4.3

hi,i have a 91 blazer ,automatic 4x4 with a 4.3 engine that needs replacing .i need to know what model engines would fit this.most used engines ive found are vortec long block would that fit into mine ? any info appreciated ..thanks,mack

A small block 350 would fit, I believe, and would make it a nice sleeper!

I think any TBI 4.3L will fit from 1989 to 1994.