no
Everything
160 foot lbs
The crankshaft sensor shold be on the engine block about midway on the back side.
They actually made several different versions of that motor...
set timing on 1991 c2500 5.7 liter
1,8,4,3,6,5,7,2 same as the firing order
305 Small Block Chevy engines typically were 8.6 compression ratio and would use 87 octane fuel.
Yes. Chris Alston, at Alston Chassis Works, makes a kit, with everything you need.
50 to 60 lbs
yes. a 4.3 is the same as a small block Chevy for most everything except missing 2 cylinders
Chevy-GM 5.0 liter is 305 CID.