Chevrolet: chevrolet silverado 1985 what..., chevrolet silverado, drive trains

Question
chevrolet silverado 1985 what type of rear end do i have ? do i have posi or full locking traction?

Answer
I HAVE A 99 SILVERADO AND I THINK IT IS LIKE THE LIM. SLIP
AXELS  TYPE OF   POSI BUT WHAT EVER WHEEL NEEDS THE MOST POWER TO  IT THAT WILL SEND IT THERE DO YOU HAVE 4X4 WITH A STD. AS MINE IS AUTO. BUT IF YOU HAVE A STD W/ 4 WHEEL DRIVE IT IS AS CLOSE TO POSI IF IT IS NOT.AS CHEVYS HAVE GOOD DRIVE TRAINS AND TRANNYS  TOO.ARE YOU HAVING TROUBLE WITH IT? AND BE SHURE TO KEEP THE REAR END LUBE CLEAN AND FULL.