Twenty-five buyers checked the box in 1970, eight in 1971 and twenty in 1972. Members get the complete RPO ZR1 parts list, the options Chevrolet refused to install and the 12-car LS6 ZR2 that followed.
CORVETTE MODELS
C3 Corvette ZR1 (1970–1972):
The Complete Guide
Every C3 Corvette ZR1, 1970–1972: The racing package of the LT-1 years: 53 cars over three years with the solid-lifter 350, the M22 Rock Crusher, heavy-duty brakes, springs and shocks, and no radio, air or power anything, plus the twelve 454 ZR2s of 1971. The story, every model year with its own section, the specs and the figures, how many were built, the colors, what one cost new and what one costs now, the editions and race cars, and a buyer’s guide.
Quick Nav: The Story · The Years · 1970 · 1971 · 1972 · Specs · The Siblings · The Cars · Videos · News · Buyer’s Guide · What to Pay · Known Issues · Market Reports · For Sale · FAQs
The Basics
The Car: The racing package of the LT-1 years: 53 cars over three years with the solid-lifter 350, the M22 Rock Crusher, heavy-duty brakes, springs and shocks, and no radio, air or power anything, plus the twelve 454 ZR2s of 1971
Years: 1970–1972 (3 model years)
Built: 45 by GM’s counts
Engine: LT-1 350-ci V8, 370 hp (1970) / 330 hp (1971) / 255 hp net (1972); ZR2: LS6 454, 425 hp (1971)
Power: 255 to 425 hp
Performance: 0–60 in 5.3 s · quarter mile 13.8 @ 104 · 140 mph (1971, period test)
Price New: $5,192 to $6,532
The Code: RPO ZR1, $968.95 (1970) to $1,010.05 (1972): 25 / 8 / 20 cars; RPO ZR2, $1,747 (1971), 12 cars
Successor: C4 Corvette ZR-1
Related: Corvette ZR1 guide, the C3 hub, C3 Corvette L88
The Overview
The C3 Corvette ZR1 was built 1970–1972, 45 cars by GM’s counts. The racing package of the LT-1 years: 53 cars over three years with the solid-lifter 350, the M22 Rock Crusher, heavy-duty brakes, springs and shocks, and no radio, air or power anything, plus the twelve 454 ZR2s of 1971.
The first ZR1 was a race package, not a model: the Special Purpose Engine Package put the solid-lifter LT-1 small block together with the M22 Rock Crusher, heavy-duty brakes, springs, shocks and anti-roll bars, a metal fan shroud and an aluminum radiator, and it could not be ordered with a radio, air conditioning, power steering or wheel covers. Chevrolet built 25 in 1970, 8 in 1971 and 20 in 1972. The ZR2 of 1971 was the same package around the 425-horsepower aluminum-head LS6 454, twelve cars, two of them convertibles that have sold for $962,500 and $863,500. The ZR-1 name returned on the C4 in 1990.
This page has every model year of the C3 Corvette ZR1 in its own section with the year page’s account, the specs, the numbers and the posts; the figures by year; the colors; how it compares to its siblings; the site’s guides, videos and news; and a buyer’s guide: which year to buy, what to pay, how to verify one, what goes wrong and the site’s market reports. The Corvette ZR1 guide has the whole line across every generation.
The C3 Corvette ZR1 Story
The 1970–72 Corvette ZR1
The ZR1 name first appeared without a hyphen during the 1970 model year, when it was a performance package for the C3 Corvette.
The third-generation Corvette ZR1 was first introduced in 1970 as the successor to the L88 Corvette. The car, which could be ordered as Regular Production Option (RPO) ZR1, came equipped with a new, solid-lifter, small-block engine that GM designated the LT1. The LT1 engine, which was manufactured by GM from 1970–1972, was a 350 cubic-inch small block that produced 370 horsepower. It featured 11:1 compression, a ‘178’ high-performance camshaft and a 780 CFM Holley four-barrel carburetor mounted to a special aluminum intake. Although not as powerful as the L88, the LT1 engine offered consumers an exciting engine platform that could power their Corvettes at and around the racetrack.
