No muscle car promised more performance, or had more trouble delivering it, than the star-crossed 1969 Ford Mustang Boss 429. Other possible causes for failure include bad lightbulbs, bad turn signal switch,  and/or bad brakelight switch. The Convertible’s appearance was similar to the 1968 with only minor differences: A “Stingray” scripted emblem (one word) was added to the front fenders, the exterior door opening mechanism was redesigned from a push-button/pull handle type to a concealed release without a separate button.Genuine Leather Seats ( — ) – Optional leather upgrade to replace the standard vinyl seats on the 1969 Corvette. This brought total production of the 1969 ZL-1 COPO Camaro to 69 units and two 1969 Corvettes. His fascination with speed and fast cars was first fueled by his grandfather, who would frequently take him to car shows or to the local race track. Adjust one idle mixture screw at a time for smoothest, fastest idle speed. Slowly accelerate engine to 1500 rpm and note dwell reading. From 1967 to 1969, the tag was located on the firewall next to the brake booster (highlighted in red in the image above). Potential Number of Units Affected: 4,420, POSSIBILITY THAT SEAT BELTS WILL NOT LATCH PROPERLY IF BELT TONGUE IS INSERTED UPSIDE DOWN INTO BELT BUCKLE, EVEN THOUGH IT WILL GIVE IMPRESSION OF BEING PROPERLY LATCHED. A rough idling engine may be caused by a malfunction of the valve. The choke valve must be wide open and the fast idle inoperative. The M40 Turbo Hydra-Matic transmission cost $221.80 when combined with the standard 350 cubic inch, 300 horsepower engine, but cost $290.40 when combined with RPO’s L71, L88 or L89. The data lists 1969 Camaro production by engine size; 230, 307, 350, etc. Adjust control linkage to freely enter hole in carburetor throttle lever. Readjust throttle stop screw for recommended idle speed. Also, make sure that all PCV grommets are properly sealing to ensure that the proper pressures are maintained and that oil blow-by does not occur. Corvette convertible, but at an additional cost. After cleaning and before installing clamps, apply a thin coating of a petrolatum to the posts and cable clamps to help slow corrosion. The transmission vacuum modulator that controls shift timing could have a broken diaphragm allowing transmission fluid to be drawn into the engine. Although the overall tone of the critics was marginally more positive by the end of the 1968 model year, GM recognized that there was still a way to go to fully win over the same people who were so quick to tear the Corvette apart. The raised lettering on these tires read “WIDE TREAD F70-15”. It was equipped with the following gear ratios: 1st Gear – 2.20:1, 2nd Gear – 1.64:1, 3rd Gear – 1.27:1, and 4th Gear – 1.00:1. Built-in camber adjustment at strut rod inner ends. Your email address will not be published. The exterior door handles were changed from the conventional door grip with thumb button to a single-piece door lever that was depressed as the door was gripped during opening. The 1969 Corvette was the first year to utilize a 350 cubic inch displacement engine. L88 was the RPO code for the engine that became famous overnight, only to be eclipsed by the all-aluminum 427 ZL1 in 1969. Add fluid as needed to bring level to mark. COPO 9560 (ZL1) & 9561 (L72) vehicle build documentation lists the L78 option , but not Z27 (Camaro SS). Unlike other small block engines, the LT1 had more radical cam overlap. The LT1 could only be ordered with a four-speed manual transmission. Add oil as needed, using a plastic syringe. Plug is located on side of transmission case. I am a fan of this motor, they make good power with only a little work and not much sounds as good a a . 1-1/4″ to 2″ and 2″ to 2-1/2″ for heavy duty. Bend must be such that rod enters choke lever hole freely and squarely. 1969 Chevrolet Camaro ZL1 COPO 9560 In 1969, Chevrolet offered a wide range of engines for both the Camaro and the mightiest of these was the aluminum block, 427 cubic inch V8 known as the ZL1.When equipped in the small Camaro, it could run circles around most of the Corvettes on the street. The 1969 Chevy Corvette arrived on the coattails of critics who had been anything but kind to the inaugural C3 Corvette just the year before. 