i got a 87 blazer its got a 2.8L auto in it im looking to do a motor swap but i want to leave the trans in it can some one tell me what motors will mount up to the trans and what you guys recomend can i put a 305 in it and use the same tranny its a 4x4 i want some power and the 2.8L has 266840 on it now still running strong but i want to swap it

 

The only motor that is worth it to install is the 3.4L v6. The larger longitudinal mount engines will require you to change the transmission as the bell housing bolt pattern is different.

 

what motors will bolt up to the 2.8L trans

 

read the previous post by swartlkk. the 3.4L will be the best choice.

 

will that bolt up to the 2.8L trans or no cuz im looking for something that will bolt up to the 2.8L trans i dont want to have to change the trans its a 4x4

 

the 3.4L will bolt right up to your stock trans.

 

Look for a 3.1 or 3.4 out of a GM car. They will bolt right in... be sure and get the computer and related hardware if you wanna run the factory fuel injection.