| 1993–1995 |
- New RWD platform (shared with the Firebird).
- SS (Super Sport) and Z28 performance trims reintroduced.
- Independent rear suspension (IRS) for improved handling.
|
- LT1
Mechanical Deep Dive: Engines, Drivetrains, and Common Issues in Chevrolet Camaro (1967–2002)
The Chevrolet Camaro’s mechanical legacy is defined by its blend of performance-oriented engineering and practical reliability, shaped by distinct generational priorities. Early models (1967–1981) emphasized raw power through small-block and big-block V8 configurations, while later iterations (1993–2002) balanced performance with modern drivetrain refinements. Engine choices ranged from the workhorse 350ci small-block to the high-revving 5.7L LS1, each tailored to specific market demands. Drivetrain configurations evolved from traditional rear-wheel drive (RWD) layouts to the controversial fifth-generation front-wheel drive (FWD) system, influencing handling dynamics and aftermarket adaptability. Common mechanical issues, from transmission shudder to electrical quirks, reflect the trade-offs between performance and longevity in these iconic muscle cars.
Iconic Engine Specifications and Reliability Characteristics
The Camaro’s engine lineup spans small-block, big-block, and early-generation LS-series powerplants, each with distinct compression ratios, power outputs, and reliability profiles. Small-block V8s dominated early models, while big-blocks delivered brute force in performance variants. The LS1 marked a shift toward modern engineering with improved reliability and efficiency.Small-Block V8 Engines (265–350ci)
The 350ci small-block (L31, L78, LT1) was the most ubiquitous Camaro engine, offering a balance of power and drivability. Key variants include:
- L31 (1970–1976): 350ci, 9.0:1 compression, 255–270 hp (SAE gross), cast-iron heads, hydraulic lifters. Known for durability but prone to head gasket failures due to aluminum heads and cast-iron blocks.
- L78 (1977–1981): 350ci, 8.5:1 compression, 180–200 hp (SAE net), emissions-hardened with smog pumps. Reliability improved but suffered from reduced power and timing chain stretch.
- LT1 (1992–1995): 350ci, 10.5:1 compression, 275 hp (SAE net), aluminum heads, roller cam, and coil-near-plug ignition. A high-revving, reliable engine with minimal common failures beyond valve cover gasket leaks.
Big-Block V8 Engines (396–454ci)
Big-blocks defined Camaro performance in the 1970s, with the 383ci (L78) and 454ci (LS6) as standout examples:
- 383ci (L78): 383ci, 8.5:1 compression, 210–245 hp (SAE gross), aluminum heads, hydraulic lifters. Prone to head gasket leaks and oil consumption due to high cylinder pressures.
- 454ci (LS6, 1970–1971): 454ci, 11.25:1 compression, 450 hp (SAE gross), forged internals, and high-flow cylinder heads. A legendary but temperamental engine requiring frequent maintenance, including valve adjustments and oil changes every 3,000 miles.
LS1 V8 Engine (1993–2002)
The 5.7L LS1 represented a departure from traditional Camaro engines, featuring:
- Displacement: 346ci (5.7L), 10.5:1 compression, 275–305 hp (SAE net).
- Key Innovations: Aluminum block and heads, coil-near-plug ignition, and a single-plane intake manifold. Reliability improved over small-blocks, though early LS1s suffered from oil pump failures (1993–1996) and valve spring breakage in high-RPM applications.
Compression Ratio Impact: Higher compression ratios (e.g., 10.5:1 in the LT1) improved power but required premium fuel (91+ octane) to avoid detonation. Big-blocks with ratios exceeding 10:1 often needed nitrous oxide or high-octane fuel for optimal performance.
