LT1SS

is it possible to convert my '97 into a single cat set up and still be emissions legal? my friend had a 95 with the edelbrock mid length headders that i really liked. my goal is to be able to run open headders and be able to put the cat in for testing. or are there any LT set ups that are emmissions legal?

LT1

iTrader: (1)

As far as i know theres nobody that makes long tubes that will pass CA emissions. You might be able to go with single cat system using aftermarket cats.

Single cat system were only on the pre 95 years. Ive had few 95 fbody, auto's had dual cat and the 6 speeds had single cat in 95.

camar0corey

iTrader: (22)

Depending on how strict emissions are where you are at, they will know you are supposed to have two cats and you may fail.

Best thing would be to post what state you are in, perhaps then other member can tell you how it went with aftermarket setups?

Jditlfm

iTrader: (26)

What i would do is go find an inspection station and ask them what they would pass and what they wont. I would see about doing long tubes with a off road Y pipe then buying two cats and having them weld one cat into each side of the y pipe.

Elliott's94Z

iTrader: (12)

Pacesetter makes smog legal Longtubes that have the AIR/EGR

the_merv

iTrader: (88)

My stock '95 Auto had a Single Cat.. you must have had ones that were made later in that year.

LT1SS

thanks for the help guys. I live in idaho and i dont think that they are very strict. the thing that sucks is that i have a friend that used to work at an inspection station. now that he doesnt anymore i gotta go legal.

AChotrod

iTrader: (17)

you could aways cut a stock cat in half and tack weld it to the y-pipe to make it look like you have them.

the_merv

iTrader: (88)

^^Done that a couple of times..

C5042081

iTrader: (5)

nice idea, might do wonders for visual inspection lol

LT1

iTrader: (1)

Your right, the later half of 95 is when dual cat was adapted. I guess it depends on the build date.

LT1

iTrader: (1)

Ya I seen those long tubes your talking about, but ive talked to few smog guys that told me they wont pass with any type of long tubes.

Theres place I get mine passed under the table w/ $ no prob.

Elliott's94Z

iTrader: (12)

Theres guys passing with them here in Oregon with no problems. They wouldn't be putting them out if they didn't work