Bill Barber
Well-Known Member
actually the M90 is perfect for the 4.0, up to about 5 lbs of boost, very reliable and they Whine like a scalded dawg.
you can have them ported and with the right pully they will make 10 lbs, but they get hot real quik.
You do not want to exceed 5 lbs on the 4.0, engine will not handle anymore in OEM form.
you can have them ported and with the right pully they will make 10 lbs, but they get hot real quik.
You do not want to exceed 5 lbs on the 4.0, engine will not handle anymore in OEM form.