hello,
I am relatively new here and I am sure that this question has been asked before but I could not find it under search. I have a 1999 chev blazer 4 door ls 2wd. I had the dreaded intake manifold blow, repaired it all and then the bearings went on the bottom end. I know totally sucks! especially considering that the truck only has 96xxx miles!!! Ok now for my question, what year motors will be a direct fit? and by direct fit, I mean no modification no changing of the wiring harness nothing except pull my motor and drop that one in. I have been doing some looking and maybe I am wrong but it seems like I need one from a 99 only. I did not think that could be right so I turned to you guys, the blazer gods! also do I have to have one out of a 2wd or can it be from a 4x4?
thanks in advance!

 

98 thru 01-02 2wd 4.3L engines should be a direct swap into your application. Some things were phased in during the 01-02 range so you will want to look things over on them closely.

If you are up for a little swapping of oil pans, you can include the 4wd models as well. You just have to make sure to bolt up the pan on the replacement engine with a straight edge along the back of the block and the back of the pan since the pan is a structural member of the transmission/engine mounting.

And yeah, it has been covered in the past, but the intricacies of the vBulletin search tool are somewhat of an unknown until you read this.