Heads, Cam and Emissions
Thread Starter
Instructor
Joined: Apr 2000
Posts: 148
Likes: 1
From: Lynnfield, MA USA
Heads, Cam and Emissions
I have just ordered a heads and cam package: Katech LS1 Stage II, The cam specs are:
566-Intake
569-Exhaust
222-@50 Intake
226-@50 Exhaust
In addition to this I am installing Bellenger headers to the stock exhaust system (Bassini cat back). Cats will be in place.
Questions is should I have any emission problems with the car on the inspection dyno?
566-Intake
569-Exhaust
222-@50 Intake
226-@50 Exhaust
In addition to this I am installing Bellenger headers to the stock exhaust system (Bassini cat back). Cats will be in place.
Questions is should I have any emission problems with the car on the inspection dyno?
Melting Slicks
Joined: Dec 1999
Posts: 3,020
Likes: 0
From: Union City CA
Re: Heads, Cam and Emissions (Andy_A)
I was told that a cam that size and with split duration may be tricky - may or may not. Tuning will definitely help when going for the smog dyno.
George
George
Safety Car
Joined: Oct 2000
Posts: 4,080
Likes: 565
From: Allen TX
Re: Heads, Cam and Emissions (Andy_A)
That's a pretty healthy cam (not huge, though), but I agree with the above poster.
The key will be being able to tune timing advance and fuel delivery at low speeds...where they run the emissions test. LS1edit or something like that would be an invaluable tool to have.
Some of these bigger cams that have some decent overlap can be interesting to get to pass...even with cats. But its not impossible. It may just take a few swipes of the keyboard in tuning mode. :)
[Modified by WA 2 FST, 6:42 PM 3/20/2002]
The key will be being able to tune timing advance and fuel delivery at low speeds...where they run the emissions test. LS1edit or something like that would be an invaluable tool to have.
Some of these bigger cams that have some decent overlap can be interesting to get to pass...even with cats. But its not impossible. It may just take a few swipes of the keyboard in tuning mode. :)
[Modified by WA 2 FST, 6:42 PM 3/20/2002]
Advanced
Joined: Nov 2001
Posts: 97
Likes: 0
From: Coppell TX
Re: Heads, Cam and Emissions (WA 2 FST)
I haev the thunder 224\561 cam with TPIS headers, cats, magnaflow Xpipe and corsa touring on my 6 spd and passed my emissions test in Dallas. I was worried at first becuase it was the most extensive test I have ever seen. I think my car needed a shower or a cigarette after that test. :lol: :lol: :lol:
