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The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a 151 cu in (2.5 L) straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 until 1993.
1989 Chevrolet Camaro Z28 IROC 1LE Chevrolet Camaro RS interior The 1989 model year signified the return of the RS designation (last used in 1987 on a limited-edition California only model). The Rally Sport was now the base model featuring body ground effects mimicking the IROC and the previous Z28 but with the 2.8 V6 fuel-injected engine as ...
The Chevrolet Camaro is a ... The IROC-Z was introduced in 1985 and ... Chevrolet offered a 2LS model with a 2.92 rear axle ratio that increased fuel economy. ...
The Pontiac Fiero is a rear mid-engine, light sports car manufactured and marketed by Pontiac for model years 1984 – 1988. Intended as an economical commuter car with modest performance aspirations, it was Pontiac's first two-seater since their 1926 to 1938 coupes, and the first rear mid-engine mass-produced car by any American manufacturer.
The harmonic mean captures the fuel economy of driving each car in the fleet for the same number of miles, while the arithmetic mean captures the fuel economy of driving each car using the same amount of gas (i.e., the 13 mpg vehicle would travel 13 miles (21 km) with one gallon while the 100 mpg vehicle would travel 100 miles).
In 1985, this engine was optional only in the Camaro Z28, IROC-Z and Trans Am equipped with the WS6 performance suspension. The LB9 was also available in the '87-92 GTA and Firebird Formula. 215 hp (160 kW) and 275 lb⋅ft (373 N⋅m) and varied between 190–230 hp (142–172 kW) (with 275–300 lb⋅ft (373–407 N⋅m) of torque) over the ...
The LB6 ("W-code") 2.8 L (2,837 cc) engine was introduced in 1985 to replace the original LE2. It used multiport fuel injection and produced 130 hp (97 kW) at 4500 rpm and 160 lb⋅ft (217 N⋅m) off torque at 3600 rpm. Applications: 1985 Buick Skylark; 1985–1986 Cadillac Cimarron; 1985–1989 Chevrolet Cavalier; 1985–1986 Chevrolet Celebrity
ASC was contracted to convert all of the official Camaro Convertibles from 1987 to 1992. However, due to fuel economy restrictions mandated by the EPA, a convertible Firebird would have been assessed a $1200 Gas Guzzler Tax because the LB9 & L98 when paired with a Trans Am or GTA would have been lower than 22.5 average MPG. For this reason ...