Im selecting a cam for my 4.030 x 3.900 LS build for my 2500 would a 212/218 cam with a 5.49/5.49 lift and a 115+5 lsa pass emissions? I have that sniffer test here in utah

 

Man Utah is even worse than Cali!

 

How old is the truck it's going into? 2001 and newer don't require a sniffer test in Utah. But my Comp 212/218 low lift passed in California when I still lived there.

 

That's a pretty mild cam. I would assume it will pass as long as you've got properly sized cats.

 

You should be OK. There are some tuning tricks to help too...

 

Mines a 2001 they did they sniffer on it last time they said half tons don't but 3/4 tons do idk if that sounds right

 

Where about in Utah are you? I just redid my emissions in January in Davis county and don't recall have a sniffer test done. My 01 is a 1500

Edit: ah my bad I misread that. I didn't know 3/4 ton trucks had to have it done. As long as you still have cats and a good tune it should be fine.

 

salt lake they said 1500s don't but 2500s do I thought it was odd

 

How big do you think i could go with a 400ci motor before it wont pass

 

Here's a consideration for anyone contemplating what will/won't pass.

In my metro, if a newly registered auto is brought into the metro testing counties it will be sniff tested upon it's first test. Once it passes the sniff test the first time, it's just an OBDII checkup annually to scan for codes. If you're planning big upgrades on a newly registered vehicle, it's best to get it tested/registered first, and then go for the build.