wasup veryone i have a 86 iroc-z with the 305 tpi and i was wonderin if put a ls1 or lt1 would their be a way for me to pass smog i live in california . please any help is greatly appreciated im new to this stuff.

 

short answer: no.

use the search feature and you should be able to find out what will pass and what won't. I don't know much about the Kalifornia smog laws except that they are very strict and most swaps will not pass.

 

I've seen two LS1 swaps pass the BAR inspection. One in a second gen, another in a third gen.

At the most basic level you have to conform to the CARB (California Air Resources Board) guidelines for engine change or modification
The criteria are:

The engine must be the same year or newer than the vehicle.
(the date can usually be found on the head, sometimes the heat shield will have to be removed to view it)

The engine must be from the same type of vehicle (passenger car, light-duty truck, heavy-duty truck, etc.) based on gross vehicle weight.
(this means no B20 motors in civics or Integras, although they came in cars in Japan those cars had no US equivalent models.

If the vehicle is a California certified vehicle then the engine must also be a California certified engine.
(this aspect is not nearly as important as the next)

All emissions control equipment must remain on the installed engine.
(more specifically all emissions control equipment related to the motor you are installing, this means if you have an EGR system on you car already but the motor you are swapping does not, you can remove the EGR, on the other hand, if the motor you are swapping does have EGR but the car does not, it�s time to install EGR.

Thad's Golden rule of Reff: "make it look stock" the closer to factory appearance the better.