In addition to the LT1 engine, Corvettes ordered with RPO ZR1 came equipped with the M22 “Rockcrusher” transmission, heavy-duty power brakes with dual-pin front brake calipers (J56), a transistor ignition, a special aluminum radiator and a heavier-duty suspension package that included bolstered 7-leaf rear springs, shocks and heavy-duty 5/8 inch front sway bars and rear spindle struts/stabilizer bars. The car also came equipped with metal fan shrouds. Moreover, when ordering a ZR1, the following options were deleted from the Corvette, including: a rear window defroster (C50), air-conditioning (C60), power steering (N40), deluxe wheel covers (P02), the alarm system (UA6), AM/FM radio (U69) and AM/FM Radio, stereo (U79).
The deletion of these items was intentionally designed to help reduce the car’s overall weight as well as to reduce the power load put on the engine, thereby ensuring that more power was transferred from the engine, through the transmission and to the rear wheels. In fact, it was impossible to order the ZR1 with any of the “creature comforts” synonymous with the more conventional Corvettes being offered by Chevrolet dealers across the nation. Despite this, the 1970 Corvette ZR1 could be ordered as a convertible!
MORE: THE CORVETTE ZR1 GUIDE / THE C3 HUB
The C3 Corvette ZR1 Year by Year
Every model year of the C3 Corvette ZR1: what changed, how many were built, what it cost and what it made. Each year has its section below and its own research page on the site.
MORE: THE C3 HUB / CORVETTE ZR1 GUIDE
| THE YEAR | BUILT | PRICE NEW | POWER | |
|---|---|---|---|---|
 |
1970 C3 Corvette ZR1 RPO ZR1, the Special Purpose Engine Package: the 370-hp solid-lifter LT-1 with the M22 Rock Crusher, J56 brakes, F41 suspension, transistor ignition and an aluminum radiator; radio, A/C and power steering locked out; built for SCCA B-Production |
25 | $968.95 package | 370 hp |
 |
1971 C3 Corvette ZR1 The LT-1 detuned to 330 hp for low-lead fuel; eight ZR1s, the rarest year, beside the twelve 425-hp LS6 454 ZR2s (ten coupes, two convertibles), the only year of the big-block version |
— | $1,010 package | 330 hp |
 |
1972 C3 Corvette ZR1 The last C3 ZR1: 255 hp net from the LT-1, the same package and the same deletions; twenty built for a three-year total of 53; the badge then slept for eighteen years |
20 | $1,010.05 package | 255 hp |
1970 Corvette ZR1
The first ZR1 was RPO ZR1, the Special Purpose Engine Package, at $968.95: the 370-hp LT-1 with the M22 Rock Crusher four-speed, J56 heavy-duty brakes, F41 springs and shocks, K66 transistor ignition and an aluminum radiator with a metal shroud, built for SCCA B-Production. Radio, air conditioning, power steering, power windows, rear defroster, wheel covers and alarm could not be ordered. Twenty-five were built in 1970, 53 over three years, and a Monza Red coupe sold for $217,500 on Bring a Trailer in November 2024.
MORE: THE 1970 RESEARCH PAGE
1970 C3 Corvette ZR1: Specs and Numbers
The 1970 C3 Corvette ZR1 by the numbers, from the 1970 research page and the Compared dataset.
| SPEC | 1970 |
|---|---|
| Engines | 350 ci (5.7 L) small-block V-8 in three versions, including the new solid-lifter LT-1; 454 ci (7.4 L) Mark IV big-block V-8 as the LS5; the 460-hp LS7 was listed and never built for sale |
| RPO LT-1 | 350/370 hp @ 6,000 rpm, 380 lb-ft @ 4,000 rpm, 11.0:1, solid lifters, forged crank, 850-cfm Holley four-barrel on aluminum intake, 2.5-in exhaust, transistor ignition, 6,500-rpm redline, LT-1 striped hood; 1,287 cars, $447.60; four-speed only, no air conditioning |
| RPO ZR1 | LT-1 engine with the M22 heavy-duty four-speed, J56 heavy-duty brakes, F41 suspension, K66 transistor ignition and an aluminum radiator with metal shroud; radio, air conditioning, power steering, power windows, rear defroster, wheel covers and alarm not available; 25 cars, $968.95 |
| Power / torque | 370 hp / 380 lb-ft |
| 0–60 / quarter mile | 5.7 s / 14.2 @ 102 |
| Top speed | 135 mph |
| Weight | 3,390 lb |
| Built | 25 of 17,316 Corvettes |
| Price | $968.95 package |
1970 C3 Corvette ZR1: The Posts
Everything tagged to the 1970 C3 Corvette ZR1, newest first.
