i have a 1999 blazer, broke a rod in original motor, i pulled it out and scrapped it. i purchased a 2wd motor from the same year. replaced oil pan..... not sure what if anything else there is to change, replace. any info would be greatly appreciated. i know im a noob, but i did my research before i asked..

 

maybe exhaust mainfolds but not 100% sure... do you still have the old motor? look at them to see if anything else is different.

 

In theory the engine will drop right in, to include a 4.3 out of a fullsize pickup or Astrovan.
But sometimes their are little things like the oil pan etc...
Like said if it looks the same it is.

 

Oil pans are different, on the 4x4's they relocate the oil filter for a reason. It's a b%@&h to get to. I would swap the remote oil filter system over. Other than that its all the same if you have the same year

 

ok, i have swapped the remote oil filter assembly, replaced the oil pan, but somethings not right.. i have the front diff dropped down and its like the enigne is just too tall... if i had the engine bolted down on the mm's again the front diff would not come back up in alignment with its bolt holes

 

i hope i wasn't lied to about the year of the engine.... is there any way to tell by numbers or marks stamped on it??? EDIT: no i do not have the old motor, if the exh mans are different ill have to buy new ones... :/ i do know that is the same style motor, 4.3l v6 vortec, but its like its too tall, i have thought about taking it from a 4wd to a 2wd but not sure how, also don't really wanna f*ck with the front diff. plus i like 4wd. on a side note i have thought about my styer m95 with German armor piercing rounds(on several occasions)

 

according to the local chevy parts department, 2wd and 4wd exh mans are the same, also lookie what i done.

 

post a picture of the top of the motor so we can see it. Alot of times the year/years can be identified by just seeing the motor and knowing the differences as the motor evolved over the years.

 

heres 4 pictures, i traded the intake manifold and injectors because i didnt like the look of the old one. other than that its all the same

 

and yes that is a blow torch.... cross threaded a bell housing bolt in the block.... trying to get it out with out helicoiling