New SP383 EFI Expands Chevrolet Performance’s Crate Engine Portfolio

At the SEMA Show, Chevrolet Performance is celebrating 65 years of Small-Block innovation with its all-new SP383 EFI. A contemporary twist on the classic 383 Small-Block “stroker” combination, the SP383 EFI melds the big torque of the long-stroke 383 with the drivability of electronic fuel injection. “Chevrolet Performance’s newest crate engine

Calibrating for the Future SAM Tech shares how to conquer the modern EFI tuning — including direct injection, torque modulation, and variable valve timing

Written By Stephen Kim Photography by the author EFI tuning, as we know it, is over. Stick a multimeter probe in it. Gone are the days of simply setting the fuel and timing maps, then calling it good. These days, it’s all about vehicle computer calibration. All of a sudden, the OEs