hi i know i am a newbie so this is my first post so if you wanna bash me its fine lol but i am dropping a 402bbc in my 84 firebird not a 396 bored but a true 402 that has a decent cam 781 oval port heads performer rpm intake and roller tip rockers i need to know what kind of modifications to be done that won't give me gray hairs to put this big sob in and if its possible to use full length headers thank you patrick

 

Welcome aboard thirdgen.org.

I moved your post to its own thread. You were basically starting from scratch rather than picking up where the thread where you posted left off.

See the sticky in the top section of this forum about big block swaps. There's no one single answer, so look through what it says and decide what you're going to do. I'm not sure I've heard of any BBC into a 3rd gen yet that didn't involve some hair loss.