This isn't the first 1970 Chevrolet Corvette Stingray on these pages. It's not even the first one in Mille Miglia Red. But that other one was a small block coupe while this beastie is a convertible powered by a big block 454 cubic inch Chevy rat motor, as the badge on the side of the hood bulge proudly proclaims.
There was only one big block option on the menu for the '70 model year, and that was the LS5 version of the 454. It was an oversquare, all-iron pushrod motor with a 4¼" bore and 4" stroke, 10.25:1 compression ratio, sucked premium fuel through a four-barrel Rochester carb to the tune of 9-12 miles per gallon, and was rated at 390 SAE gross horsepower. It could be backed with a four-speed manual or a three-speed auto and a variety of rear axle ratios were on the menu.
Road & Track tested a 1970 Stingray 454 coupe with the three-speed Turbo Hydra-Matic slushbox and the 3.08:1 "economy" rear end. The tall final drive gave a top speed of 144mph, but acceleration was tame for a big block 'Vette, with a 0-60 time of 7.0 seconds and a 15.0 quarter at 93mph.
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