i'm thinking about putting a big block in my 86 camaro. does anyone know where i can get some good headers.

Hooker makes a set, as do others. Look in the Exaust board and you'll find all the info you need

The Hooker swap headers are the cheapest but are also the poorest fitting. The majority of all the BBC swaps into third gens use the Hooker headers.

Other sources are
www.lemonsheaders.com
www.headersbyed.com (kits)
www.sandersonheaders.com
www.edquay.com

Chances are if this is a street only swap, you're not going to need a header with a primary tube size bigger than 1-7/8"