There is a shipping carrier close to my house which sells damaged, lost or unpaid for frieght. They have two cadillac northstar engines there, I was wondering how to ID the northstars which came with a forged crankshaft. I thought the earlier ones had a forged crank then they downgraded it.

There is also a GM motor there that has 4.5L on the intake. It looks similar to an LS motor, it has an aluminum block, cast heads, roller cam, has aluminum valve cover which have v8 stamped in and colored red. has a spot for a gear driven distributor on the back of the intake. Just wondering if this motor has any performance potential.

 

Maintaining GM Northstar V8 Engine, Larry Carley, Underhood Service, October 2002

 

what about the 4.5 GM motor, yay or nay on that one

 

have not seen one of those, for devilles etc, they had 4.9 and 4.6 northstars, fleetwoods im not sure but the were different

 

this one isnt one of the northstars, its another gm motor that looks similar to a LS motor