Fans of General Motors’ LS engine platform are no doubt aware of the exploits of Super Dave Adkins. His Adkins Motorsports’ 1971 1/2 Camaro pushed the platform to record setting elapsed times on eighth- and quarter-mile passes — including resetting the LS eighth-mile record last year with a 3.75-second rip at 199 mph in the eighth. It also blasted to a 5.97 at 243 in the quarter.
At last year’s PRI show, however, he debuted a gorgeous Gary Naughton Race Cars-built 2017 Corvette race car propelled by the same billet LS powerplant that delivered those record-setting performances.
Boosted by a set of new Garrett GTX5533R Gen II turbochargers, this 427-cube LS is a Baker Engineering creation based on a tall-deck billet block topped by the company’s own billet cylinder heads with massive intake ports that flow more than 430 cfm. Feeding those heads is a Thomsen Motorsports billet intake manifold fronted by a Wilson billet throttle body.
To support the power this top-end can feed a host of rugged gear fills the short block, including Ross pistons, GRP aluminum rods, and more. A Baker Engineering ProCam oil pan and a Dailey Engineering four-stage belt-driven rotor-pump supply plenty oil to lubricate the beast.
Tuned by TJ Grimes at Baker Engineering, a Holley Dominator EFI system orchestrates the output of the engine sparked by a coil-near plug setup and fueled by Billet Atomizer fuel injectors and a Waterman mechanical fuel pump.
The aforementioned GTX5533R Gen II turbochargers are capable of feeding up to 2,500 horsepower each. Built with second-generation aerodynamics to produce 20 percent more power, they feature fully machined compressor inlets, compressor outlets, and ported shrouds. Moreover, the high-flow housings are designed specifically to maximize the efficiency of the Gen II compressor wheels.
In this combo, those turbos are paired with Turbosmart 60mm ProGate wastegates and 50mm Race Port blow-off valves to control over 60 pounds of boost fed to what Baker Engineering describes as the “fastest LS engine in the world.”
It should be fun to see just how this combination will run on the track in its sleek, new Corvette home.
Garrett Advancing Motion