Читать книгу How to Restore Your Corvette: 1963-1967 - Chris Petris - Страница 8
ОглавлениеLet me start with the “lingo” that the Corvette crowd uses so you are on the inside track. The 1963 to 1967 Corvettes are called “Midyears” and anyone engaged in the hobby immediately knows the Corvette generation we are talking about: the cars built during the middle years of the decade. Based on my conversations with well-versed Corvette historians, no one seems to know for sure who dubbed the ’63 to ’67s Midyears, but it stuck. I will be referring to the entire second-generation Corvettes as “Midyears” throughout the book.
“Solid axles” are the 1953 to 1962 Corvettes equipped with a conventional-style solid differential.
Because of their long, low, shark-like bodies, the 1968–1982 Corvettes have been nicknamed “sharks.”
This is a beautiful example of a Bloomington Gold Certified 1963 coupe. The washboards on the unique ’63 hood really set it apart. Many painstaking hours were put into this correct restoration. Is this the path you are interested in taking? This museum piece keeps the Corvette heritage alive. It is not very likely that this Coupe will be driven much, if at all.
Corvette fiberglass bodies have changed throughout their existence. The 1963–1967 bodies were heavier than the early solid-axle cars, not much, but just enough to take care of some inherent flex issues. There are no bolt-on panels except for the rear lower valance. The body assembly is comprised of numerous fiberglass panels bonded together. The front end consists of an upper surround that goes from the front bumper to the windshield frame. Lower side fenders are attached to the upper surround to complete the front end. The rear has the roof and deck panel with rear fenders. The front and rear fender split line meets the upper panels about an inch below the surround panel. Bonding strips are used to connect and reinforce the panels at the front fenders and rear areas. Factory-supplied Midyear body panels are press-molded fiberglass, meaning both the inner and outer surfaces are smooth.
The main body panels are bonded to the “birdcage,” as most Corvette restorers call the steel enclosure for the driver/passenger cockpit area. The windshield frame and door-pillar posts compose the front section of the birdcage. C-channels connect the front and rear sections. Rear pillar latch posts connect to the roof frame on coupes. Coupes have the added strength of the windshield frame connection to the roof frame.
Convertibles with hardtops have a smooth look that is timeless; the best of both worlds allowing you to drive your Corvette in just about any weather. The owner of this ’64 told me he has fun attending car shows within a 100- to 200-mile radius.
You need to familiarize yourself with the many changes that occurred in the short span of the Midyear’s existence, especially if you plan on aggressively driving the restored car such as driving a couple hundred miles to a major Corvette show or maybe even entering a Gymkhana track event.
The 1963–1964 model years have drum brakes, which work okay, but we are all spoiled now with disc brakes. Sliding behind the wheel of an original ’63 or ’64 after driving your late-model car can get you into trouble. The fading brakes can turn your stomach in knots during high-speed stops. All the pieces are readily available to convert to disc brakes at all four corners.
The 1965 Corvettes dropped front drums for four-piston-calipered disc brakes as standard equipment. You could also order rear disc brakes, if you were so inclined on the ’65s. Even with the rear drum brakes, the ’65 is much more drivable at highway speeds.
This is what an award-winning Midyear looks like from the bottom. The original raw fiberglass floors are spotless. This beautiful example of a ’66 convertible has been flawlessly maintained for many years.
The 1966 and 1967 model years had four-wheel disc brakes to counter the ever-increasing horsepower. Transmission options were plentiful and the minor mechanical annoyances of the first model years were fixed. These early Corvettes were on the cutting edge for their time, in spite of their idiosyncrasies. Mechanical fuel injection units available on the 1963 through 1965 Midyears had their issues. Many of the early fuelie units were removed in favor of carburetors, to eliminate the constant need for tuning and adjustments. Three-speed, fully-synchronized manual transmissions were standard. Manhandling a Midyear without any power accessories meant just that.
The point is, you have many things to consider when choosing the correct Midyear for you. Drive it, show it, or a combination of both can work depending on how comfortable you want to be on the road.
Another path you may take is finding a desirable Midyear to restore, then hit the show circuit attaining National Corvette Restorers Society (NCRS) status. Many of these projects are eventually sold as an investment, but market trends are hard to project, sometimes turning an investor car profit into a deep downward spiral.
These spring tags and shock absorber stickers were part of the assembly build. Every Midyear received multiple markings to denote what pieces should be installed. NCRS and Bloomington Gold Judges look for the correct placement of these stickers and correct finishes.
A team of NCRS judges checks out an original ’63 from all angles. The first order of business is to verify the VIN and trim tag under the glove box. It’s not a quick process, and many items are checked from front to back then scored on tally sheets. It takes a lot of stamina to have someone scrutinize every aspect of your vehicle. You are competing with yourself as to how well the restoration was done.
The judges are conferring on their findings on this 1967 Midyear convertible with “Stinger” hood. Marina Blue 427-ci convertibles, such as this one, are highly sought after. The knock-off look-alike wheels were available only in 1967. These wheels bolted on in the traditional fashion eliminating the possibility of loose wheels, which was commonplace with knock-offs. Expect to have some items removed as the judging takes place, such as the ignition shielding and air cleaner on the ground in front of the car.
These are the many considerations you should put into the equation before heading out to find your project.
What is the NCRS? The National Corvette Restorers Society has taken on the challenge of keeping Corvettes in their original state. The NCRS prides itself on preserving the history of the American sports car. Thankfully, many 1963 to 1967 Midyear Corvettes have been restored to off-the-assembly-line status and judged by NCRS to ensure authenticity. Each component, nut, bolt, and assembly is carefully inspected for correct fit and finish, which is great for preservation of the Corvette heritage for future Corvette owners.
Many Corvettes have been over-restored using many differing standards than off-the-assembly-line status. This is a concern to the NCRS because they want the fit and finish to look as it did when the factory assembled each Midyear. Restoring a Midyear to NCRS standards is in a class by itself. You need to consider every piece on the Midyear, and each one you purchase. Is it going to pass the judge’s inspection?
Bloomington Gold Certification is another highly recognized standard for the Corvette restorer to achieve. Bloomington Gold Certification was conceived to encourage Corvette owners to preserve or restore their cars to factory-authentic condition. Within their process to restore and preserve the Corvette’s heritage, they recognize the owner’s efforts. Achieving Gold status requires an off-the-assembly-line finished vehicle standard.
There is no competition among Corvettes at Bloomington Gold events. Any Corvette that meets the Bloomington Gold standard receives the award. Corvettes awarded Survivor status are “Worn in, but not worn out” as quoted from the Bloomington Gold Quick Guide. The ultimate award for a factory-original Corvette is the Benchmark. These Corvettes must also be able to pass a 40-mile road test. Neither the Benchmark nor Survivor categories pertain to our project, but they do play a part in how an original restoration should look.
So you say your ’63 convertible was in rough condition? This partial ’63 convertible was seen at a local Corvette show with a sale price of $6,900 with title. This gives you an idea of the great lengths Corvette restorers go to have their own Midyear. Restoring this for a first-time project really puts you to the test. I say spend a little more and get a Midyear in one piece.
Concerns you may run into are finding someone who understands all the correct original Corvette component finishes. This is an important part of Bloomington Gold and NCRS judging guidelines. General Motors used a number of different cadmium coatings on driveline components, requiring the help of specialty shops for proper plating. This all means more cost to do an NCRS or Bloomington Gold restoration. To find all the pertinent data for correct pieces you need to consult other publications.
Date codes are on almost every casting: engine blocks, transmissions, water pumps, fuel pumps, carburetors, and alternators for instance. These date codes are carefully scrutinized along with casting codes and part numbers during judging.
Finding the correct original GM fasteners is another time-consuming part of the restoration. General Motors had specific stampings on the heads of the screws and bolts that must be in place. Most of the major Corvette suppliers have many date-coded components available to help ease some of the anguish in locating the correct parts. Invariably there are a few pieces that cannot be found easily. You know what that means; more money due to limited supply.
The NCRS or Bloomington Gold path may be the way for you to go and is certainly worth investigating. They both have great websites that explain their heritages and missions. The wealth of information provided is worth the membership. These organizations have technical information, manuals, and judging guides that cover Corvettes from 1953 to 1996. All the manuals provide excellent, up-to-date information on part numbers, casting numbers, date codes, and detailed descriptions. We need to have those correct Corvettes out there to show our pride in the great accomplishments of so many people who made the Corvette a reality.
Restoring any Corvette to NCRS or Bloomington Gold standards means resale value may be higher than the typical Corvette. Keep in mind that the knowledgeable buyer carefully scrutinizes every component as if it were being judged for correct casting, date coding, and part numbers. Many things affect resale price, making it impossible to say with any certainty that certified NCRS or Bloomington Gold Midyears have better value. On the other hand there are many Corvette owners who want to customize and personalize their Corvette. The numbers-correct and the personalized crowd generally put up with each other, in spite of their differing opinions. It makes sense to enjoy both sides of this hobby.
We need to preserve the heritage, but also enjoy driving the Midyear Corvette. History shows that certifications and awards do help, but do not bank on those alone. It comes under the heading, “There is a seat for everyone’s backside, you just have to find the right backside for your seat.”