1971 Corvette ZR1
The ZR1 returned for 1971 at $1,010 on the detuned 330-hp LT-1: M22 Rock Crusher four-speed, J56 heavy-duty power brakes, F41 springs, shocks and stabilizer bars, K66 transistor ignition and an aluminum radiator with a metal shroud, with power windows, power steering, air conditioning, rear defroster, wheel covers, alarm and radio all locked out. Eight were built, the rarest of the three ZR1 years, and most are in the registries.
1971 Corvette ZR2. RPO ZR2 was the ZR1 package built around the 425-hp aluminum-head LS6 454 for $1,747: M22 four-speed, J56 brakes, F41 suspension, K66 ignition and the aluminum radiator, no comfort options and no automatic. Twelve were built in 1971, the only year, ten coupes and two convertibles. The convertibles sold for $962,500 at Mecum Indianapolis in 2022 and $863,500 at Monterey in 2023, and the export coupe for $650,000 at Indianapolis in 2023, which makes the ZR2 the most valuable Corvette of the 1970s.
MORE: THE 1971 RESEARCH PAGE
1971 C3 Corvette ZR1: Specs and Numbers
The 1971 C3 Corvette ZR1 by the numbers, from the 1971 research page and the Compared dataset.
| SPEC | 1971 |
|---|---|
| RPO LT-1 | 350/330 hp @ 5,600 rpm, 360 lb-ft @ 4,000 rpm, 9.0:1, solid lifters, forged crank, Holley four-barrel on aluminum intake, transistor ignition, 6,500-rpm redline, LT-1 striped hood; 1,949 cars, $483.00; four-speed only, no air conditioning |
| RPO ZR1 | LT-1 engine with the M22 heavy-duty four-speed, J56 heavy-duty power brakes, F41 springs, shocks and stabilizer bars, K66 transistor ignition and an aluminum radiator with metal shroud; comfort options not available; 8 cars, $1,010.00 |
| RPO ZR2 | LS6 engine with the same M22, J56, F41, K66 and aluminum radiator package; comfort options not available; 12 cars (10 coupes, 2 convertibles), $1,747.00; 1971 only |
| Power / torque | 330 hp / 360 lb-ft |
| 0–60 / quarter mile | 6.0 s / 14.5 @ 100 |
| Top speed | 130 mph |
| Weight | 3,390 lb |
| Price | $1,010 package |
1971 C3 Corvette ZR1: The Posts
Everything tagged to the 1971 C3 Corvette ZR1, newest first.
1972 Corvette ZR1
The ZR1 package made its last appearance in 1972 at $1,010.05: the 255-hp net LT-1 with the M22 Rock Crusher four-speed, J56 heavy-duty power brakes, F41 springs, shocks and stabilizer bars, K66 transistor ignition and an aluminum radiator with a metal shroud, with power windows, power steering, air conditioning, rear defroster, wheel covers and radio locked out. Twenty were built, bringing the three-year total to 53, and the badge would not return until 1990. A 42,561-mile 1972 ZR1 coupe sold for $159,500 at Mecum Indianapolis in May 2024.
MORE: THE 1972 RESEARCH PAGE
1972 C3 Corvette ZR1: Specs and Numbers
The 1972 C3 Corvette ZR1 by the numbers, from the 1972 research page and the Compared dataset.
| SPEC | 1972 |
|---|---|
| RPO LT-1 | 350/255 hp net @ 5,600 rpm, 280 lb-ft @ 4,000 rpm, 9.0:1, solid lifters, forged crank, Holley four-barrel on aluminum intake, transistor ignition, LT-1 striped hood; 1,741 cars, $483.45; four-speed only; air conditioning available for the first time (about 240 cars, with a 5,600-rpm tach); last year |
| RPO ZR1 | LT-1 engine with the M22 heavy-duty four-speed, J56 heavy-duty power brakes, F41 springs, shocks and stabilizer bars, K66 transistor ignition and an aluminum radiator with metal shroud; comfort options not available; 20 cars, $1,010.05; last year |
| Power / torque | 255 hp / 280 lb-ft |
| 0–60 / quarter mile | 6.9 s / 15.0 @ 95 |
| Top speed | 125 mph |
| Weight | 3,390 lb |
| Built | 20 of 27,004 Corvettes |
| Price | $1,010.05 package |
1972 C3 Corvette ZR1: The Posts
Everything tagged to the 1972 C3 Corvette ZR1, newest first.
