [60] Intended for personal use, the Cheyenne and Cheyenne Super added carpeting, a headliner, and additional sound insulation; the Super offered the most interior trim on the door panels.[60]. Your tow vehicles dry weight is its weight when empty, without gasoline, oil, wiper fluid, or any other consumable. Looking over the . The next step is to understand the device that connects them. To accommodate the 1987 calendar-year introduction of the fourth-generation C/K for the 1988 model year, GM re-designated the third-generation C/K as the R/V series for 1987. The truck above was equipped with 4.10 gears. For 1973, General Motors introduced the seventh generation of the Suburban using the Rounded Line truck chassis. [37], Heavy-duty towing equipment was available for both C and K-Series pickups, such as the Trailering Special package (included power steering, uprated battery, and uprated generator), 7-pin trailer electrics connector, heavy-duty engine oil cooler, heavy-duty transmission oil cooler, and a weight distributing trailer hitch. High Country trim level max capacity . The most pulled with my m1008 was 50k of corn, but only at 30 mph. [5] While distinguished by its straight-lined and boxy appearance, GM named the third-generation C/K the "Rounded Line" series, succeeding the "Action Line" C/K trucks. Conventional four-wheel drive was still available with manual locking hubs. nothing but a bunch of pipe and cast off parts. Most likely, yes, depending on the weight of the trailer. As part of the body facelift, the 1981 C/K pickup trucks received new grilles and redesigned front bumpers; Chevrolet grilles were split in the middle by a silver/black bar, with GMC grilles divided into ten squares. While not recommending what you do, I can tell you that them old trucks are tough. [23], The Rounded Line trucks underwent a mid-cycle redesign for the 1981 model year. Hee holds a Bachelor of Arts from the University of California Berkeley and is a veteran of the United States Navy.