LT-1/LS-1 swap links topic

Discussion in 'High Tech Retrofits' started by Skaal-tel 79, Jan 18, 2006.

  1. Hotshot

    Hotshot Member

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    50-state legal LS swap...??

    I've found the majority of LS-swap guides are focused on hot rodding and horsepower, so I'm having a hard time finding a good reference for 50-state legal emissions muscle car swaps. :mad: So I figured the best way to solve that problem is to write one. I don't know how many people out there have the same problem I do, but if this post helps one other person's swap become a little easier, that's good enough for me. :D

    I still want to do an LS-swap on my '73 and turn it into an emissions-friendly daily driver, but I might have to move out to California this March for work. (More specifically, the LA area since I work in film.) Here's what I think I need to know/do:

    - The new engine must retain all of its original emissions equipment, including cats, charcoal canister, etc.
    - The car must pass a visual inspection (a tech actually examines everything on your car), a sniffer inspection, and a computer inspection.
    - Truck engines cannot be put into cars and vice versa, but the cut off is a 1-ton truck. So in other words, you can nab a 6.0 out of a Silverado/Escalade/whatever, but you couldn't take the engine out of a Ford F-350 and put it in a Mustang. (Sake of example.) But you can probably put an LS1 intake on a 5.3 or 6.0 and call it an LS1 and no one would be the wiser. But don't quote me on that, I'm no California smog tech.
    - You need a "Check Engine" light in your car. (I'm thinking about changing the "Fasten Seat Belt" light to read "Check Engine" with some creative modification. ... Wait, is that legal?)
    - Aftermarket parts must have an Executive Order to be allowed on an engine. (In other words, your camshaft needs to read "legal in California" on the box)

    Things I still need to find out (please post if you know the answer!):

    - How difficult is it to convert all of the LS emissions equipment to the older chassis? (cats, vapor, charcoal canister, etc.) [And if I do need cats, do I need heat shields? How far from the headers do I need to place them? etc...]
    - Is it possible to keep the car registered at my dad's house here in Arizona and avoid all this bull, or will they catch me for that?
    - Can you dress a 6.0 LQ4/LQ9 like an LS1 and just call it as much? Do you think they'll catch you for that?

    I also heard on some forums that pre-1974 cars have it much easier. Can anybody verify this? If so, can I get a link to the laws for pre-74's?

    Lastly, I understand the E-ROD that GMPP came out with is 50-state legal for emissions. They don't have a lot of information on their website, though. Anyone have any deets as to how we can copy their formula and come up with a cheap conversion for our existing LS engines?

    Sources I've found:
    http://www.autorepair.ca.gov/80_BARResources/07_AutoRepair/Engine_Change_Guidelines.html
    http://www.arb.ca.gov/msprog/aftermkt/replace.htm
    http://www.bar.ca.gov/80_BARResources/02_SmogCheck/Frequently_Asked_Questions_Part_1.html
    http://www.ehow.com/list_7168251_california-engine-swap-laws.html
    http://www.ehow.com/list_6832171_california-engine-swap-smog-laws.html
    http://www.gmperformanceparts.com/erod/
    http://www.jagsthatrun.com/Pages/Chevrolet_S-10_V-8_Smog.html
     
    Last edited: Oct 18, 2010
  2. sbca96

    sbca96 Veteran Member

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    I agree, I have a '78 Camaro I will be swapping a '94 LT1 into shortly, and it
    needs to pass smog. Most the guys doing these swaps are back east where
    they havent adopted the California strict smog laws YET. The bonus for you
    is 1973 is smog exempt in California, so your free to do whatever you want.

    I was looking through this thread for info on the fuel system, there are a lot
    of dead links, I guess I will post a question.

    Tom
     
  3. 1971CamaroGuy

    1971CamaroGuy LS Swapped 1971 Camaro

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  4. GreenMachineRS

    GreenMachineRS Member

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  5. kain13

    kain13 Veteran Member

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    ^^like these kits
     
  6. RICARDO1969

    RICARDO1969 Veteran Member Lifetime Gold Member

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    F-BODY PART NUMBERS FOR POWER STEERING AND ALTERNATOR BRACKETS,BOLT'S
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  7. onelapduster

    onelapduster Veteran Member

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    Ace, you rock.
     
  8. ReDDruM

    ReDDruM Member

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    can you use an LT1 t56 on an LS1?
     
  9. jerhofer

    jerhofer Veteran Member

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  10. DoTheDew

    DoTheDew Veteran Member

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