Categories Datsun Tuning a Datsun 240Z That Won’t Rev Post author By Steve Post date June 13, 2019 Today I tune a Datsun 240Z with dual SU carbs that would not rev past 4000 rpm. ← Driving and Dyno Testing a 1966 Austin Healey 3000 Mark III BJ8 → Cheap 1986 Chevrolet Corvette Will It Run?