hey guys, i have a 1989 Pontiac Firebird Formula with a lb9 and 700r4, 2.73's out back. shes bone stock, i was wondering what ur oppinions/suggestions are for the headers/cat/catback exhaust i chose. im open to all suggestions and oppinons! i have to stay emmissions legal, im in NY

Shorty Headers:
http://store.summitracing.com/defaul...055HKR&FROM=MG

Cat:
http://store.summitracing.com/defaul...O-9118&FROM=MG

Cat-Back Exhaust:
http://store.summitracing.com/defaul...-17233&FROM=MG

thanks for the help guys! any idea how much hp/tq this would add?

 

Those are fine except I'm not a fan of Flowmaster mufflers when it comes to power making. I would look into something like Magnaflow or Dynomax with straight through designs. Also see if you can get ceramic coated headers.

 

awesome, ill have to look into those, any idea how much hp/tq those would add? id like to wake up my 305 a bit!

 

i have a 91 camaro rs with a 305, i put edelbrock tes headers on it with a hi-flo dynomax cat and a dynomax cat back system, total it was about 550 dollars for all at summit, here are the linkd to them.edelbrock tes headers
dynomax cat

cat-back system

 

if u want o build up your 305 do a search in here, there are some great articles people have found that can get u over 300 horsepower in a 305 tbi