Carbed 4.3L V6 
Basic NA Buildup was on an 85-92 TBI block, they worked the TBI heads
(better if they used new vortecs)
and swapped it over to a carb.
Heres the N/A Buildup, made 301 hp at 5,500 rpm
http://www.hotrod.com/techarticles/engine/113_0208_chevy_43l_262ci_v6_engine_build/
Now, heres where they slapped the Vortech Supercharger on there, made 501 hp at 6200 rpms… using the stock hydraulic lifters, :ohnoes: 6400 rpms, it popped a head gasket.
http://www.hotrod.com/techarticles/engine/113_0210_43l_chevy_v6_vortechs_supercharger_install/
Those chevy v6’s, theyre tough little fuckers 