The 1969 Chevrolet Camaro Z/28 is the definitive version of one of the great homologation specials. Built so Chevrolet could compete in SCCA Trans-Am racing — a series with a 305 cubic inch displacement limit — it used the DZ302, a high-revving small-block created by combining a 327 block with a 283 crankshaft to land just under the ceiling. Rated at a deliberately conservative 290 hp, it was fitted exclusively to the first-generation Z/28 and to no other production Chevrolet. On track the formula was devastating: Chevrolet won back-to-back Trans-Am Manufacturers’ Championships in 1968 and 1969. In the showroom 1969 was the breakthrough year, with production exploding to 20,302 cars from just 602 in 1967 — outselling Ford’s Boss 302 by roughly twelve to one.
Table of Contents
- Overview and History
- Origins: Vince Piggins and Trans-Am
- The DZ302 Engine
- Trans-Am Success
- 1969 Styling
- Z/28 Equipment
- Transmission and Drivetrain
- Chassis, Suspension, and Brakes
- Performance
- Production and Identification
- Collectibility Today
- Key Features Summary
- Full Specifications Table
Overview and History
The Z/28 exists because of a racing series. The SCCA Trans-Am championship began in 1966 and captured genuine interest from both fans and the press in its first season — an impressive achievement for a brand-new series. Chevrolet wanted in, and the rules required that competing cars be homologated: a minimum number of road-going examples had to be built and sold.
The option code Z/28 was introduced in December 1966 for the 1967 model year, released on December 29, 1966, just in time to contest the 1967 Trans-Am season. Chevrolet had to build 1,000 showroom-ready cars to qualify. It was scarcely advertised to the general public, and most Camaro buyers were unaware it existed.
Interest grew steadily as the racing success accumulated. Production ran from just 602 cars in 1967 to 7,199 in 1968 and then exploded to 20,302 in 1969. The 1969 is therefore both the most numerous and, for many enthusiasts, the definitive first-generation Z/28 — the year the car’s reputation finally caught up with its ability.
Origins: Vince Piggins and Trans-Am
The driving force was Vince Piggins, one of the key figures behind Chevrolet’s high-performance programme. Watching the first Trans-Am season from the sidelines, Piggins moved quickly: before the first production 1967 Camaro had even been built at Norwood, he had already secured approval to develop a Trans-Am-ready version and had worked with the SCCA on homologation.
The central engineering problem was the series’ 305 cubic inch displacement limit. Chevrolet’s existing small-blocks did not fit: the 327 was too large and the 283 too small. The solution was elegant — combine the 327’s cylinder block with the 283’s crankshaft, producing a short-stroke engine of 302 cubic inches, comfortably under the limit and ideally configured for high-revving competition use.
The DZ302 Engine
The 302 first appeared in the 1967 Z/28 and was fitted exclusively to the first-generation Z/28 across its three-year run — it was never offered in any other Chevrolet model. For 1969 the engine was officially coded DZ302, and that designation is the one enthusiasts use today.
The engine’s character came from its short stroke. With a 4.00-inch bore and a 3.00-inch stroke, it revved with an eagerness no large-displacement engine could match, and it was built to exploit that: solid lifters, a high-lift camshaft, large-port heads, a high compression ratio of around 11.0:1, and a four-barrel carburetor on an aluminum intake. A cross-ram intake manifold with twin four-barrels was available over the counter for racing.
Chevrolet rated the DZ302 at 290 hp at 5,800 rpm with 290 lb-ft at 4,200 rpm. The figure was conservative by any reasonable assessment — real output was meaningfully higher, and the under-rating served both insurance and competition-classification purposes.
A persistent myth claims DZ302s found their way into Corvettes, Chevelles, or Novas from the factory. They did not. Similar 302 small-blocks were used in racing programmes and over-the-counter builds, but no documented production car outside the 1969 Z/28 left the factory with a DZ-coded 302 — a useful fact when evaluating claims about a car or a loose engine.
Trans-Am Success
The racing record justifies everything. Camaros won 10 of 13 Trans-Am races in 1968 and took the series again in 1969, delivering back-to-back Manufacturers’ Championships for Chevrolet.
That success is what transformed the Z/28 from an obscure option code into a car people actively sought. The contrast with the competition is striking: Ford had participated in Trans-Am since the first season and produced the Boss 302 for 1969 and 1970 as a replica of its race cars, but Z/28 production outnumbered Boss 302 sales by roughly twelve to one.
