Topic: A new kind of exhaust?
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
Hey guys. As you know the original 1977 exhaust used a Y-pipe formation to accomidate the new addition of the catalytic convertor. However since my dad knows an emtions guy, andd the DMV already came to the house and seen the cat under the car before I took it apart, I should be ok. No one will have to know that there is not cat under the car. However the exhaust system I wanted to do was simple. Just two straight pipes going back, attatched to dynomax's super turbo mufflers, as you can see here: http://store.summitracing.com/default.asp?Ntt=dynomax+super+ turbo&Ntk=KeywordSearch&DDS=1&searchinresults=fa lse&N=0&target=egnsearch.asp Part number: WLK-17482
Is there any systems that I can order online that would fit a 1977 with these mufflers, or am I better off going to a meidas, or something and have them custom cut/weld me a new system?
Thanks guys,
-Louis

C3VR Lifetime Member #93
I checked on my DMV's website and their manual showed that there needs to be at least one catalytic convertor on a car from 1975 and above. All cars from 1974 and below don't need to have one. However I can get a roudn not having to have one of thjose piece of crap things on my car. Just remember.... CATS SUCK!!!!

You could go with high performance cats, your performance will be fine, and you will be legal. Other than that, the exhaust system for a 74 will work on your car. That is a true dual exhaust.
The cats are only a bad thing when there is too much restriction. With the dual high performance cats, that won't be a problem.
Summit probably carries these. If not check Jegs, etc. you can find them.
From what I understand if your car came with Cats, the EPA says it must ALWAYS have Cats thereafter. The issue is that most states stop requiring you to be tested after your car is 25 years old. So you're still breaking the law, but no one knows or seems to care. As soon as my '81 is tested for the final time in December, I suspect I may lose the Cat on a bumpy road and forget to replace it when I install an all new exhaust.


Ive mentioned this before.. just gut your cat(s) and then put them back in..
be sure to sleeve the inside so youll have smooth airflow..
they will pass a visual inspection.
Well, thanks guys. However Ben: THe car alrady passed visual inspection. My dad said there is a dude who will pass any car on the emissions test for $100. So I'm cool there. Also, forget cats, I hate em. As for the exhaust system the only place I could find it was Mid America. 603-850 mid america $269.99
I think I should just get the Dynomax super turbo muffler kit: summit: WLK-17482 and then go to a muffler shop by my dads work and have them build the exaust and weld it.