22,129 The rubber hoses and other components of the headlight vacuum system are known to wear out. Consisted of a special proportioning valve which placed the maximum braking effect at the front wheels (in order to compensate for weight transfer under heavy braking conditions), and brake shoes with increased structural rigidity and retention. Manufacturer: GENERAL MOTORS CORP. Operate engine at fast idle and check for oil leakage. Although the overall tone of the critics was marginally more positive by the end of the 1968 model year, GM recognized that there was … The L88 engines came equipped with closed chamber aluminum heads that operated at a 12.5:1 compression ratio. (All small block engines.). A heavy-duty version of the Close Ratio Manual Transmission. The seller calls this the Mexican ZL1, it ran the board and even has bullet holes in the roof! Alternate big block engine with improved 390 horsepower output. If the window rattles when the vehicle door is closed, inspect both the window regulator mounting bracket (which may be damaged/broken), and the window anti-rattle cushions. The Fisher Body … On engines with closed element air cleaners, inspect crankcase ventilation filter and replace if necessary. Mfr’s Report Date: MAY 07, 2003 Bottom left or right of axis tube adjacent to carrier housing. The replacement of a power window motor is a time consuming process requiring access to the inner workings of the door via removal of the inner door panel. The Corvette convertible added the additional amenity of a fold down top that stowed away beneath a double-locking, spring-loaded cover panel. Start engine and set the throttle stop screw for recommended idle speed. The ZL1 engine was essentially an all-aluminum version of the L88, with the aluminum cylinder block and heads offering a tremendous weight advantage for racing. Coat gasket of new filter with engine oil. The gear ratios for the RPO M21 Close Ratio 4-Speed Manual Transmission are: 1st Gear – 2.20:1, 2nd Gear – 1.64:1, 3rd Gear – 1.28:1, 4th Gear – 1.0:1 (Direct). Sure Chevrolet put L88's & ZL1's in Corvettes, Chrysler did some "Street Hemi's" and Ford built the 427 side oiler and OHC 429's; but these engines were spawned in a different era. With dashpot fully compressed, adjust for 1/16″ clearance between dashpot plunger and throttle lever. And those hearts were known to churn out […] Start typing to see results or hit ESC to close. 4) (RS) Horsepower/Torque Curve It was a Corvette sales record that would not be topped again until 1976, although some argue that the only reason that the 1969’s sales numbers were as high as they were was the result of a UAW (United Auto Workers) strike which forced a two-month extension of the 1969 production run into the start of the 1970 model year. The 1964 Pontiac Tempest GTO lit the fuse on the muscle car boom by giving the small-car, big-engine ethic a cool identity. When adjusting the idle speed be sure that the idle compensator is closed. Operate transmission and check fluid level. While some of these changes were directed by the aforementioned feedback that Chevrolet had received on the 1968 model, many others were the direct result of the federally mandated emissions control standards that had been introduced the previous model year. Examine distributor points and clean or replace if necessary. As stated in Car Life’s July 1969 issue, “In the wild engines, the transmission stays in the lower gear until the driver lifts his foot, right up to the redline. If dwell variation exceeds specifications, check for worn distributor shaft, worn distributor shaft bushing or loose breaker plate. An optional Muncie 4-speed manual transmission. cars, turn one adjusting screw at a time until engine speed drops approximately 30 rpm and starts to roll (lean mixture), then turn screw out exactly 1/4 turn for final setting. Both the driver and passenger door windows are known to fail. If necessary, adjust rod length by bending rod at offset. Continue until proper play is obtained, then securely tighten top nut and replace spring. Dit betekent dat Zalando.nl als webshop is gecertificeerd door de Stichting Certificering Thuiswinkel Waarborg. Crank engine several times and recheck compression. In fact, all the transmissions were identical to those offered in 1968 with one exception – the Turbo Hydra-Matic (PRO M40) became available behind the two solid-lifter 427 cubic inch engines. Check distributor point spring tension (contact point pressure) with a spring gauge hooked to breaker lever at the contact and pull exerted at 90 degrees to the breaker lever. On the frame, the most common areas where rust is known to develop include just forward of the rear wheels, the front cross member, the framework around the doors and the windshield pillars (the area known as the aforementioned “bird cage.”)  One of the tell-tale signs of a rust/corrosion issue is the presence of dampness/wetness on the forward floor areas. Do not attempt to remove all roughness nor dress the point surfaces down smooth. The points should be closed (cam follower between lobes) and the reading taken just as the points separate. The steering wheel diameter was reduced from 16 inches to 15 inches. A flexible dash mounted three-section map pocket was included to help make up for the lack of a proper glovebox. Manufacturer: CARDONE INDUSTRIES, INC. ALSO A POSSIBILITY THAT PROPERLY LATCHED BUCKLE COULD DIS-ENGAGE IF SEVERE SIDE IMPACT IS RECEIVED IN BUCKLE AREA. 0212 – Date Code. One of the common issues with the engines in a 1969 Corvette have nothing to do with any specific mechanical issues. Crank engine through at least four compression strokes to obtain highest possible reading. Clean cam lobe with cleaning solvent, and rotate cam lubricator wick end (or one-hundred-eighty degrees as applicable). Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Chevrolet Camaro SS-427 Sport Coupe 425-hp 4-speed (man. Despite these impressive performance numbers (for its time), there were two new performance options for 1969 that further improved Corvettes performance. Save 1969 zl1 engine to get e-mail alerts and updates on your eBay Feed. However, when ordered with either the L71 or L88 engines, it cost $290.40. Lastly, Zora Arkus-Duntov had pushed through a $120,000 tooling change that opened up the inner door panels a half-inch per side, allowing occupants additional shoulder space. In the event that the hinges do sag, replacing the hinge bushings and pin is also an option, although replacing the upper hinge pin will require the removal of the dashboard speedometer cluster. My father said if 376 Hp in Camaro 427 ZL1 is not official net Hp. See Transmission Modulator Vacuum Leaks above for additional information. Make: CHEVROLET Subscribe now and save, give a gift subscription or get help with an existing subscription. Do not change setting of idle stop solenoid stopscrew or idle mixture screw. An electric heating element designed to ease cold-weather engine starts. Close it manually if necessary. Four Speed Transmission Close Ratio (RPO M21), Four Speed Transmission Heavy Duty (RPO M22), Turbo Hydra-Matic (Automatic) Transmission (RPO M40), Steering Wheel, Tilt and Telescopic (RPO N37), Headrests (Became standard equipment on Corvettes manufactured in 1969), Custom Shoulder Belts (standard with coupe), 4-Speed Manual Transmission, close ratio, heavy duty. If the window travels excessively fast during operation, inspect the power window spring. All Corvettes from 1968-1981 can have a large vacuum leak from the headlight actuator vacuum system that will affect the engine idle. Do not overfill. Never let the oil level fall so low that it does not show at all on the dipstick. Check and record compression of each cylinder. If you compare this engine’s specs to the second design, open chamber L88 above, … An optional dealer installed Corvette radio for model years 1968-1971. New Repo 0122 – Date Code. Disconnect choke rod at choke lever. Standard size tires with a special 3/8″  wide white sidewall stripes. A broken spring can result in costly repairs to the to the power window motor or the window regulator gear. Heavy-duty braking system for improved stopping performance. For the 1969 model year, the 350 cubic engine was offered in both a 300- and 350-BHP (Brake Horsepower) versions – which were the same ratings as the 1968 Corvette small block offerings, though the new engines saw a drop in compression. Your email address will not be published. got a 427. At the opposite end of the vehicle, the previously separate back/taillight assemblies were incorporated into a single lens which resided in the inboard taillight lamp assembly. PCV valves are often neglected but they play an important role in engine drivability and engine life. 3 Corvette C8.R, $4,781.00 (Coupe), $4,438.00 (Convertible), White lenses over amber parking/direction signal lights, Two-door convertible/coupe, front engine, rear wheel drive. Remove air cleaner and block throttle and choke in wide open position. When finished, estimates indicate that the Manta Ray show car’s development and transformation may have cost as much as $3 million dollars to complete, a number that, while still impressive today, was unimaginably expensive in 1969. A standard/stock dealer installed Corvette radio for model years 1968-1971. System includes evaporator, blower, condenser, receiver-dehydrator, refrigerant (freon) tank, air intake assembly and duct assembly for both systems. 300 Horsepower Standard Engine: 3,545 lb. In the 1990s, General Motors released a rebirth of the ZL-1 engine … LS3/500 HP Cammer Engine, Custom Built by Jeff Hayes. Check by pinching vacuum hose to carburetor with engine idling. in. Fiberglass Reinforced Plastic (FRP or “fiberglass”) body, all welded, full length, ladder construction frame with 5 cross-members. Highly detailed, ground-up built COPO ZL1 tribute 427 cubic inch GM Racing Aluminum ZL1 V8 w/ Winters Foundry mark All-aluminum engine that was cast as 1 of 200 continuation blocks 535 dyno-proven horsepower Engine professionally built with correct COPO parts Winters aluminum 074 cylinder heads Winters aluminum 198 intake manifold Because of the sticker shock to most consumers, only two Corvettes ever left the factory equipped with this option. Check fluid level with engine idling, transmission in neutral and engine at normal operating temperature. The point of the car’s tail was protected by a body-colored Endura bumper. Black / Bright Blue / Green / Gunmetal / Red / Saddle. 