Chevrolet Camaro (fourth generation)

Chevrolet Camaro (fourth generation)
Chevrolet Camaro (fourth generation)
1993ChevroletCamaroZ28-001.png 1993 Chevrolet Camaro Z28
Camaro.png
Manufacturer General Motors
Production 1993–2002
Assembly Sainte-Thérèse, Quebec, Canada
Predecessor Chevrolet Camaro (third generation)
Successor Chevrolet Camaro (fifth generation)
Class Pony car
Muscle car
Body style 2-door coupe
2-door convertible
Layout FR layout
Platform F-body
Engine

207 cu in (3.4 L) 160 hp (119 kW) L32 V6
231 cu in (3.8 L) 200 hp (149 kW) L36 V6
350 cu in (5.7 L) 275 hp (205 kW) LT1 V8

346 cu in (5.7 L) 310 hp (231 kW) LS1 V8
346 cu in (5.7 L) 325 hp (242 kW) LS1 V8
Transmission 4-speed automatic
5-speed manual
6-speed manual
Wheelbase 101.1 in (2,568 mm)
Length 2000–02: 193.5 in (4,915 mm)
1993–99: 193.2 in (4,907 mm)
Width 74.1 in (1,882 mm)
Height 2000–02 convertible: 51.8 in (1,316 mm)
2000–02 coupe: 51.2 in (1,300 mm)
1994–99 convertible: 52.0 in (1,321 mm)
1993–99 coupe: 51.3 in (1,303 mm)
Related Pontiac Firebird
Callaway SuperNatural Corvette

The fourth-generation Chevrolet Camaro debuted for the 1993 model year on an updated F-body platform. It would retain the same characteristic since the first-generation's introduction back in 1967; 2-doors, 2+2 seating, available as a coupe (with optional T-top roof) or convertible, rear-wheel drive, and a choice of V6 and V8 powerplants. The 1998 model year was refreshed and revised with both exterior and engine changes. The fourth-gen Camaro would last up through the 2002 model year when General Motors discontinued production due to slow sales, a deteriorated sports coupe market, and plant overcapacity.[1][2]

Contents

1993

1993 was the debut year for the fourth generation Camaro, and production continued until 2002. Production was moved from GM's Van Nuys, California, assembly plant to Sainte-Thérèse, Quebec, Canada in 1993. The new design incorporated sheet moulding compound (SMC) made from chopped fiberglass and polyester resin for the roof, hatch, doors, and spoiler.[3] Both the front and rear suspension design was improved. Base Camaros were powered by a 160 hp (119 kW) 3.4 L V6. The 1993 Camaro also featured the LT1 V8 engine with 275 hp (205 kW) and 325 lb·ft (441 N·m) torque that had been introduced in the Corvette one year earlier, as well as an optional Borg-Warner six-speed manual transmission when ordered with the V8. The Camaro was the first of many vehicles to use this gearbox. In 1993, the Camaro Z28 was selected as the official pace car for the Indianapolis 500. A "pace car edition" as a $995 option found 633 buyers and featured "Indy 500" identification on black and white body color scheme with multicolored pinstriping and white painted roadwheels.[4]

1994

Several changes occurred for 1994. The 4L60 automatic transmission was replaced with the more dependable and better built 4L60E that included electronic controls, and was also used in Chevrolet trucks and Tahoe of this era. Accordingly, the car's on-board computer was modified from dealing only with the engine as in 1993 and earlier, to controlling both the engine and transmission on automatic models.

The computer, in 1993, was run via Speed Density, which measured engine speed (RPM) and load (MAP in kPa) to compute airflow requirements and then use that against the VE table to get the proper fueling for conditions. An IAT (Intake Air Temperature sensor) was also used as air density changes with temperature. In 1994 however, the computer logic was changed over to a Mass Air Flow system. This system uses a Mass Air Flow Sensor placed in front of the throttle body to measure the incoming airflow into the motor. This is measured by using a heated wire in the sensor in the airstream path which has heat pulled away from it via the incoming air. This reduced heat is converted into a voltage signal which is sent to the PCM which then converts that voltage signal in to mass flow. The computer uses engine sensors to judge engine conditions and provide the proper fueling off of this mass airflow reading. This was one of the main differences between the 93 and 94+ F-Body cars (and 92-93 Vette's compared to 94-96) and one of the items that makes a 93 model unique. Another prominent difference between the "Speed Density" 93's and the 94+ cars is how the programming (or custom tuning) of the computer takes place. In 1993, the stock computer uses a Memcal chip, which is a removable chip from the factory computer. Contained in this chip is the program for the car to run. In the 1994+ cars, this was swapped to a non-removable reflashable chip, which could be reprogrammed via the Auto Line Data Link, or ALDL, located underneath the driver side of the dash, next to the center console. Many people view this a more user-friendly and easier way to tune the vehicle.

