Alpina put a different BMW V-8 in its Roadster; that 4.8-liter/295-cu.in. unit made 375 hp and 383 lb-ft of torque. Engine and Transmission. The Z8's mechanical components were proven pieces from BMW's—and the M division's—parts bins. As was the 507, the Z8 was powered by a V-8 engine, this one the 4,941-cc DOHC, 32-valver from the M5. The BMW Alpina B7 (E65) was based on the BMW 745i. It was powered by a modified version of the 4.4 L BMW N62 V8 engine, designated the H1 by Alpina. Compared to a stock N62 unit, the Alpina H1 featured a different engine block, a forged crankshaft, and lower compression, high-strength Mahle pistons. Thanks to a centrifugal type supercharger and That 60-mph sprint is only 0.1 second behind the significantly more powerful, 612-hp 2021 Alpina XB7. 2023 BMW X7 M60i Vehicle Type: front-engine, all-wheel-drive, 6-passenger, 4-door wagon The ALPINA B5 Biturbo makes just a few ponies more, with 621 horsepower and 590 lb-ft. The two engines are very different in their delivery, though. The BMW M5 is designed to rev more freely, make Alpina started in the 1960s, but if we’re going to be absolute sticklers about it, it only started officially making road cars in 1983. Of course, the difference between what’s official and what is well, it’s the entire reason we have the phrase ‘de facto’. Alpina was tuning cars in the mid-Sixties, building race cars by the late 4e9k.