Chances are the ’63 split-window coupe and any ’67 Corvette coupe or convertible with excellent documentation costs the most upfront. There is usually a premium on the aforementioned cars due to their popularity. The ’63 split-window has legendary status, making it more costly. There are few people who restore a low-production-run 1967 427-ci convertible for use as an everyday driver. Likewise, the 1963 to 1965 Corvettes with mechanical fuel-injected 327-ci engines are rarely driven. The 1965 one-year-only big-block 396-ci Midyear is in the same category.
The pinnacle of power in the Midyears occurred in 1967 with the 435-hp Tri-Power engine, or so it may seem. General Motors built what many believe to be a very underrated option L88 427-ci engine with aluminum cylinder heads. Historians say early L88s had iron cylinder heads. The single Holley 4-barrel-equipped L88 was rated at 430 hp and could approach nearly 600 in the right tuner’s hands. With only 20 known L88 Midyears produced, they are the costliest to purchase. Many Corvette purists feel that no matter how rough or how few pieces you may have, fuel-injected and big-block cars must be put back together as original. This keeps their value in the stratosphere for the most part.
Assembly-line workers placed two red and one green slash frame markings to denote how many shims were required. Shims are used at the radiator core support for correct fiberglass front-end position.
Less desirable are the 1964 Corvettes with drum brakes all around. Low-horsepower ’63 to ’65s with minimal options are easier on the wallet in comparison to the big-blocks. General Motors produced few Midyears equipped with 3-speed manual transmissions; but a few of these command big dollars. Those equipped with Powerglide automatic transmission are also few in number, but are more desirable than those with 3-speed manual transmissions.
Purchasing any ’64 to ’65 Corvette can make sense if you are not hung up on the look of the ’63 coupe, ’66, or ’67. General Motors upped the low-horsepower version of the ’66 to 300, increasing its value over the earlier years. Something you need to consider is that the money saved on purchasing a less desirable Midyear can be more than consumed during the restoration phase. No matter how you look at it, you will be in a Midyear Corvette, and that is never a bad thing.
What makes a ’63 Corvette different from a ’64? The ’63 coupe has the unmistakable split rear window with “washboard” inserts in the hood. The 1964 brought about some cleaning up of the exterior. No more washboards on the hood, although the recesses for them remained. The ’65s and ’66s had smooth hoods with redesigned gills. The 1967 received a completely different looking gill treatment with functional airflow. Standard equipment back-up lights were added to the rear valance in 1967, as well. Big-block-equipped Midyears had hood bulges to accommodate the taller big-block engines.
Interior differences from year to year were minor. The ’63s had a turn signal switch mounted on the outside of the column with a cable operating it. The ’63 and ’64 instrument clusters have unique-looking gauges with recessed centers. The ’66 and ’67 had optional headrests available; must have been to keep your head on your shoulders when the 427-ci engine Midyears were drag raced. General Motors put an all-new parking brake lever in the middle of the car for 1967 that worked so much easier than the earlier Midyear under-dash release. Why is the ’67 Corvette possibly the most sought after? Like so many car lines, the last model year in a generation is best. The ’67 was the culmination of all the hard work for this generation.
Paint dots were placed on many components to signal that a procedure was completed on the assembly line, or possibly to let the assembler know that this particular steering box was ready for installation. This information is from various sources, and no one can definitively answer as to why they were used. However, you must have them if you want to be awarded.
What should you look for? The 1963 coupe or convertibles were available with air conditioning and leather seats (saddle was the only color available) for the first time. Signal-seeking radios dubbed the “Wonderbar” appeared in the ’63s. Larger metallic brake linings with finned brake drums were offered for 1963 and 1964. The 1964 brought knock-off wheels into the picture and leather seats in all colors. More goodies came about in ’65: side-mounted exhaust, goldwall tires, and telescopic columns with teakwood steering wheels. Shoulder harnesses and headrests were added to the option list in 1966. Back-up lamps became standard equipment in ’66s; the last year for knock-off wheels. The ’66s had a push-button AM/FM radio available for the first time.
Brake calipers with dots and more shock absorber stickers. We all know that these markings and paper stickers are often destroyed or ripped off during service. Major Corvette suppliers have the stickers and paint to reproduce the markings.
The 1967 Corvettes were all about race-related options, and there were plenty of engine and transmission possibilities. Bolt-on knock-off look-alike aluminum wheels were available with red-stripe tires. A speed-warning indicator was also offered on the ’67 to warn you that you were on the throttle. Most likely, the big-block ’67s kept the speed-warning indicator active all the time! Differential options were plentiful from 3.08:1 to 4.56:1 for those who wanted to visit the local race track.