C3 Corvette ZR1 Specs by Year
The figures for every year with a row in the site’s Compared dataset: GM’s where published, otherwise the period road tests.
MORE: CORVETTES COMPARED / THE ENGINES
| YEAR | ENGINE | POWER | TORQUE | 0–60 | ¼ MILE | TOP SPEED | WEIGHT | PRICE |
|---|---|---|---|---|---|---|---|---|
| 1970 | 350 ci solid-lifter LT-1, 370 hp | 370 hp | 380 lb-ft | 5.7 s | 14.2 @ 102 | 135 mph | 3,390 | $5,192 |
| 1971 | 454 ci aluminum-head LS6, 425 hp | 425 hp | 475 lb-ft | 5.3 s | 13.8 @ 104 | 140 mph | 3,530 | $6,532 |
| 1971 | 350 ci LT-1, 330 hp | 330 hp | 360 lb-ft | 6.0 s | 14.5 @ 100 | 130 mph | 3,390 | $5,496 |
| 1972 | 350 ci LT-1, 255 hp net | 255 hp | 280 lb-ft | 6.9 s | 15.0 @ 95 | 125 mph | 3,390 | $5,533 |
The C3 Corvette ZR1 Against Its Siblings
Where the C3 Corvette ZR1 sat in the C3 range: the other performance models of the generation, their figures and the gap between them.
MORE: C3 CORVETTE L88
| GENERATION | Z06 | ZR1 | THE GAP |
|---|---|---|---|
| C3 Corvette | — | 1970–72 ZR1: 370-hp LT-1 package, 53 built; 1971 ZR2 454, 12 built | No Z06 in the C3; the ZR1 was the racing package |
Every C3 Corvette ZR1: Editions, Pace Cars, Prototypes and Racers
The C3 Corvette ZR1 and the cars built from it that the site has guides for, with a picture each.
| THE CAR | YEARS | BUILT | |
|---|---|---|---|
 |
Corvette ZR1 (RPO ZR1) The Special Purpose Engine Package: the 370-hp solid-lifter LT-1 small-block with the M22 Rock Crusher, J56 brakes, F41 suspension and an aluminum radiator, no radio and no air; the successor to the L88 as the Corvette you ordered to race The guide / No Radio Allowed: inside the original / Year page |
1970–72 | 53 (25 / 8 / 20) |
 |
Corvette ZR2 The ZR1 package around the 425-hp aluminum-head LS6 454, $1,747, for one year only: ten coupes and two convertibles, the most valuable Corvettes of the 1970s The guide / Year page |
1971 | 12 |
C3 Corvette ZR1 News and Posts by Year
Everything tagged to the C3 Corvette ZR1’s model years, newest first.
The C3 Corvette ZR1 Buyer’s Guide
The 1970–72 ZR1 is the rarest regular-production Corvette package: 25, 8 and 20 cars, the LT-1 small block with the M22, the J56 brakes, the F41 suspension and no radio, air or power steering, plus the twelve 1971 ZR2s with the LS6 454. They are registry cars and they seldom trade; buying one is a matter of documentation, patience and the auctions where they appear.
A ZR1 verifies itself only on paper: the tank sticker or the build sheet with the package, the CTV engine suffix on a 1970, the LT-1 hood and the deleted options. Many LT-1 cars have been dressed as ZR1s because the parts are the same; without the paperwork, pay LT-1 money.
Which C3 Corvette ZR1 to Buy
Every model year of the C3 Corvette ZR1 with the verdict a buyer needs: what the year brought, which are collected and which are the value.
What a C3 Corvette ZR1 Costs Today
Auction and dealer results the site has tracked, by year; check whether a result includes the buyer’s premium, and treat asking prices and unsold high bids separately from completed sales.
MORE: THE C3 BUYER’S GUIDE / MSRP BY YEAR
| YEAR | BUILT | NEW | SOLD AT AUCTION |
|---|---|---|---|
| 1970 | 25 | $968.95 package | A Monza Red coupe sold for $217,500 on Bring a Trailer in November 2024 |
| 1971 | 8 | $1,010 package | ZR2 convertibles brought $962,500 (Mecum Indianapolis 2022) and $863,500 (Monterey 2023), the export coupe $650,000; the ZR1s are rarer still and seldom trade |
| 1972 | 20 | $1,010.05 package | A 42,561-mile coupe sold for $159,500 at Mecum Indianapolis in May 2024 |
How to Verify a C3 Corvette ZR1
The VIN positions, the labels, the stampings and the parts that prove a C3 Corvette ZR1 is what it claims to be, from the year pages, year by year; where a later year repeats an earlier one, only what is new is added.