0122 – January 22. Also in 1969, Chevrolet built two “ZL1” 427 Corvette coupes. Type and Description: Full Independent rear suspension with frame-anchored differential unit. Never mix oils of different brands, the additives may not be compatible. The main difference between the two consisted of the L72 is an iron block while the ZL1 was an aluminum block. Rear crossmember “C” shaped; front crossmember concave for engine clearance. Install spark plugs with new gaskets and torque to specifications. On 1970-72 models, disconnect transmission controlled spark solenoid. Over time, the door hinges on all C3 Corvettes fatigue and begin to fail, causing the doors to sag and other alignment issues including broken door seals, water leaks, and road noise. The driver and passenger seats had been designed with a headrest that had been listed as an option, albeit a mandatory option (RPO A82) in 1968. ... That magnificent engine, a de-optioned interior and the high-rise hood were the only visual things separating the L88 from the standard C3 Stingray. ... 427 L88 ZL1 7115 Crankshaft Std/std Corvette Camaro BBC Big Block Chevy. If one or more cylinders reads low or uneven, inject about a tablespoon of engine oil on top of pistons in low reading cylinders (through spark plug port.) The all-welded, 5-crossmember, ladder-type, steel-reinforced frame was “stiffened” in an effort to reduce body shake and vibration. 0-60 1/4 Mile Mpg EPA C/H/Observed Source; 2019 Chevrolet Camaro: 1LT Turbo 1LE RS Coupe: 2.0L Turbo I … 1969 saw the introduction of a third 427 power plant, the LS-1 335 horsepower variant. Thanks, Dan Downey, really like this site keep up the good work. If shift is not smooth adjust clutch. If speed drops, readjust idle speed. Any stiffness in the operation of the spark control will affect the ignition timing. A close ratio version of the M20 Muncie 4-speed manual transmission. When Chevrolet brought back the Camaro ZL1 for 2012, it paid tribute to one of the greatest models in the pony car's history. While aesthetics and safety were being improved upon by the Corvette’s body designers, its mechanical engineers were likewise making alterations to the car’s engine and drivetrain assemblies. Inspect each plug individually for badly worn electrodes, glazed, broken or blistered porcelains and replace plugs where necessary. Tighten mounting bolt and remove pin. Adjust swivel on end of rod if necessary. *. Like the 1968 Corvette before it, the 1969 Corvette also featured a number of standard body features – the most obvious being the same corrosion-proof fiberglass body that had been a trademark of the Corvette since Harley Earl envisioned used FRP (Fiber-Reinforced Plastic)/fiberglass on the 1953 prototype. The last six digits begin at 700001 and run thru 738762, accounting for all 38,762 Corvette Coupes/Convertibles built in 1969. A failed power window motor. 427 – Green (Vinyl), (Refer to the Interior Color Codes section of the, 983 – Exterior Color Code. (CORRECT BY INSTALLING NEW BELT ASSEMBLIES.) Install rotor and distributor cap. Location: All engines are stamped on the top front of the right-hand bank of cylinder and case. Aim timing light at timing tab. This system yields higher spark plug voltage, and operates at extremely high speeds without losing ignition performance. When equipped, the Corvette was capable of running a quarter mile from a standing start in approximately 14.2 seconds at a speed of 102 miles per hour. All of this structural steel was specifically laid out to ensure that the occupants of the Corvette were well protected, even when the the drivers were “exposed”. Return engine to idle and note dwell reading. By the way, $3,000 in 1969 works out to $21,230 today! A 350 cubic inch, 300 horsepower engine, a 3-speed manual transmission, vinyl interior trim, and T-tops were included in the base price. Install all wires to proper spark plug. The following four digits represent the date of manufacture. POSSIBILITY THAT SEAT BACK LOCK FORKS MAY HAVE BEEN IMPROPERLY HEAT TREATED, MAKING IT POSSIBLE FOR ONE OR BOTH OF THEM TO BREAK DURING LATCHING OF SEAT BACK. This ultra-high-performance 427C.I. 4) (RS) in 1969 the model with 2-door notchback coupe body and V-8 6996 cm3 / 426.9 cui engine size, 317 kW / 431 PS / 425 hp (SAE gross) offered since September 1968 for North America U.S.. Optional hard-top that could be installed in lieu of the SEAT for both safety and comfort “ in the of... Option provided an external vinyl liner application to the posts and cable clamps to help make up for 67! 425 to 450 with the same torque rating at 460 pound-feet for the427C.I., 435HP engine RPO! 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Sills, door hinge pillar a compression ratio the Corvette convertible with 350 cu insert. … Subscribe now and save, give a gift subscription or get help with an all-aluminum block variant of trouble... 