The Z/28 was, in the strict sense, the first Trans-Am street car — the model that established the template of selling a homologation special to the public, which Pontiac, Ford, and AMC all subsequently followed.
1969 Styling
The 1969 restyle is the most distinctive of the first generation. While the basic structure carried over, the sheet metal was substantially reworked with deeper body-side creases, squared-off wheel arch openings, and a more aggressive stance. Many enthusiasts consider it the best-looking first-generation Camaro, and it is certainly the most recognizable.
Z/28 identification came through the twin racing stripes over the hood and deck lid, Z/28 badging, and specific wheel and tire fitment. The optional cowl induction hood — with its rear-facing scoop drawing high-pressure air from the base of the windshield — is strongly associated with the car, as is the rear spoiler.
The RS appearance package with its hidden headlamps could be combined with the Z/28, producing an RS/Z28 that is particularly sought after.
Z/28 Equipment
The Z/28 was a performance package with a specific and purposeful content list:
- DZ302 V8 with solid lifters and high compression
- Four-speed manual transmission — mandatory; no automatic was offered
- Heavy-duty suspension with stiffer springs and revised damping
- Quick-ratio steering
- Front disc brakes
- Twin hood and deck lid racing stripes
- 15-inch wheels with wide tires
- Dual exhaust with a distinctive note
Options that frequently appear include the cowl induction hood, a rear spoiler, a Positraction rear axle, and the RS package. Air conditioning was not available — the engine’s character and cooling requirements ruled it out.
Transmission and Drivetrain
A four-speed manual was mandatory. Unlike the SS, which could be ordered with Powerglide, the Z/28 was never offered with an automatic transmission in first-generation form. This was deliberate: the engine’s high-revving character and narrow torque band demanded a manual.
That changed with the second generation. For 1970 the Z/28 moved to the 350 cu in LT-1, a Corvette-derived engine with greater torque and a less radical camshaft, which allowed the Turbo Hydra-Matic 400 automatic to be offered as an option for the first time — a clear indication of how much more highly strung the 302 had been.
Positraction limited-slip was available, with a range of axle ratios. Rear-wheel drive with a leaf-sprung live axle was standard first-generation practice.
Chassis, Suspension, and Brakes
The Z/28 used the first-generation Camaro’s semi-unitized structure with a front subframe carrying the engine and independent coil-spring front suspension, and a leaf-sprung live rear axle.
Where the Z/28 differed from other Camaros was in calibration. Heavy-duty springs, firmer damping, and quick-ratio steering gave it handling that genuinely justified the racing connection, and the car was far more capable through corners than the nose-heavy SS 396. Front disc brakes were part of the package rather than an option, which mattered for a car intended to be driven hard.
The 1970 second-generation Camaro would introduce a rear stabilizer bar for the first time, which the first-generation cars lacked — worth knowing when assessing how a 1969 behaves at the limit.
Performance
Period testing of the 302/290 hp Z/28 recorded 0–60 mph in approximately 7.4 seconds and a quarter mile in roughly 15.12 seconds at 94.8 mph.
Those figures understate the car. The Z/28 was never built to win stoplight drag races against big-blocks — a 396 SS would beat it in a straight line. Its purpose was road racing, where light weight, balance, brakes, and an engine that pulled hard to high rpm mattered far more than peak torque. On a circuit the Z/28 was in a different league from its big-block sibling, and the Trans-Am results demonstrate it.
Properly set up with correct gearing and the over-the-counter cross-ram induction, racing Z/28s were considerably quicker than the showroom figures suggest.
Production and Identification
Z/28 production by year tells the story of the car’s rising reputation:
- 1967: 602
- 1968: 7,199
- 1969: 20,302
Total 1969 Camaro production was just over 243,000 — the model’s best year to that point. The first generation ran slightly later than planned, continuing into late 1969 to bridge the gap before the second generation arrived.
For identification, the critical reference is the engine suffix code DZ stamped on the block, along with casting numbers and date codes. Because the Z/28 was an option package rather than a separate model, the VIN alone does not confirm it, and stripes, badges, and hoods can all be added to a base car. Given the value gap, verification through the cowl tag, engine stamping, and surviving documentation is essential.
Collectibility Today
The 1969 Z/28 is a blue-chip American collector car and one of the most desirable first-generation Camaros, rivalled only by the big-block SS cars and the rare COPO specials. Its combination of motorsport provenance, a unique engine, and the best-regarded styling of the generation keeps demand consistently strong.
