Quote Originally Posted by fubar569 View Post
the 4.0 was a northstar. everything about it was northstar. IIRC only difference between it and 4.6 was either the bore or the stroke. everything else was the same down to the cams IIRC.

It was not an exclusive and IMO GM should've shoved it into more cars. the N* is an excellent motor when maintained well.
:-) I stand corrected.