Dashboard gauge graphics were changed from yellow to white. There was also a spot in the gauge cluster that says ASR off. GM had every intent to put ASR or Acceleration Slip Regulation (Pontiac called it "TCS") in the 94 F-bodys, but it never made it into production until 95. The front brakes were revised on the Z28 model. Cooling fans were changed mid-year from a parallel to a series setup. On low both fans operated on 6V, but on high both operated on 12V. The V-8 LT1 equipped Camaro Z28s did 0-60 in 5.7 seconds and quarter mile times of 14.2.[5]

1995

In 1995, base Camaros in California were equipped with the 3800 Series II engine for emissions compliance while base Camaros sold elsewhere retained the 3.4 L (207 cu in) engine. This would be the last year the 3.4 L (207 cu in) V6 engine would be available. For the LT1-powered Camaros, the often-problematic Opti-spark distributor was updated to include a vent to remove moisture from the unit. The cam drive system for the distributor was also changed, making "early" & "late" model cams and distributors non-interchangeable. 1995 was also the first year the fourth-generation Camaro had the option of painted side bars and mirrors. Traction control became available as an option on LT1 Camaros, but was installed on the base Camaros. Z28 rooftops, door handles, and mirrors, which were previously only available in black, now had the option to be painted the same as the body color.

1996

1996 Chevrolet Camaro

1996 saw minor mechanical revisions, as well as small power gains from the new OBD II-compliant engine controls. All base model Camaros were now equipped with the 3800 series II. V8 models still came with the 5.7L LT1 engine. The dual catalytic converters required by OBD-II resulted in lower restriction and a mild power boost to 285 hp (213 kW) and 325 lb·ft (441 N·m) of torque. Two option packages also returned: the RS (last seen in 1992), an appearance option for the V6 model, and the SS (last seen in 1972), a performance and appearance package for V8-powered cars. The SS cars were the highest factory performance Camaros offered at the time and included a functioning hood scoop and new five-spoke 17 in (43 cm) x 9 in (23 cm) wheels. The new wheel and tire package on the SS resulted in better handling and braking compared to the Z28. Convertible Super Sport cars however had 16 inch ZR1 style wheels. Also available this year for the V6 model was the Y87 package, which included an Auburn limited-slip differential, better tires, dual exhaust tips, 4-wheel disc brakes, a sportier steering ratio, and more aggressive gear ratio in the differential for automatic equipped cars. Available was a 4-speed automatic transmission or 6-speed manual transmission.

1997

1997 Camaro RS

For the 1997 model year, the Camaro featured a new interior and tri-colored taillights that would be standard on all models from 1997 to 2002. It was offered with a "30th Anniversary Edition" that included unique orange stripes on white base paint. It was available only on the Z28 and SS models. A 30th Anniversary Camaro may be identified by RPO code Z4C on the trim tag. There were 3,352 30th Anniversary Z/28s and 957 30th Anniversary SS cars were built. An additional 108 30th Anniversary Camaro SS vehicles were modified by SLP to include a 330 hp (246 kW) version of the LT4 engine (108 total LT4 cars were made, 100 US, 6 Canadian & 2 prototypes). SS cars will have RPO code R7T. The LT4 was the fastest factory-built Camaro available, as well as the most expensive at over US$38,000. New 5-spoke 16-inch wheels became standard on the Z28 this year (17" ZR1 style on SS coupe models) available in either polished, chrome, or white on the 30th Anniversary models, replacing the previous 10-spoke "salad-shooter" design.

1998

GM LS1 V8 in a 1998 Z28

For the 1998 model year, the Camaro was revised and received a new front fascia. This replaced the quartet of square inset headlights. Replacing the LT1 was GM's all-new 5.7 L (346 ci) LS1, which had been introduced with the Corvette C5 in 1997. The all-new design featured an aluminum cylinder block with iron sleeves, reducing weight by about 95 lb (43 kg) with aluminum compared to the iron block LT1.

1998 Camaro Z28

Minor changes were made to the suspension and the brakes were increased in size. The LS1 powerplant was rated at 305 horsepower for this year. Total production for 1998 was just 48,490.

1999

1999 Camaro in Hugger Orange

Only a few changes were made to the Camaro for 1999. These included new colors such as "Hugger Orange", fuel tanks were now plastic with 16.8 gallon capacity instead of 15.5 gallon metal units, LS1 valve covers switched to a center-bolt style, and traction control became available on the V6 models. A new "oil change" light was added to the instrument cluster as GM introduced their early oil-life monitoring systems. Coolant temperature gauges were replaced with a dummy gauge. A Torsen differential was added for Z28 and SS models. 1999 was the last model year for the RPO 1LE performance option which included factory installed double adjustable Koni shocks, stiffer springs, a larger front and rear anti-roll bars, and stiffer suspension bushings.

