Could someone please tell me where the oil pressure switch is at on my 91 s10 blazer it has the 4.3

 

I know on later 4.3's its on the back of the block next to the distributor. Also, that's where it is on small blocks. I bet that's where it is on your '91, as well.

 

yep. driver side of the distributor. if its a 4.3 tbi you gotta remove the throttle cable bracket to get to it. i used a pair of channel locks to get it off. make sure you put on some teflon tape if it doesnt have the red sealant on the treads.

 

Thank you guys so much I appreciate it