Drivetrain Configurations: RWD vs. FWD in Fifth-Generation Camaro (1993–2002)
The fifth-generation Camaro introduced front-wheel drive (FWD) in 1993, a controversial shift from the traditional rear-wheel drive (RWD) layout. Below is a comparative analysis of torque handling, suspension tuning, and aftermarket support:
| Attribute | RWD (1967–1981, 1994–2002) | FWD (1993–1995) |
| Torque Handling | Superior weight distribution (60/40 front/rear bias). | Understeer-prone due to 55/45 front/rear weight bias. |
| Suspension Tuning | Independent front suspension (IFS) with adjustable camber. | MacPherson struts with limited adjustability. |
| Aftermarket Support | Extensive (coilovers, sway bars, RWD-specific parts). | Limited (FWD-specific parts, rare performance upgrades). |
| Transmission Options | 4-speed manual, 3-speed automatic, or T-56 6-speed (LT1). | 4-speed automatic (4L60E) or 5-speed manual (T-56). |
| Differential Types | Positraction (limited-slip), 8.5" or 10-bolt rear ends. | Open differentials only (no aftermarket LSD options). |
Key Observations:
- RWD Systems: Excelled in handling and aftermarket customization, with the LT1’s T-56 6-speed offering precise gear ratios for track use. Common drivetrain issues included transmission shudder (T56) and differential whine (8.5" rear ends).
- FWD Systems: Struggled with understeer and lacked aftermarket LSD support. The 4L60E automatic was prone to torque converter clutch failures and mechatronic solenoid issues.
Drivetrain Longevity: RWD models with proper maintenance (e.g., differential fluid changes every 30,000 miles) outlasted FWD counterparts, which suffered from premature suspension wear due to harsh compliance settings.
Common Mechanical Failures and Diagnostic Procedures
Older Camaros exhibit recurring mechanical issues tied to design eras and material choices. Below are structured diagnostic approaches for frequent failures:Transmission-Related Issues
Transmission shudder in the T56 6-speed (LT1 models) often stems from:
- Clutch plate wear or pressure plate failure.
- Input shaft bearing preload issues.
- Solenoid malfunction (electrical gremlin).
Diagnostic Steps:
1. Inspect for fluid leaks (pan gasket, cooler lines).
2. Check for delayed engagement (clutch or throw-out bearing).
3. Listen for whining under load (bearing failure).
4. Verify solenoid operation with a multimeter (12V resistance test).Cooling System Failures
Water pump leaks (common in 1970s–1980s models) typically occur due to:
- Impeller shaft seal degradation.
- Thermostat housing cracks.
Diagnostic Steps:
1. Monitor coolant level drops without visible external leaks.
2. Inspect the water pump weep hole for coolant seepage.
3. Check for overheating during idle (indicates internal blockage).Suspension Component Wear
Worn suspension bushings (control arm, sway bar links) cause:
- Clunking noises over bumps.
- Excessive body roll.
Diagnostic Steps:
1. Perform a bounce test (lift the car and release; excessive oscillation indicates weak springs or bushings).
2. Measure camber/caster angles (misalignment exacerbates wear).
3. Inspect bushings for cracks or separation from metal.
Electrical Gremlins: Troubleshooting Flowchart
Electrical issues in older Camaros often manifest as alternator whine, fuse panel quirks, or instrument cluster failures. Below is a text-based flowchart for systematic diagnosis:1
Restoration and Customization: Authenticity vs. Modernization in Chevrolet Camaro (1967–2002)
The Chevrolet Camaro’s legacy spans five generations, each embodying distinct design cues, engineering philosophies, and cultural relevance. Restoration and customization approaches reflect divergent priorities: preserving historical integrity through originality-focused methods or enhancing functionality and performance via modernization. This tension between authenticity and innovation defines the Camaro’s enduring appeal, influencing sourcing strategies, mechanical modifications, and aesthetic choices. Below, the philosophical divide between restoration philosophies is examined, followed by practical guidelines for sourcing reproduction parts, engine swaps, and the tradeoffs inherent in retaining original components versus upgrading for contemporary standards.
