How hard is it to pass smog with a cam?
Senior Member
Joined: Jul 2006
Posts: 811
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From: 4-22 / 7-25
Car: '91 Z28 L98 G92
Engine: Modded L98
Transmission: Modded 700R4
Axle/Gears: Modded 10-Bolt
Re: How hard is it to pass smog with a cam?
My car, as well as many others, passed (easily). Look for the thread "Emissions Test" in the Southern California forum.
Bill
Bill
Joined: Sep 2000
Posts: 2,504
Likes: 195
From: Moorpark, CA
Car: '91 GTA, '92 T/A Convertible
Engine: GTA: 350 w/Vortec heads, T/A: 305
Transmission: Pro-built 700R4
Axle/Gears: GTA: 3.27, T/A: 2.73
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: How hard is it to pass smog with a cam?
First, it depends on the cam. A streetable cam will pass a lot easier than a race cam. Stick to a duration under 230 and LSA of 112 or higher. Two, it depends on your tune. I'm guessing since you have an '83 that you're a carb setup? There isnt anything you can do to the computer but you can change the needles and seats, adjust the idle screws, the floats, etc to get the best idle and cruising performance out of it.
As Burnout said, he just passed smog with a Comp XFI268 cam and TPI setup tuned by me, and I just passed with a Lunati 226/232 cam and TPI setup tuned by me.
Its all in the tune.
As Burnout said, he just passed smog with a Comp XFI268 cam and TPI setup tuned by me, and I just passed with a Lunati 226/232 cam and TPI setup tuned by me.
Its all in the tune.
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