Special performance equipment option Z06 was available in early 1963 and included a 36-gallon fuel tank and knock-off wheels. There were other mandatory options that had to be ordered with option Z06, including fuel injection, 4-speed transmission, and Positraction differential. Z06s got big, sintered metallic brake linings, finned brake drums, and vented backing plates. These Z06 brakes were not the same as the J65 offered as the metallic brake option; these were true race braking systems that took getting used to. Later, during the ’63 production run around January 1, the Z06 option was modified to include convertibles, but excluding the big tank.
Knock-off wheel availability for ’63 is questionable; there is no verification that any customer ever received them on a car. Rim porosity problems caused leakage concerns, which held up their availability until ’64. General Motors dropped the Z06 moniker in ’63, although the big tank Midyears could be ordered through 1967.
Midyear “tanker cars” as we call them today, are essentially road race coupes, plus the one convertible that was produced for 1963. Sure, there were some tankers that did not see race use or the standard equipment, but they are even more rare. Tankers are a rare find and very valuable, no matter what year you may find. With only two tanker ’67s made, you can imagine their values. Six figures is the going price for any one of these rare big tank road race examples.
Power steering, power brakes, and air conditioning were available in all the Midyears, with a few exceptions. General Motors mandated that engines equipped with solid lifter camshafts not have air conditioning, nor do Z06s, of course. General Motors added another Tri-Power carburetor engine rated at 400 hp with a hydraulic camshaft (and oval intake ports) to comply with A/C requirements. This meant you could have plenty of ponies and enjoy A/C in southern climates.
More shim slash markings here where there are no shims. Quanta Reproductions has kits available with all the stencils, crayons, and correct color paint for the ultimate restoration. Quanta Restorations has paint daubs and instructions on where and how to place these markings.
Transistorized ignitions were available in 1964 and were required with special high-performance engine packages. Hardtops, tinted glass, and other creature comforts made the Midyear at home on the track or cruising the highways.
Deleted equipment can sometimes equate to more value than highly optioned cruisers. General Motors gave you a credit for deleting the heater and defroster. Out of 117,966 Corvettes produced, only 312 had the heater/defroster delete package. You know what use these Corvettes were destined for. Finding any Midyear with the heater/defroster delete is a great find. On the other hand, a non-Positraction-equipped Midyear detracts from its value. Not many non-Positraction Midyears left the factory, but they are of no help on the bottom line at resale.
Missing original driveline components are a major concern if you plan on seeking any NCRS or Bloomington Gold certification. Finding the dated and casting coded pieces with correct part numbers can be a daunting task. Some Corvette suppliers specialize in providing correct-coded engines and transmissions. They have typically spent time locating and storing engine blocks and transmissions, waiting for the opportunity to sell one. You pay plenty for all those correct numbers and date codes, even if the components are not that rare. The supply is limited and they understand that. So will you, when it comes time to pay.
Stencils were used on the canister oil filters of the day. I found a blue oil pan gasket on this ’66. The gasket was cork for an original factory-built Midyear. At this stage, you need to decide if you want all of these beauty marks on your chassis or if you want to drive it. You can rest assured any water under this ’66 is unintended and discolors the paper tags.
Many Midyear pieces have been reproduced by now. The positive side is that every day, more and more parts are being reproduced. High sales volume pieces get top priority, so there will always be some difficult items left to find. Exterior stainless-steel trim around the doors, for example, is really tough to find. No one is reproducing the stainless-steel pieces and that could cost a bundle if they are missing.
There are some birdcage and windshield frame pieces available new, but not enough to build a complete assembly. If you find a severely rotted birdcage, you had better be able to do the required metal fabrication and welding. Remember: someone else is always trying to build a Midyear from pieces. They, too, may be on the hunt for what may seem to be insignificant parts, at the same time that you are looking for yours.
The RPO Z06 was an awesome factory-built race car for the time. The $1,293.35 option was a really big price to pay for a $4,250 base-price Corvette. Today, this Z06-optioned coupe is highly sought after, and the price tag reflects it. This particular Z06 never made it to the racetrack back in the day and has actually accrued more than 50,000 miles. That is a big deal if the original race-bred brakes are still in place. The brake shoes had to be good and hot before they were predictable.
Missing original seat frames can be tough to locate, especially good, restorable assemblies. Interior trim items around the rear window or windshield are made of “unobtainium.” The restoration business has coined the term “unobtainium” for pieces that are hard to find and are therefore just about priceless. Instrument cluster restoration is going to cost considerably more if gauges are broken or missing. If the original radio is missing, they are available, but expensive.