Originality-Focused Restoration vs. Modernized Customization Philosophies
Restoration philosophies for the Chevrolet Camaro can be broadly categorized into two approaches: originality-focused restoration and modernized customization, each with distinct objectives, ethical considerations, and market implications. Originality-focused restoration prioritizes historical accuracy, adhering to the manufacturer’s specifications for the model year. This approach emphasizes the use of New Old Stock (NOS) parts, period-correct paint codes, and factory-approved modifications. Enthusiasts and collectors often justify this philosophy on the grounds of preserving automotive heritage, ensuring the vehicle’s value as a time capsule, and maintaining compliance with concours or show standards. For example, a 1967 Camaro restored with a blacked-out interior, period-correct vinyl seats, and a matching-numbers engine aligns with the era’s aesthetic and mechanical standards, appealing to purists and historians. Conversely, modernized customization embraces contemporary technologies, performance enhancements, and aesthetic trends while retaining the Camaro’s silhouette or core identity. This approach often involves engine swaps (e.g., LS-series V8s in 4th-gen models), aftermarket suspension upgrades, or electronic instrumentation. Modernization advocates argue that such modifications improve safety, drivability, and longevity, particularly for daily drivers. A 1984 Camaro with a swapped LS3 engine, coilover suspension, and modern infotainment exemplifies this philosophy, blending heritage with 21st-century functionality. The choice between these philosophies often hinges on usage intent: collectors and show participants favor originality, while performance enthusiasts and daily drivers lean toward modernization. However, hybrid approaches—such as a restomod—merge both strategies, using modern components (e.g., fuel injection, electronic ignition) while maintaining exterior and interior period authenticity.
Checklist for Sourcing High-Quality Reproduction Parts
Sourcing authentic reproduction parts is critical for originality-focused restorations, as subpar components can compromise structural integrity, aesthetic coherence, and resale value. Below is a structured checklist for verifying part quality, authenticity, and supplier reliability, applicable to bumpers, emblems, interior trim, and mechanical components.Context:
Reproduction parts for the Chevrolet Camaro (1967–2002) must meet three criteria: dimensional accuracy, material authenticity, and finish quality. OEM specifications, original tooling, and historical documentation (e.g., factory service manuals, parts catalogs) serve as benchmarks. Trusted suppliers often collaborate with original equipment manufacturers (OEMs), archival research institutions, or specialized restoration firms to ensure fidelity. Verification Methods and Supplier Evaluation: -
Supplier Credentials and Reputation
- Prioritize suppliers with documented partnerships with General Motors (GM) or authorized restoration programs (e.g., GM Heritage Center, Classic Car Club of America).
- Verify customer reviews and case studies, particularly from recognized Camaro clubs (e.g., Camaro Chief’s Club, First Gen Camaro Owners Group).
- Example: The Camaro Chief’s Club Approved Vendors List or Speedhut’s GM Performance Parts for mechanical components.
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Material and Manufacturing Standards
- Metallic parts (bumpers, body panels): Confirm the use of original steel or aluminum alloys with matching grain patterns and thickness. Substandard reproductions may use thinner sheet metal or incorrect alloys, leading to warping or corrosion.
- Plastics and composites (interior trim, dash panels): Ensure urethane or ABS plastics are sourced from molded-to-spec tooling, not generic aftermarket alternatives. Example: Wilwood or Moroso for brake components, Custom Auto Styling (CAS) for interior trim.
- Paint and clearcoat: Require period-correct color codes (e.g., GM’s original paint charts) and multi-stage paint systems (primer, basecoat, clearcoat) to match factory finishes. Suppliers like DuPont Automotive or PPG offer archival color matching services.
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Dimensional Accuracy and Fitment
- Request CAD drawings or physical templates from the supplier to confirm exact measurements against original parts. Example: A 1969 Camaro front bumper must align with the fender flares and grille without gaps.
- For emblems and badging, ensure laser-engraved or die-stamped logos with correct font and proportions. Example: The "Camaro" script on a 1970 model should replicate the original’s serif typeface.
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Documentation and Traceability
- Demand certificates of authenticity (COA) or batch traceability records for critical components (e.g., engines, transmissions). Example: A rebuilt 350-ci small-block should include core charge documentation and dyno test results.
- For interior trim, verify stitching patterns, material composition (vinyl vs. cloth), and colorfastness against original specifications. Example: 1980s Camaro interior vinyl should match the grain texture and gloss level of factory-installed parts.
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Warranty and Return Policies
- Suppliers should offer minimum 1-year warranties on reproduction parts, with lifetime warranties for critical safety components (e.g., brake systems, suspension).
- Example: Wilwood Brakes provides a lifetime warranty on brake calipers and rotors if installed by a certified technician.
Red Flags in Low-Quality Parts:
- "Too good to be true" pricing (e.g., a $50 reproduction 1967 Camaro front bumper when OEM NOS parts cost $500+).
- Lack of supplier transparency (no contact information, vague manufacturing origins).
- Inconsistent fitment (gaps, misaligned seams, or improperly contoured panels).