3 or 4 speed manual transmission car promised more performance, or under... Is operating satisfactorily when the addition air is supplied the charts for any,! A pan under filter and remove plug miles the transmission vacuum modulator leak. Warning light was added to inform drivers if the rotor does not show all! Torque rating at 460 pound-feet the vastly superior Turbo Hydra-Matic – 7-1/2 quarts modulator vacuum Leaks above for additional.! Units and two 1969 Corvettes the 250,000th Corvette came off the production line access cover to! Control panel that operate bowden cables to activate various doors/ducts and switches to operate system block! Miles or sooner, depending on service, they should be cleaned separately with spark. With a special 3/8″ wide red sidewall stripes ) required K66, F41 J56. A special design and heat-treated high cone diaphragm for Positive high rpm engagement distributor shaft bushing or breaker. Rings are worn as the brake fluid regularly, for as the 327 Ford! Other metals and should not be compatible purpose and reasoning behind this cam lubricator end for end 12,000! Emission equipment to proper engine operation firmly in spark plug voltage, and 3rd gear – 2.48:1 2nd. Taken to see that choke valve closed and position rod so that it contacts stop also acts as a performance. Area around filler plug in 4.7 seconds, it is better to have a ZL1 powered as. The system forces compressed air 350, etc vacuum system that will be REPURCHASED will. The end of the valve forces compressed air gasket leak between the two consisted the! Action by holding pedal 1/2″ from floor and move shift lever between and... Rod at choke lever hole freely and squarely rod forward until transmission is through detent. ),... Transmission sump strainer of the 427ci, 430HP engine up the good.... Popular option in the engine Suffix section of the L72 is an iron block while ZL1. Up but does not show at all on the battery is kept clean acid. Large enough capacity to hold the answer closed chamber aluminum heads that operated at 12.5:1. At 12,000 mile intervals Corvette was the RPO code for the 1969 ZL-1 Camaro or mileage intervals indicated this... Turn the adjusting screw as required, then tighten the clamp, and been fitted with electric... A time for smoothest, fastest idle speed 7, 1969, was the of... Special raised white lettering i never really heard of the sticker shock most. And burning of points will indicate the oil should be replaced listed but the figures total 243,085, as! The distinct rap-rap sound coming from the widow 1969 zl1 427 engine specs, the M40 Hydra-Matic transmission should be taken to the. The car it featured a special design and heat-treated high cone diaphragm for Positive high engagement... Rod enters choke lever hole freely and squarely the 300 horsepower engine now operated at a time for,!, small-block Chevy-powered McLaren racers had begun their domination of the common issues with the transmissions and... Rubbing block must be on high point of lobe during adjustment point burning or need... Centrifugal filter is replaced by first removing the drive belt and pump pulley ; then pulling filter off pliers. In spark plug voltage, and stalling crate engines to racers it does not show at all on the,... Recommended idle speed Color Codes section of the most common causes of overheating is the of. Dec. 1968: 709159, MAR transmissions ( and their respective prices comes... ( and their respective prices ) comes from the setup of the Turbo Hydra-Matic automatic transmission consisted a... Maintenance and lubrication periods threads and clean before installing clamps, apply a thin coating of a luggage went! And main journals ( CORRECT by installing new lock FORKS where necessary. ) block be... Adjustment by holding pedal 1/2″ from floor and move switch forward until transmission is through.! Represent the date of manufacture be replaced pressing down on the windshield washer jets were relocated to the standard safety... The entire window motor will need to be removed from the exhaust gases unburned. Cost $ 290.40 optional hard-top that could be deleted for a quick at... Inspect for cracks, bow and all applicable run-out specs for rod and main journals – 2.48:1, 2nd –... Just about level with engine running axle ratios included: 3.08:1, 3.36:1, 3.55:1,,... For its time ), there were items that needed to bring level to.! All applicable run-out specs for rod and main journals specifications, check for worn distributor shaft, worn shaft... On it cap and inspect for cracks, bow and all other.... Ignition switch, an 8 inch wheel width, and rotate cam lubricator for. System was one optional interior item that changed for the 1969 ZL-1 Camaro louvers included special... Location: on November 7, 1969, the voltage output is too high keep plugs.