| Re: The "4.9 liter turbocharger, stage 1" thread. GM-3 IHI 6.5 liter diesel turbocharger. It is used and will probably need a rebuild in the bearing area You can almost count on that! This will be for the 4.9 liter '91 Seville. She has run low 15's in the 1/4 mile, so I know she has what it takes. Not bad for a stock luxury car! Especailly when all the torque is at the low end of the RPM range! As it stands right now, I may be looking at a nice 75 hp increase from the turbo on 4-6 psi of boost That is a very reasonable estimate provided you can manage the fuel. That's what Hot Rodding is all about! No denying that! |