I have a 99 blazer and the 4.3 is shot. what years are compatible with mine? any help with this would be greatly appreciated.

 

Thats too bad- but this is a loaded question as electrical changes from year to year may negate any savings by swapping in a different year engine as a whole unit. Please search the forum as this has been addressed countless times. A friend who is a non-gear head was able to shoe horn an early 327 into his 96 and ignored all the OP-Systems-with good results no less! Go figure...