Hell my name is Donald an I'm new to the forum I have a 2005 s10 blazer with a 4.3 and auto tranny..cold some one please fill me in on some info about swapping a 5.3 I've seen a lot of motors but all the motors have different vin code numbers what does the numbers or letters mean and or could someone fill me in on what 5.3 I need to buy please any info would be greatly appreciated thanks

 

Welcome to the forum. If your not even sure which motor to buy you are going to need way more help them just that. Any 5.3 will work but it's a lot of time and money!