2000

2000 Camaro V6

Changes for 2000 were also largely cosmetic in nature. Monterey Maroon Metallic was added as an optional color, similar to the previously-available Medium Patriot Red. The SS, however, was not available in this color. GM also changed the name of the previous paint color "black" to "ebony". A new four-spoke steering wheel, as found in other GM models of the time, was introduced to replace the two-spoke steering wheel dating back to the 1993 cars. A new 10-spoke 16 in (41 cm) wheel became available, but the older 5-spokes were still optional. The 3.8L (231 ci) V6 and 5.7 L (346 ci) LS1 V8s continued with no changes.

2001

2001 was the lowest production year for the Camaro with 29,009 units. This was partially due to production ending earlier than usual to begin work on the 35th Anniversary cars. The Z28 and SS models received the intake manifold from the LS6, the engine used in the fifth generation Corvette Z06 from 2001-2004. This change also resulted in a revised camshaft profile and removal of the EGR system. GM also introduced a new slave cylinder for the clutch assembly that was superior to the design of previous years, as well as an LS6 clutch in manual models. Accordingly, stated power ratings were increased to 310 hp (231 kW) for the Z28 and 325 hp (242 kW) for the SS which also added a power steering cooler. SLP reintroduced the RS model this year, which included rally stripes and stock cold air intake system and Z28 take-off exhaust (from their SS conversions).

2002

2002 SS 35th Anniversary Edition convertible

The Camaro remained almost completely unchanged from 1998 to 2002. Sales continued to decline. GM announced that 2002 would be the final year of production for the Camaro, as sales numbers were not high enough to justify a redesign and the car could not be priced high enough to make low volume production profitable.

2002 Camaro with police package for the CHP.

A dash plaque above the audio system commemorated the 35th anniversary of Camaro production.

A special 35th and final generation Anniversary Edition was offered for the SS trim level. It included nose-to-tail stripes, embroidery on the front headrests, silver CAMARO inserts for the front and rear bumpers, unique 35th Anniversary SS decals, and unique 17 inch wheels. The 35th Anniversary Camaro was only available as a convertible or with T-bar, T-tops. 3,000 Camaros with the anniversary package were produced for the United States and 152 for Canada.[citation needed]

The final fourth-generation Camaro was built on 27 August 2002;[6] total production for 2002 was 42,098. The Boisbriand plant, the only GM plant in Canada outside of Ontario, then closed down.

GM's Performance Division unveiled a Z28 show vehicle at the 2002 Woodward Dream Cruise as send off for the Camaro's 35 year heritage. It emulated the 1960s and 1970s Penske-Sunoco stock TransAm race team vehicles.[7]

References

  1. ^ "Camaro, Firebird lines to end with 2002 model year". Associated Press. Oklahoma City Journal Record. 2001-09-26. http://findarticles.com/p/articles/mi_qn4182/is_20010926/ai_n10148436. Retrieved 2007-06-01. 
  2. ^ McCoy, Guy. "Rising from the Ashes". Popular Hot Rodding. http://www.popularhotrodding.com/features/0409phr_2007_chevrolet_camaro/. Retrieved 2007-08-04. "Publicly, GM blamed slow sales, a deteriorated sports coupe market, and plant overcapacity. For the 4th generation camaro's got the all new small blocks LT1 and LS1 small blocks." 
  3. ^ Young, Anthony (2004). Camaro. MBI Publishing. p. 123. ISBN 9780760319321. http://books.google.com/books?id=-jtZR_8cu90C&pg=PA123&dq=1993+Camaro+SMC+body+panels&hl=en&ei=4RSITNmPK8Gclgf36MjFDg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDkQ6AEwAA#v=onepage&q=1993%20Camaro%20SMC%20body%20panels&f=false. Retrieved 2010-09-08. 
  4. ^ "Young, p. 125". Books.google.com. http://books.google.com/books?id=-jtZR_8cu90C&pg=PA127&dq=1993+Camaro+pace+car&hl=en&ei=-ReITNqzEsOclgfo4-zZDg&sa=X&oi=book_result&ct=result&resnum=2&ved=0CDkQ6AEwAQ#v=onepage&q=1993%20Camaro%20pace%20car&f=false. Retrieved 2010-10-13. 
  5. ^ "Thunderbird Club of Iowa". http://www.albeedigital.com/supercoupe/articles/0-60_Quarter_Mile_Times/C_0-60times.html. Retrieved 2009-06-13. 
  6. ^ Cooper, Anderson (2002-08-27). "Newsnight Transcripts". CNN. http://transcripts.cnn.com/TRANSCRIPTS/0208/27/asb.00.html. Retrieved 2006-12-27. 
  7. ^ "2003 Heritage Camaro and Trans AM". 2002firehawk-c26.net. http://www.2002firehawk-c26.net/HeritageFBody.html. Retrieved 2010-08-13. 

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