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Corvette ZR1 5.7 L (350 cu in) LT5 V8 in a C4 ZR1. General Motors acquired Group Lotus, a UK based engineering consultant and performance car manufacturing firm, during 1986. The Corvette division approached Lotus with the idea of developing the world's fastest production car, to be based on the C4 generation of the Corvette.
The C4 ZR1 ran from 1990 thru 1995 model years. In 1991, all Corvettes received updates to the body, interior, and wheels. The convex rear fascia that set the 1990 ZR-1 apart from the base model was included on L98 Corvettes, making the styling of the expensive ZR-1 nearly identical to that of the base cars.
The following year, the 2017–present Callaway SC750 Camaro ZL1 was introduced and it is the most powerful of all Callaway Camaros to date, as of mid-2018: 750 bhp at 6500 rpm and 739 lb-ft torque at 3650 rpm (SAE). Dragstrip results indicate 0-to-60 mph time of 3.2 seconds and 1/4 mile performance of 11.0 seconds at 128 mph.
While the ZR1 nameplate first arrived as a go-fast package for the early C3 Corvettes, its proper introduction to the general public came during the Corvette’s fourth-generation.
ZR1, (or ZR-1), is a designation that has been used on several different generational models of the Chevrolet Corvette. For the 3rd generation (C3) , the ZR1 & ZR2 were special engine packages. Only 53 of these packages were optioned during the 1970 to 1972 model years.
1987 – The valve cover surfaces were changed so that the mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter to 4 bolts along the centerline of the valve covers (this design debuted on the Corvette in 1986, and the Chevrolet 4.3L 90 degree V6 the year before). Also changed were the mounting angles of the two ...
Before that, the C6 Corvette ZR1 featured a 638-hp supercharged LS9 6.2-liter V-8, which was a sizable step up from the C4 ZR1. That top-spec Vette had a comparatively humble naturally aspirated ...
3 By 1 ⁄ 4 mile times (11.0 s or less) ... Noted specifications [vi] Up to 1 foot (305 mm) rollout ... Chevrolet Corvette C7 ZR1: