I currently have a completely stock 1992 Camaro RS with the 305 tbi. The stock exhaust has the log manifolds with non bandrel bent pipes which have an OD of 2 1/4 inches I believe. I just recently purchased Hooker 2055 headers which will be jet hot coated, MAC offroad pipe, flowtech 3 inch cutout with qtec electric cutout and flowmaster catback. How much do you think I will be able to drop my et's?

 

assuming the car runs 16.80's (most lo3's) then you may pic up about .5-.8 seconds. expect mid/low 16's. i would consider a cam swap and induction swap ( either ultimate tbi mods/tpi/carb) to see a real gain cause that what's choking you down after your exhaust is replaced.

 

yeah i am guessing a few mph, and droppping .4

 

Bone stock the car ran 16.3, which could have been improved upon further with more track time, but I was only able to get 2 runs in and I didnt have enough time to do what I wanted.

 

ok, yeah, expect probably a 15.8 then. the lo3's around here must be pretty ragged out cause they are pulling v6 times.

 

We will see, but I am shooting for much better than that. I know for a fact my car had more in it than a 16.3. Like I said I only got 2 runs in, and on those runs I was basically just experimenting. It was just too crowded that night I dropped .5 seconds off my et and gained almost 4 mph from my first run to my second run if that says anything. BTW, the car is BONE STOCK right down to the paper filter. Yes, I would say the L03's in your area are pieces of crap. I would consider my 100k+ mile L03 to be in good shape though.

 

well, good luck to ya! i hope that you replace that paper element when you do your exhaust as it goes in the *every-little-bit-helps* category!