was gonna drop a 15b-ft into a bj42.. oem turbo and intercooler (dyna) .. h55f transmission.. hoping to be able to cruise long distances in europe on highway at 120km/h (75mph) and was wondering what rpm I should aim for.. looking for godspeed..
The 15Bs reach peak torque at around 1800 rpm and cruiser happily on boost at 2000-2500 rpm. If you want a high cruise speed then you'll want 3.70 gearing and larger than standard tyres.