Cali roll call

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gmcyukondriver

Built, not bought.
Joined
Oct 12, 2010
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California
Sonoma County here.

What kind of engine performance upgrades can we get away with on the L31 and still pass smog?

Actually, there's quite a bit that's CA legal, the tough thing is finding stuff for these trucks. A lot of the specific generation performance parts have been discontinued for years. Mine's a TBI, but same would apply to the Vortec. Currently, I have a Whipple supercharger, and I bring all the smog legal paperwork when I take it to a smog shop. I have a few other goodies that are CA legal.


Of course, there are a few (very few) counties in CA that don't require the bi-annual smog checks. For example, Sonora county only requires when buying/selling a vehicle. I think there are a few others too, not sure how long that will last, though.
 

GarrettGmc

I'm Awesome
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Cottonwood Ca
If I was told right by a cousin, Trinity county and Humboldt county only requires smog when transfered. Some ppl around here get a po box in Trinity or Oregon since only an hour or so from the border an then they don't have to smog.
 

Jb36

Newbie
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Mar 29, 2017
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Southern California
If I was told right by a cousin, Trinity county and Humboldt county only requires smog when transfered. Some ppl around here get a po box in Trinity or Oregon since only an hour or so from the border an then they don't have to smog.
That's freakin awesome. I just assumed any place in California has to smog their vehicles.

Sent from my LGLS992 using Tapatalk
 

gstubbz

Hi I'm Gavin and I have an OBSession
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CA ⤖ Eureka, MT
Dang, guess I could post in this thread. Lassen County which is right next to Reno. My town is in the boonies, an hour and a half away from Reno.
 

GarrettGmc

I'm Awesome
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Dang, guess I could post in this thread. Lassen County which is right next to Reno. My town is in the boonies, an hour and a half away from Reno.

Damn i figured u were already on here. We'll have to change if SOJ ever goes through
 

jsfrmsj

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Jul 7, 2016
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USA
Over here in San Jose Bay Area. Any Nor-Cal folks interested in getting together for an off-road trail run? Maybe head to Pismo beach and get some So-Cal guys too.
 
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