1970: Verification on a 1970 starts with the engine pad: a V prefix and a CTK, CTR or CTU suffix (CTV for a ZR1) on a 3970010 block with 3973414 heads, a Holley R4489A or R4555A, the aluminum intake and the 2.5-inch exhaust make an LT-1, and the partial VIN stamped beside the suffix must match the car. A ZR1 needs the LT-1 plus the M22, the J56 calipers and proportioning valve, the F41 springs, the K66 distributor and the aluminum radiator with its metal shroud, and no factory radio or air conditioning. NCRS and Bloomington Gold judging sheets and old photographs help with all of them.
1971: Verification follows the 1970 drill with the 1971 codes: a V-prefix 3970010 block with a CGY suffix (CGZ for a ZR1), 3973487 heads, the Holley and aluminum intake and the 2.5-inch exhaust make an LT-1. An LS6 is the most valuable engine of the year and the easiest to fake with a set of aluminum heads on an LS5, so the suffix, the casting dates and the build sheet or tank sticker matter more than the badges, and a ZR2 or ZR1 needs the M22, J56 brakes, F41 bars, K66 distributor and aluminum radiator and no factory radio or air.
1972: Verification is easier on a 1972 than on any earlier Corvette because the fifth VIN character names the engine: L is an LT-1, W an LS5, K a base car, and a 350 with an LT-1 hood and a K in the VIN is a tribute. From there the engine pad should show a V prefix and a CKY suffix (CKZ for a ZR1, CRT or CRS with the air pump) on a 3970010 or 3970014 block with 3998916 heads, the Holley, the aluminum intake and the 2.5-inch exhaust, and the partial VIN stamped beside the suffix must match the car. A ZR1 needs the M22, J56 brakes, F41 bars, K66 distributor and aluminum radiator and no factory radio, air or power assists, and all twenty are known to the registries.
MORE: THE 1970 RESEARCH PAGE
The C3 Corvette ZR1 Inspection List
What to check on a C3 Corvette ZR1 before the money changes hands, from the year pages, with each year adding what is new.
1970: The C3 body sits on the C2’s birdcage and rusts in the same places: the windshield frame, the door hinge pillars and the frame kickups over the rear wheels and around the trailing-arm mounts. Budget for the vacuum system, seals and brakes on any 1970 that has sat, and for a correct LT-1 carburetor if the car has lost its original.
1971: Budget for the vacuum system, seals and brakes on any 1971 that has sat.
MORE: THE C3 BUYER’S GUIDE
What Goes Wrong: The C3 Corvette ZR1’s Known Issues
The faults a C3 Corvette ZR1 is known for, the years they affect, what they look like and what the fix is. None of them should stop a purchase; all of them should be on the checklist, and a car with the paperwork for them is the one to buy.
| ISSUE | YEARS | WHAT HAPPENS | THE FIX |
|---|---|---|---|
| Provenance | 1970–72 | The package left no VIN trace; only the tank sticker or build documentation proves it. | No paperwork, no ZR1 price. |
| Tribute cars | 1970–72 | LT-1 cars with the ZR1 parts added. | Registry and paperwork. |
| LT-1 running | 1970–72 | Solid lifters to adjust, a Holley to set up, 2.5-inch exhaust. | A specialist. |
| J56 brakes | 1970–72 | The heavy-duty calipers weep unless sleeved. | Check for leaks. |
| Birdcage and frame | 1970–72 | The C3 items. | Inspect. |
The C3 Corvette ZR1 Options and Editions That Matter
What moves the price of a C3 Corvette ZR1 beyond mileage and condition: the packages, the equipment groups and the special editions, and what each does to the value.
MORE: THE SPECIAL EDITIONS / MSRP BY YEAR
| OPTION OR EDITION | WHY IT MATTERS | WHAT IT DOES TO THE PRICE |
|---|---|---|
| The ZR1 package | LT-1, M22, J56, F41, the aluminum radiator; mandatory deletes. | The car is the option. |
| ZR2 (1971) | The LS6 454 version; 12 built. | The most valuable C3s after the L88s and ZL1s. |
| Coupe or convertible | Both built. | Convertibles have led the ZR2 results. |
| Color and documentation | The tank sticker, the Protect-O-Plate, the judging history. | The premium. |
What a C3 Corvette ZR1 Costs to Own
A ZR1 is an LT-1 C3 to run — a specialist for the solid-lifter engine and the Holley, parts available, insurance on an agreed value — and most are shown more than driven.
