Does a 1986 camero automatic transmission with 2.8 ltr v-6 match up 2005 Chevy blazer v6?

No, a 1986 Camaro automatic transmission and a 2005 Chevy Blazer V6 are not interchangeable. The transmissions are completely different designs, have different bolt patterns, and likely different control systems (electronic vs. cable). Even if the engines were the same displacement (which they likely are not; the 2.8L V6 was offered in both vehicles, but the specific transmission applications differed significantly across the years), the transmissions themselves are not compatible.