| Re: sick ht4100
Easiest thing to do is to install a 1989 through 1992 Allante' 4.5. You have to use all the original emissions equip and modules. Footprint is exactly the same. Exhaust manifolds, EGR valve, diverter valve, O2 sensors, and upper intake off old engine all need to be reused. I've never tried to put another non-Allante' Cadillac engine into an Allante'. I know the lower intake is different on Allante's that other Cad's and that is work to swap. Not sure about the heads. |