MORE: THE C3 BUYER’S GUIDE
The Site’s Market Reports on the C3 Corvette ZR1
What CorvSport has written about buying, selling and valuing the C3 Corvette ZR1: the market reports, the bargain hunting, the auction results and the cars it has listed, newest first.
How Many Of The Amazing C3 Corvette ZR1s Sold At Mecum Kissimmee 2025? — 2025
FOR SALE: 1970 Chevrolet Corvette Convertible LT-1 ZR1 — 2025
FOR SALE: Award-Winning 1970 Chevrolet Corvette ZR1 Live On BaT — 2025
FOR SALE: 1970 Chevrolet Corvette Convertible LT-1 ZR1 — 2024
FOR SALE: 1971 Chevrolet Corvette ZR2 Will Be Up For Grabs — 2023
C3 Corvette ZR1: Recalls, Service Bulletins and Maintenance
The site’s recall, service-bulletin and maintenance-schedule posts for the C3 Corvette ZR1’s model years and the C3 generation.
C3 Corvette ZR1s For Sale
The C3s the site has listed for sale, newest first; the C3 Corvette ZR1s are among them. The for-sale page has every Corvette the site is following and the auctions page the results.
Go Deeper
The pages around this one.
Corvette ZR1: the ultimate guide — every generation
The C3 Corvette hub — the generation, 1968–82
Corvettes Compared — every year’s figures
FAQs
What years was the C3 Corvette ZR1 made?
1970–1972, 3 model years. The racing package of the LT-1 years: 53 cars over three years with the solid-lifter 350, the M22 Rock Crusher, heavy-duty brakes, springs and shocks, and no radio, air or power anything, plus the twelve 454 ZR2s of 1971.
How many C3 Corvette ZR1s were built?
45 by GM’s counts: 1970 25, 1972 20.
How much horsepower does the C3 Corvette ZR1 have?
LT-1 350-ci V8, 370 hp (1970) / 330 hp (1971) / 255 hp net (1972); ZR2: LS6 454, 425 hp (1971). 255 to 425 horsepower across the years
How fast is the C3 Corvette ZR1?
1970: 0–60 in 5.7 s, 135 mph · 1971: 0–60 in 5.3 s, 140 mph · 1971: 0–60 in 6.0 s, 130 mph · 1972: 0–60 in 6.9 s, 125 mph (GM’s figures or the period tests; the Compared page has them all).
How much did the C3 Corvette ZR1 cost new?
1970: $968.95 package · 1971: $1,010 package · 1972: $1,010.05 package. The MSRP by Year page has every year in today’s dollars.
What is a C3 Corvette ZR1 worth today?
See What to Pay in the buyer’s guide above: the site’s tracked auction and dealer results by year. The figures move, and the for-sale feed shows asking prices now.
How many C3 ZR1s were built?
Fifty-three: 25 in 1970, 8 in 1971 and 20 in 1972, plus twelve ZR2s in 1971 with the 454 LS6. They are among the rarest regular-production Corvettes and the hardest to verify, since the parts were all available separately.
What did RPO ZR1 include?
The LT-1 engine, the M22 close-ratio four-speed, J56 heavy-duty brakes, the F41-type springs and shocks, a metal fan shroud and a heavy-duty aluminum radiator; it could not be ordered with a radio, air conditioning, power steering, power windows or a rear defroster.
Is the C3 ZR1 related to the later ZR-1 and ZR1?
In name only. The 1970–72 package was the Special Purpose Engine Package for SCCA racing; the C4 ZR-1 of 1990 reused the code for the LT5 car, and the C6, C7 and C8 ZR1s followed. The ZR1 guide has all five.
How many C3 ZR1s were built?
25 in 1970, 8 in 1971 and 20 in 1972, plus 12 ZR2s in 1971: 53 ZR1s and 65 cars in all.
How much is a 1970–72 ZR1 worth?
The site’s tracked results run from the low six figures for a ZR1 to the high six figures for a ZR2; the Values table has them. They trade rarely.
How do I verify a C3 ZR1?
The tank sticker or build sheet with the ZR1 package, the engine suffix and casting dates, the deleted options and the registry. The VIN alone does not show it.
