{"id":148975,"date":"2026-05-25T12:47:51","date_gmt":"2026-05-25T17:47:51","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=148975"},"modified":"2026-05-25T12:47:51","modified_gmt":"2026-05-25T17:47:51","slug":"hennessey-test-drives-a-1700-hp-challenger-srt-demon-170","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=148975","title":{"rendered":"Hennessey Test Drives a 1700 hp Challenger SRT Demon 170"},"content":{"rendered":"

\"Hennessey<\/a><\/p>\n

Alex Roys and Adam Klisares from Hennesseey Performance<\/a> test drove their purple \u201cDemon 1700 Twin Turbo<\/a>\u201d on the strip and street. The unique car is built by Hennessey’s internal skunkworks division Hennessey Special Operations with a twin-turbo 440 ci (7.2 L) Hemi V8. The motor features a Dart iron block (4.185-inch bore, 4.00-inch stroke), billet steel crank, forged steel rods, billet aluminum pistons, two Precision PT6870 turbochargers, and twin water-to-air intercoolers. The combo produced 1355 hp<\/a> (996 kW) and 1202 lb-ft (1629 Nm) of torque to the wheels on 23 psi (1.5 bar) of boost on the dyno. Hennessey Special Operations backs the monster motor with a billet converter, Stage 3 automatic transmission, upgraded driveshaft, and 3.09 ratio differential. Listen to Alex and Adam give their review of the car in the video below. <\/p>\n