Hot cars are another thing to watch for. No, not stolen cars (although you should be aware of those also). I’m talking about toasty cars that have been on fire. Personally, I would rather restore a burned car than a severely wrecked car. Either way, tread lightly if you consider getting involved with any wrecked or burned Midyear. There are limits: for instance, a small underhood fire that destroys the hood or maybe some inner/outer fender damage is not so bad. If the firewall has been badly burned, I say, “Run!” These pieces require many hours of meticulous hand fabrication. This is extremely costly, and most likely the birdcage has heat damage also. Collision work is tough, and you need to be able to measure properly and then pull to square things up. This takes expensive equipment and expertise to make sure the job is done correctly.
My objective, as I mentioned earlier, is to find a Midyear intact with possibly only the drivetrain missing. I have the tools and resources to handle just about any project that comes into the shop. Major labor operations like lifting the body can be difficult at home. For example, restoring the rear suspension trailing arms requires special tools and preferably a sturdy bench to work on. The engine and transmission can be removed easily enough, then sent out for repair or restoration. Rebuilding an engine or transmission can be a major concern for someone doing a project at home. Tools are expensive, especially if you are only going to use them once.
Before you go out and look at the first Corvette, consider just how much of the project you can do yourself. It is easy to get caught up in the moment thinking, “That really should not be that tough to do.” Then you get home and realize just how hard it will be to complete your Corvette. Many unfinished projects are sold for just this reason. Lack of interest can stop even the most determined restorer when things go wrong.
This ultimate barn find has all documentation and 99 percent of the original pieces intact. This ’67 435-hp engine and close-ratio Muncie 4-speed require a complete restoration. This would be a great restoration project for someone starting out except for the price tag. Many hours of research are saved when the Midyear has all its pieces in the right place. The finished product commands high dollars, as do the parts and labor to restore it.
Some areas of a restoration require higher skill levels than others. Equipment and special tools play heavily into the equation; hard work sometimes just does not suffice. Engine restoration requires precision machinery to bring the components back to factory specifications. Transmissions require more specialized training than tools, making them easier for the first-time restorer to accomplish. Differentials that require a bearing and seal change require more experience than special tools. Changing a differential ring and pinion, on the other hand, requires special set-up tools. Send the engine out for machining and send the differential out if you plan on a ring-and-pinion change.
The bodywork and paint is a tough call (see Chapter 4). Paint and body shops usually do not like it when you bring in a car “ready for paint.” Painters do not like to paint cars that were at other professional body shops. They know that no matter what the outcome, they are responsible for what it looks like. If the paint looks bad due to poorly performed bodywork, no one will say “look at that atrocious bodywork.” The bad rap will be on the painter. You either need to find someone to paint after the bodywork is done, or do both.
The interior seems easy enough, and for the most part it is. The trick is knowing how and where each fastener is installed. The dash electrical systems for the Midyears are relatively simple, if you use new harnesses. The connectors are not fool-proof, so recording how things come apart plays heavily into the outcome here. By far the windows and doors can be the most perplexing.
My plan is to make you feel comfortable with each area of the restoration, whether you plan on attacking it yourself or not. Knowing what the finished product should look like is a powerful bargaining chip. The same goes for how all the systems should operate. The upside is that there are few special interior tools that need to be purchased; patience is the main tool to have.
Before you take the plunge, check with local experts and Corvette owners for reputable local shops. Take the time to visit the recommended shop and see what it looks like and the attitude of the workers. If you find someone you feel comfortable with, explain that you are looking for a Corvette to restore. Whether you plan on doing the bodywork/mechanical restoration yourself or not, shop owners can give you an idea of what costs are involved. This gives you an idea of what areas you should consider doing yourself. Many times the cost of the equipment or tools outweighs the cost of doing it yourself. At the very least, try asking two shops for information and some insight on their costs.
You should expect to pay them a reasonable fee to look over a potential project. This can save plenty of money in the long run, avoiding the “bad penny,” so to speak. If the relationship is good, it can be well worth the money spent having them consult on the project. No offense to the brother-in-law who spent the last 20 years working on Honda Civics, but there is a good chance he most likely does not have the expertise required. It takes years of experience to know the in and outs of any mechanical device and this is no different.
You can waste a lot of hard-earned money listening to the wrong person. Opinions are everywhere and certainly there are people who restore Corvettes as a hobby that are well-versed. This is who you need for help—as long as he really has hands-on experience. One last thought on the subject: Yes, there are people who tell you what you want to hear. Accepting their advice after others have cautioned you to stay away, is usually very costly!