- Non-archival materials (e.g., PVC-based bumpers instead of original steel, or incorrect paint formulations that yellow or crack prematurely).
Engine Swaps: Compatibility, Tuning, and Power-to-Weight Tradeoffs
Engine swaps represent one of the most transformative modifications in Camaro customization, balancing performance gains, drivability, and mechanical feasibility. Below are three common swap scenarios—LS-series V8 in 4th-gen models, 383 stroker in 1st-gen models, and LS1 in 2nd-gen Camaros—along with compatibility notes, tuning requirements, and power-to-weight considerations.Context:
Engine swaps in the Chevrolet Camaro must address mounting points, drivetrain compatibility, cooling demands, and weight distribution. The LS-series V8 (introduced in 1996) is a popular choice due to its high power output, durability, and aftermarket support, while big-block Chevy engines (e.g., 383 stroker) cater to enthusiasts seeking torque and classic muscle car character. Each swap presents unique challenges, from transmission pairing to exhaust system modifications. LS1 Swap into a 4th-Gen (1994–2002) Camaro -
Compatibility and Adaptations
- The LS1 (5.7L V8) fits into the 4th-gen Camaro’s engine bay with minimal modifications, as the LS1 shares the same 90-degree V-angle as the original LT1/LT4 engines.
- Key adaptations:
- LS1-specific intake manifold (requires LS1 heads or aftermarket manifolds like Edelbrock or Weiand).
- Upgraded cooling system (LS1 requires larger radiator and electric fans due to higher heat output).
- Exhaust headers (LS1 benefits from 4-into-1 or 4-into-2 headers for optimal flow).
- Transmission compatibility: The 4L60-E or 6L
Performance modifications for older Chevrolet Camaros span a spectrum from cost-effective bolt-ons to high-end forced induction and chassis tuning. The goal of these upgrades is to optimize power delivery, handling precision, and reliability while preserving the vehicle’s original character or enhancing it for modern performance demands. The tiered approach ensures progressive improvements, allowing enthusiasts to balance budget constraints with performance aspirations. Modifications must align with the Camaro’s generational strengths—whether the raw torque of a big-block V8, the agility of a Z28’s LS engine, or the drivability of later F-body platforms.
Performance modifications are categorized into three tiers based on cost, complexity, and impact. Each tier builds upon the previous, with cumulative gains in horsepower, torque, and handling. The selection process depends on the Camaro’s original configuration, intended use (street, track, or drag strip), and owner preferences for authenticity versus modernization.Budget Tier ($500–$3,000)
Focuses on high-value, low-cost upgrades that yield measurable improvements in throttle response, exhaust note, and minor handling refinements. These modifications are ideal for daily drivers or enthusiasts seeking incremental gains without significant mechanical overhaul. Mid-Tier ($3,000–$10,000)
Targeted at enthusiasts willing to invest in mid-level upgrades, this tier introduces forced induction, advanced suspension geometry, and braking systems. Modifications in this range often require professional installation and tuning to avoid reliability issues or drivability compromises. Extreme Tier ($10,000+)
Reserved for high-performance builds, this tier includes full forced induction systems, custom chassis components, and bespoke drivetrain solutions. Extreme modifications demand precision engineering, professional fabrication, and dyno tuning to achieve optimal results while mitigating stress on the Camaro’s original architecture.
Intake and Exhaust Systems
Intake and exhaust upgrades directly influence airflow efficiency, engine breathing, and exhaust scavenging. The choice between carbureted and electronic fuel injection (EFI) systems dictates the viable modifications, as does the Camaro’s intended application (street, track, or drag racing).Intake System Upgrades
The intake manifold and throttle body are critical components for airflow optimization. Carbureted Camaros benefit from high-flow manifolds (e.g., Holley, Edelbrock) designed for specific engine configurations, while EFI systems require compatible throttle bodies and intake tubes. Key considerations include:
- Cold Air Intake (CAI): Enhances air density by routing cooler air to the engine, improving volumetric efficiency.
- High-Flow Throttle Bodies: Required for EFI conversions or high-horsepower applications to accommodate increased airflow.
- Intake Manifold Porting: Custom machining of carbureted manifolds to reduce restrictions and improve cylinder-to-cylinder balance.
