one of your problems could be in the injectors they maybe putting to much fuel.
CHANGE TH E INTAKE MANIFOLD MAYBE EXHAUST YEARS VARY
41-47 psi, engine off, fuel pump running.
YEah
The Vortec Motor hasn't changed sence it came out. it will fit perfectly.
Yes.
block and heads are the same but not the computers
what are you bypassing
needs overhaul rings ect.
It has a chain and not a belt. No maintenance required.
4.3 liter vortex motor holds 18 gal.
YES, However, the heads are different on the 1996. they are the most sought after Vortex heads..everything will bolt right up and run great.
The water pump on a Chevy Blazer 4.3l is on the front of the engine. The Fan and fan shroud will have to be removed to gain access.