Within 1969, the most sought-after cars combine the Z/28 with the RS package, the cowl induction hood, and a rear spoiler. Documented, numbers-matching cars with their original DZ302 command substantial premiums over cars with replacement engines — and because the DZ302 was used in no other production model, a correct engine is both essential and hard to replace.
Buying priorities: verify the DZ engine suffix code, casting numbers, and date codes against the car; confirm the four-speed is correct, since no automatic Z/28 was built in this generation; check the cowl tag and documentation; and inspect for rust in the floors, trunk, cowl, and rear frame rails. Aftermarket support for first-generation Camaros is excellent, so restoration is practical — but originality drives value heavily at this level.
Key Features Summary
- Purpose: SCCA Trans-Am homologation special, built to meet the series’ 305 cu in limit
- Engine: DZ302 — 327 block with 283 crankshaft, 302 cu in
- Output: 290 hp @ 5,800 RPM, 290 lb-ft @ 4,200 RPM (conservatively rated)
- Exclusivity: DZ302 fitted only to the first-generation Z/28 — no other production Chevrolet
- Transmission: Four-speed manual mandatory — no automatic offered
- Brakes: Front discs included in the package
- Racing: Camaros won 10 of 13 Trans-Am races in 1968 and the series again in 1969 — back-to-back Manufacturers’ Championships
- Performance: 0–60 mph approx. 7.4 sec; quarter mile approx. 15.12 sec @ 94.8 mph
- Production: 20,302 in 1969 — up from 602 (1967) and 7,199 (1968)
- Versus Ford: Outsold the Boss 302 by roughly 12 to 1
- Origin: Option code introduced December 1966; released December 29, 1966
- Key Figure: Vince Piggins, Chevrolet high-performance programme
- Popular Options: Cowl induction hood, rear spoiler, RS package, Positraction
- Not Available: Air conditioning
The 1969 Chevrolet Camaro Z/28 Specs
| BODY | |
| Manufacturer | Chevrolet (General Motors) |
| Class | Pony car / homologation special |
| Body Style | 2-door coupe |
| Generation | First generation (1967–1969), final year |
| Structure | Semi-unitized with front subframe |
| Assembly | Norwood, Ohio; Van Nuys, California |
| Z/28 Status | Option package, not a separate model |
| Option Introduced | December 1966; released December 29, 1966 |
| ENGINE — DZ302 | |
| Engine Type | OHV small-block V8, solid lifters |
| Displacement | 302 cu in (4.9 L) |
| Design Basis | 327 cylinder block with 283 crankshaft |
| Bore × Stroke | 4.00 × 3.00 inches |
| Compression Ratio | approx. 11.0:1 |
| Horsepower | 290 hp @ 5,800 RPM (conservatively rated) |
| Torque | 290 lb·ft @ 4,200 RPM |
| Induction | 4-barrel carburetor on aluminum intake |
| Racing Induction | Cross-ram manifold with twin 4-barrels, over the counter |
| Engine Suffix Code | DZ |
| Exclusivity | Fitted only to first-generation Z/28; never offered in any other Chevrolet |
| WHY 302 CUBIC INCHES | |
| Series Limit | SCCA Trans-Am: 305 cu in maximum |
| Problem | 327 too large; 283 too small |
| Solution | 327 block + 283 crank = 302 cu in short-stroke engine |
| Benefit | High-revving character ideal for road racing |
| TRANSMISSION AND DRIVETRAIN | |
| Transmission | 4-speed manual — mandatory |
| Automatic | Not available in first-generation Z/28 |
| Limited Slip | Positraction optional |
| Drive Layout | Rear-wheel drive |
| SUSPENSION, STEERING, BRAKES | |
| Front Suspension | Independent, coil springs, on front subframe |
| Rear Suspension | Live axle, leaf springs |
| Z/28 Calibration | Heavy-duty springs, firmer damping |
| Steering | Quick ratio |
| Brakes | Front discs included in Z/28 package |
| Note | No rear stabilizer bar (first fitted to the 1970 Camaro) |
| PERFORMANCE | |
| 0–60 mph | approx. 7.4 seconds |
| Quarter Mile | approx. 15.12 seconds @ 94.8 mph |
| Character | Road-racing balance over straight-line speed; a 396 SS was quicker in a straight line |
| RACING RECORD | |
| 1968 Trans-Am | Camaros won 10 of 13 races |
| 1969 Trans-Am | Series won again |
| Championships | Back-to-back Manufacturers’ Championships for Chevrolet |
| Historical Status | First Trans-Am street car |
| Versus Boss 302 | Z/28 outsold it roughly 12 to 1 |
| APPEARANCE AND EQUIPMENT | |
| Stripes | Twin racing stripes over hood and deck lid |
| Wheels | 15-inch with wide tires |
| Exhaust | Dual |