Exhaust System Upgrades
Exhaust modifications focus on reducing backpressure and improving exhaust gas velocity. The choice between headers and cat-back systems depends on the desired balance between power gains and exhaust note. - Headers: Increase scavenging by reducing restriction at the exhaust ports. Mandatory for high-horsepower builds to prevent detonation. Materials vary (stainless steel for durability, aluminized for heat resistance).
- Cat-Back Systems: Retain catalytic converters for emissions compliance (street legal) or delete them for track/drag applications. High-flow mufflers (e.g., Flowmaster, Borla) enhance exhaust tone without excessive power loss.
- Downpipes and Y-Pipes: Critical for maintaining exhaust gas velocity in forced induction applications. Custom fabrication may be required for optimal flow.
Dyno-Proven Gains
Horsepower gains from intake/exhaust upgrades are typically modest (5–15 HP) but contribute to throttle response and torque across the RPM band. Forced induction applications see greater gains (20–50+ HP) when combined with supporting modifications. Dyno testing confirms these improvements by comparing pre- and post-modification power curves, with particular attention to torque gains at lower RPMs.
Suspension Tuning for Handling Precision
Suspension upgrades enhance cornering grip, chassis stiffness, and responsiveness. The Camaro’s suspension architecture varies by generation, with later models (1994–2002) featuring independent rear suspension (IRS) and earlier models (1967–1981) relying on solid axles. Alignment specifications must be adjusted post-modification to maintain optimal tire contact patches.Key Suspension Components
- Sway Bars (Anti-Roll Bars): Reduce body roll during cornering. Polyurethane bushings improve responsiveness over rubber mounts. Upgrades include front and rear bars (e.g., KW, Energy Suspension) with adjustable rates.
- Coilovers: Replace factory springs and dampers for adjustable ride height and damping. Ideal for track use but require precise setup to avoid binding or poor ride quality.
- Control Arms and Bushings: Upgraded components (e.g., poly bushings, tubular arms) reduce flex and improve steering feel. Critical for solid-axle models to prevent axle tramp.
- Sway Bar Links and Panhard Rods: Enhance rear-end geometry and reduce squat/divot during acceleration/braking.
Alignment Specifications
Post-suspension modifications, alignment angles must be recalibrated to account for changes in camber, caster, and toe. Common adjustments include:
- Camber: Negative camber increases tire grip but accelerates wear. Typical range: -1° to -2° (front), -0.5° to -1° (rear for IRS models).
- Caster: Affects steering stability and toe-in/out at speed. Stock caster is often reduced for improved straight-line stability.
- Toe: Critical for minimizing tire scrub. Adjustments vary by tire width and suspension geometry.
Dyno and Track Validation
Suspension tuning is validated through lap times and chassis feedback rather than horsepower metrics. Professional alignment shops use 3D laser systems to ensure precision, while track testing confirms handling balance (understeer/oversteer characteristics).
Braking System Enhancements
Braking upgrades are essential for high-performance Camaros, particularly those with forced induction or aggressive power delivery. Stock braking systems are inadequate for sustained hard braking or track use, leading to fade and reduced stopping distances.Rotors and Calipers
- Drilled/Slotted Rotors: Improve heat dissipation and prevent glazing. Slots enhance bite in wet conditions but may reduce dry-weather performance if overused.
- Big-Brake Kits: Include larger rotors (e.g., 14" or 15" diameter) and four-piston calipers (e.g., Wilwood, Brembo) for increased clamping force. Common setups:
- Front: 14" x 1.5" rotors with four-piston calipers.
- Rear: 13" x 1.2" rotors with two-piston calipers (IRS models) or drum brake conversions for drag applications.
- Brake Proportioning Valve: Adjusts front/rear brake bias to prevent lockup. Stock valves are often replaced with adjustable units (e.g., Wilwood) for track use.
Brake Fluid and Cooling
- High-Temperature Brake Fluid: DOT 5.1 or ceramic-based fluids resist fade under extreme conditions.
- Brake Cooling Ducted Hoses: Redirect airflow to rotors to mitigate heat buildup during repeated stops.
