hello from sunny so cal,i came across this by accident :thumbsup:,tons of great info,i will soon be swapping over my 83'k30 from a 454 to a j code 6.2 with a ATS turbo set up,nv4500,np203/205 DOUBLER, 4:56 gears 38.5 tires,i drive this truck to go 4 wheeling(sometimes 500 miles roundtrip),i hoping to gain some MPG over the Gasser,i got tons needed info on my upcoming swap ,
