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Smog exemption in CA

Subject: Smog exemption in CA
From: Douglas Shook <>
Date: Sun, 23 Feb 2003 08:58:00 -0800
References: <>
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I have been putting my '74 TR6 back together 
after a total engine rebuild, and was 
waffling regarding whether to use the stock 
compression and Strombergs, or mill the head 
and do something more creative for the intake.

Here in CA, it was mandated that all cars 
post 1973 had to pass the smog test, and any 
changes here probably would cause it to fail.

Anyway, I just pulled this off the DMV site

> How old does a vehicle have to be to qualify for a smog exemption?
> Vehicles with a year model 30 years old or older are exempt from the smog 
>certification requirements.
> Example: The calendar year is 2003- 29 = 1974 exempt year model
> The current calendar year minus 29 equals the year model exempt from smog 

-- "free at last, free at last."

A tag question, any opinions/experience out 
there regarding how much to mill the head 
related to available octane?  I want to be 
able to run it on pump gas.



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