Stopping Distance Calculations
Braking performance is quantified using deceleration rates (G-forces). A typical street Camaro with stock brakes achieves ~0.6–0.8G, while upgraded systems reach 1.0–1.2G. The formula for stopping distance is:
Stopping Distance (ft) = (Speed² × 0.0353) / (2 × Deceleration Rate × 32.2)
Example: A Camaro decelerating at 1.0G from 60 mph stops in ~120 feet; with 1.2G brakes, this reduces to ~100 feet.
Forced Induction Options: Supercharger vs. Turbocharger
Forced induction significantly increases horsepower but introduces complexity in tuning and reliability. Superchargers and turbochargers each offer distinct advantages for older Camaros, with selection dependent on engine size, budget, and intended use.
| Parameter |
Supercharger |
Turbocharger |
| Boost Levels |
6–12 psi (naturally aspirated limits). Higher boost requires engine reinforcement (e.g., forged internals, head studs). |
10–20 psi (depends on The older Chevrolet Camaro transcends its role as a mere automobile; it is a testament to the enduring allure of American muscle and the relentless pursuit of performance. From the thunderous roar of a big-block V8 in its prime to the precision handling of a modernized suspension, each generation offers a unique chapter in automotive history. Whether preserved in original glory or reimagined through cutting-edge modifications, the Camaro’s legacy endures as a symbol of craftsmanship, innovation, and the timeless thrill of the open road. For enthusiasts and restorers alike, the journey through its evolution is not just about maintaining a car—it’s about celebrating an era of automotive excellence.
FAQ
What are the key older models of the Chevrolet Camaro, and how do they differ?
The most notable older Camaro models include the first-gen (1967–1969), a muscle car with V8 power and classic styling; the second-gen (1970–1981), which evolved into a more refined performance car with the Z28 and SS trims; and the third-gen (1982–1992), known for the IROC-Z and its shift to front-wheel drive in 1982. Each generation reflects distinct eras of American automotive design and performance trends.
Which older Chevrolet Camaro models featured a V6 engine, and what were their specifications?
The third-generation Camaro (1982–1992) was the only older model to offer a V6, specifically the 2.8L Buick-built V6 (1982–1985) producing 115–125 hp, and later the 3.1L/3.4L V6 (1986–1992) with 105–140 hp. These engines were primarily used in base and low-end models, lacking the V8 power of higher trims like the Z28 or IROC-Z.
What were the older Chevy Camaro SS models known for, and which years stood out?
The SS (Super Sport) trim in older Camaros was a high-performance variant, most iconic in the first-gen (1967–1969) with a 396ci V8 (later 427ci) and the second-gen (1970–1981), where it featured the 350ci V8 (1970–1976) and later the 5.0L V8 (1978–1981). The 1970–1972 SS 396 and 1977–1981 SS 350/5.0L are particularly sought after for their balance of power and muscle-car charm.
Where can I find older Chevrolet Camaros for sale, and what should I look for when buying?
Older Camaros are sold on platforms like Bring a Trailer, Hemmings, Facebook Marketplace, and classic car auctions (e.g., Barrett-Jackson, Bonhams). Key considerations include service history, rust (especially in first-gen floor pans and second-gen wheel wells), engine condition (common issues: worn valvetrains, leaking gaskets), and title status. Always inspect for frame damage and verify VIN-matching parts if buying a restored example.
What engine options were available in the 1969 Chevrolet Camaro, and which were the most powerful?
The 1969 Camaro offered a range of engines, including the 295ci V8 (195 hp), 327ci V8 (255–275 hp), 350ci V8 (255–300 hp), 396ci V8 (325–375 hp), and the 427ci V8 (425–430 hp) in the SS 427 and Indy 427 (drag-race-only). The LS6 396 (375 hp) and LS7 427 (430 hp) were the most powerful street-legal options, prized for their muscle-car performance.
How have Chevrolet Camaro models changed by year, and which eras are most distinct?
The Camaro’s evolution spans six generations: 1967–1969 (first-gen, pure muscle car), 1970–1981 (second-gen, refined with the Z28 and SS), 1982–1992 (third-gen, FWD shift and IROC-Z), 1993–2002 (fourth-gen, RWD revival with LT1 V8), 2006–2015 (fifth-gen, modern SS with LS V8s), and 2016–present (sixth-gen, current LT/SS models). The 1967–1981 and 2006–2015 eras are most distinct for their iconic styling and performance philosophies. |
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