Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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The original poster mentioned that the ECM coding had to be 100% stock in order to pass. Manual conversions require software tuning, otherwise they set the "check engine" light(another no-no) at a minimum. |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
WOW. Glad I live in NY (can't believe I just said that!) You can put anything you want in a pre 96 car. 95 and older are safety only inspections. But then again you don't see many 30 year old cars on the road except on a weekend in the summer. Buddy put a crate 454 in a 95 Camaro . Just a PCV valve with a carb .
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Then re-code the PCM with a J2534 passthrough ( I use a WiFi MDI clone ). You use that VIN with a single VIN license in the web applet at the AC Delco TDS web page. Program as a replacement PCM and it'll dutifully program your PCM with manual transmission parameters etc for that VIN. |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
the trans thing is crazy how the hell does that make a difference in emissions. fuel economy possibly if you kept say a th350 or 400 but emissions aren't going to change. I wonder how they deal with replacement engines on stock cars or say if this engine failed can you just swap in another 5.3? so many more things I wonder but im in ky so no point in me asking.
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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If you have an LS with the ECM TCM setup the ECM expects to get feedback from the TCM. If the ECM or PCM doesn't get feedback from the TCM or transmission in response to its' requests it gets lost. Some ECM/PCM will drop you into limp mode and others just plain freak out. Harvey Hardway would brute force it with a tuning package. You run the risk of missing something minor that'll freak out the ECM/PCM in some obscure manner if you try to be Harvey Hardway. The easiest way to handle running a manual transmission or an older automatic transmission on a modern engine is to program the PCM or ECM using a manual transmission vehicle VIN and then fine tune the settings with your tuning package. The fuel and spark tables from a 3/4 or 1-ton truck may be advantageous as well. |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
I don't live in cali will never live in cali so I don't want to clutter up his thread only curious
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
The peoples republic of California is run by the un-elected pencil pushers that have their little feifdoms for the benefit of the aforementioned pencil pushers.
What they do doesn't have to make sense. If you ask... it's because they say so. |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
You can use the 87-91 saddle tanks with the baffles and senders with fuel pumps as high volume low pressure lift pumps and a fuel pump on the frame rail to push the pressure up to LS specs. You'll need to upgrade the NL2 dual tank valve to the motorized Pollack valve. The NL2 wiring and switch will need to be updated to the 1987-91 TBI setup using the fuel system power wire from the LS ECM in place of the same from the TBI ECM. This allows you to keep your 40 gallon capacity with two tanks.
The LS ECM should cut fuel pump power as soon as the engine stops so... as long as you're switching the fuel pump power with the ECM you don't need the oil pressure switch as a safety system. The 1987-91 Emissions and Driveability books in my manuals thread have detailed information on how the power feed from the ECM feeds the fuel pump relay and the NL2 valve power. Look up the Dual tanks theory of operation thread for more information as well. Several European and US automobiles use the in-tank HVLP lift pump to HP fuel pump scheme for fuel supply. The TBI pumps will push significantly more volume GPH or GPM at lower restriction/pressure. When tanks without baffles are your only option you can put a submersible LS fuel pressure pump in a slosh can with feed and return to-from the tanks and to-from the fuel rails. It's not needed with the 87-91 TBI fuel tanks. |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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The rest of the LS version of the EVAP system is fairly simple. If you weren't in the Peoples Republic of California you could bypass the EVAP readiness test and plumb the less expensive components from the 1970's evap canister setup to the purge valve. It would work just as well as the LS system but your overlords have no doubt decreed you shall use the LS motor evap system or else... off with your head...:lol: |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
This is why I will not put an Ls in my '91 suburban. I'll go 383 or 400. They have no idea what's under the valve covers. As long as it passes visual and emissions I'm golden
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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1) no car engines (good bye plentiful Camaro 6.2/6L80e) 2) no "E-rod" conversions. Then I found out about the class 1 (<6.5k GVWR), 2a (6k-8.5k) & 2b (8.5k - 10k) My truck happens to be a non-CA R30 (1-ton dually C30 for 89) So, now I'm trying to figure out what more modern (but as said above "not too modern") trucks came with either a 6.0 or 6.2 along with a six speed automatic that will meet the GVWR criteria for the class 2b (8.5k-10k lbs GVWR). I have another call into my local smog ref and hope to pin down some more info. Though it doesn't help to whine about it, I am still amazed that I can't swap a much cleaner burning more modern engine/tranny and pull out the TBI 454, but "oh well". Funny thing is that it is the GVWR that is going to cost me a bunch of money and time and the only thing that I will tow is my woman and a couple of German Shepherds!! |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
Very good write up! That takes some dedication to get it right! Thank you for posting OP.
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
EricU, what year is your truck?
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Praying this passes. Our 82 k5 would be 2000% easier
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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But I don't think that it will happen this time. From the inner-web: Legislation (AB 210) introduced in California to exempt motor vehicles manufactured prior to the 1983 model-year from the state’s biennial emissions inspection requirement failed to be considered prior to the legislative deadline for “two-year” bills. By rule, bills in California that are carried over from the previous year, also known as two-year bills, must be passed by January 31. Since this did not occur, the bill is dead for the legislative session. |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
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And my power choices for this pos K5 would open up dramatically |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
Well my current plan is;
1) Wait to hear back from my local smog Ref to dial down exactly what my options are. 2) Hopefully find a compliant 2wd 6.0 or 6.2 with a six-speed automatic combo that fits in my GVWR window (8.5k - 10k) that I can start searching for a relatively low mileage one to purchase out of wrecking yard (how hard could that be???:confused:) 3) Get the OP Steve Van Gent, who is "only" three short hours north of me to come down for the weekends to help sort out the wiring BS. |
Re: SMOG LEGAL ENGINE SWAP TO LS yesterday passed!
Dedicated work and great write-up. Nice job SVG.
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