Monte Carlo Cars The First generation 1971
Picture Of Monte Carlo CarsThe 1971 model year saw only modest styling changes. Inside, the SS model got new "European symbol knobs", and a four-spoke steering wheel became optional. 1971 Monte Carlo also saw the addition of a stand-up hood ornament. Mechanically, it was largely unchanged, although the small-block Turbo-Fire 400 two-barrel engine was dropped. Other engines had compression ratios lowered to allow the use of regular leaded, low-lead, or unleaded gasoline, per a GM corporate edict. Engine ratings fell to 245 hp (183 kW) for the base Turbo-Fire 350 CID (5.7 L) two-barrel, 270 hp (201 kW) for the Turbo-Fire 350-4V, and 300 hp (224 kW) for the Turbo-Jet 400. The SS 454 engine was actually raised to a nominal 365 gross hp (272 kW) despite the reduction in compression ratio. This increase in horsepower was a result of the 454 engine using the more aggressive camshaft from the 390 hp 454 used in the 1970 Chevrolet Corvette and full-sized sedans.
Picture Of Monte Carlo Cars
Chevrolet listed both gross and SAE net horsepower figures in 1971 with the impending change to SAE net ratings in 1972. The ratings compared as follows:
Picture Of Monte Carlo Cars
Picture Of Monte Carlo Cars
There has been no documented case of a 1971 Monte Carlo SS car with the 425 hp (317 kW) LS-6 version of the 454, with solid valve lifters and a longer-duration camshaft, previously found in the 1970 Chevelle SS 454 (where it was rated at 450 hp (336 kW) however, they did come with an LS5 454. The Turbo Hydramatic officially remained the only transmission for the SS, but a heavy-duty clutch option on the order form suggests that it may have been possible to special-order a 454 LS-6 with a four-speed manual transmission (the four-speed wasn't listed officially as an "SS" option but was available as an RPO in regular Monte Carlos with the 350 and 400 engines). The exact number of such combinations, if any, is unknown since they were not officially listed as factory options but possibly assembled through Chevrolet's "Central Office Production Order" (COPO) process that had previously made possible model/engine combinations not officially available. However, there has never been a documented case of such a combination. Chevrolet records indicate that the factory only installed the LS-6 installations in Corvettes that year.
Picture Of Monte Carlo CarsChevrolet listed both gross and SAE net horsepower figures in 1971 with the impending change to SAE net ratings in 1972. The ratings compared as follows:
Picture Of Monte Carlo Cars| Engine | Carburetor | Gross HP | Net HP |
|---|---|---|---|
| Turbo-Fire 350 CID V8 | 2-bbl | 245 hp | 165 hp |
| Turbo-Fire 350 CID V8 | 4-bbl | 270 hp | 175 hp |
| Turbo-Jet 400 CID V8 | 4-bbl | 300 hp | 260 hp |
| Turbo-Jet 454 CID V8 | 4-bbl | 365 hp | 285 hp |
Picture Of Monte Carlo CarsThere has been no documented case of a 1971 Monte Carlo SS car with the 425 hp (317 kW) LS-6 version of the 454, with solid valve lifters and a longer-duration camshaft, previously found in the 1970 Chevelle SS 454 (where it was rated at 450 hp (336 kW) however, they did come with an LS5 454. The Turbo Hydramatic officially remained the only transmission for the SS, but a heavy-duty clutch option on the order form suggests that it may have been possible to special-order a 454 LS-6 with a four-speed manual transmission (the four-speed wasn't listed officially as an "SS" option but was available as an RPO in regular Monte Carlos with the 350 and 400 engines). The exact number of such combinations, if any, is unknown since they were not officially listed as factory options but possibly assembled through Chevrolet's "Central Office Production Order" (COPO) process that had previously made possible model/engine combinations not officially available. However, there has never been a documented case of such a combination. Chevrolet records indicate that the factory only installed the LS-6 installations in Corvettes that year.
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