| Cowl Induction Hood | Optional — rear-facing scoop at base of windshield |
| Rear Spoiler | Optional |
| RS Package | Combinable — hidden headlamps; RS/Z28 highly sought |
| Air Conditioning | Not available |
| PRODUCTION | |
| 1967 Z/28 | 602 |
| 1968 Z/28 | 7,199 |
| 1969 Z/28 | 20,302 |
| Total 1969 Camaro | just over 243,000 |
| Homologation Requirement (1967) | 1,000 showroom-ready cars |
| SUCCESSOR | |
| 1970 Z/28 Engine | 350 cu in LT-1 (Corvette-derived) |
| Significance | Greater torque, milder cam — allowed TH400 automatic for the first time |
| AUTHENTICATION | |
| Z/28 in VIN | No — option package |
| Primary Reference | DZ engine suffix code stamped on block |
| Supporting Checks | Casting numbers, date codes, cowl tag, build documentation |
| Transmission Check | Must be four-speed manual — no automatic was built |
| Myth to Ignore | No DZ302 left the factory in a Corvette, Chevelle, or Nova |
| Rust Areas | Floors, trunk, cowl, rear frame rails |
1969 Chevrolet Camaro Z/28 – Frequently Asked Questions
Why does the Z/28 have a 302 cubic inch engine?
Because the SCCA Trans-Am series imposed a 305 cubic inch displacement limit. Chevrolet’s existing small-blocks did not fit — the 327 was too large and the 283 too small — so engineers combined the 327 cylinder block with the 283 crankshaft, producing a short-stroke 302 cu in engine that sat just under the ceiling and revved far more eagerly than a larger engine could.
How much horsepower does a 1969 Z/28 have?
Officially 290 hp at 5,800 rpm with 290 lb-ft of torque at 4,200 rpm. The rating was conservative — actual output was meaningfully higher, and the understatement served insurance and racing-classification purposes. The engine’s real strength was its willingness to rev, not its peak figure.
Was the DZ302 used in any other Chevrolet?
No. The DZ302 was fitted exclusively to the first-generation Z/28 across 1967–1969 and was never offered in any other production model. There is a persistent myth that DZ302s came in Corvettes, Chevelles, or Novas from the factory — they did not. Similar 302 small-blocks existed in racing programmes and over-the-counter builds, but no documented production car outside the Z/28 left the factory with a DZ-coded engine.
How many 1969 Z/28s were built?
20,302 — a dramatic increase from 602 in 1967 and 7,199 in 1968, reflecting how the racing success built the car’s reputation. Total 1969 Camaro production was just over 243,000. For comparison, Z/28 sales outnumbered Ford’s Boss 302 by roughly twelve to one.
Could you get a 1969 Z/28 with an automatic?
No. A four-speed manual was mandatory on every first-generation Z/28, because the 302’s high-revving character and narrow torque band demanded it. This changed for 1970, when the Z/28 adopted the 350 cu in LT-1 — a Corvette-derived engine with more torque and a milder camshaft — which made the Turbo Hydra-Matic 400 automatic available for the first time. Any first-generation Z/28 presented with an automatic is not original.
Is the Z/28 faster than an SS 396?
Not in a straight line. Period testing recorded the Z/28 at roughly 7.4 seconds to 60 mph and 15.12 seconds in the quarter mile — a 396 SS would beat that. But the Z/28 was built for road racing, where light weight, balance, brakes, and high-rpm power matter far more than torque. On a circuit it was in a different league from the nose-heavy big-block, as the back-to-back Trans-Am championships demonstrate.
How do I verify a genuine 1969 Z/28?
The key reference is the DZ engine suffix code stamped on the block, supported by casting numbers and date codes. Since the Z/28 was an option package it does not appear in the VIN, and stripes, badges, and hoods can all be added to a base Camaro. Confirm the four-speed manual, check the cowl tag, and seek surviving build documentation. A numbers-matching car with its original DZ302 is worth substantially more — and because the engine was used in nothing else, replacing a missing one is genuinely difficult.
What is the best 1969 Z/28 specification?
The most sought-after cars combine the Z/28 with the RS package (hidden headlamps), the cowl induction hood, and a rear spoiler. Documented, numbers-matching examples with original drivetrains command the strongest prices. Air conditioning was not available, so any Z/28 fitted with factory air is misrepresented.
