A broug warner t5
Remove the dipstick from the automatic transmission dipstick tube and read it. It will tell you what type of ATF to use.
On the transmission, right side just above the drain plug. Fill it until it's just below the filler port
No !
The 93 used a electronic / computor controlled transmission and the 91 did not. The 91 chevy trucks transmission wireing harness and computor is all together DIFFERENT. WON'T WORK.
On the drivers side of the throttle body.
YES.
The transmission fluid capacity for a 1991 S10 5 speed manual transmission is approximately 3 quarts. This can be purchased at any auto parts store.
with bolts and tighten
Yes. The original 4.3 is the 5.7 with the front two cylinders removed - it will bolt right up to the transmission, and accept the wiring harness. You will have to swap the Blazer's computer with one from a truck that had the 5.7 though.
That would be a 4L80E Transmission.
that would be a 700 r4. realistically any small block chev transmission will work the 4.3 is a 5.7 with the front 2 cylinders cut off but the 700 r4 is what you need and only a 4x4 one will work.
Inside transmission pan beside valve body.