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  1. O

    411 Swap

    Let me clarify. Yes a mechanical issue affecting timing but the net result was retarded timing. I could tell that there was a timing issue right off the bat but did not know why. Now I know why. Not a clogged cat because that will not come and go but the guts are coming apart and rattling inside...
  2. O

    411 Swap

    OK something to put into your memory banks. The van would run bad and then run good back and forth with no apparent pattern. To make a long story short I was in the van with my hearing aids on and heard a faint exhaust rattle. Crawled under the van and the Cat was rattling. Bang on the cat and...
  3. O

    411 Swap

    OK this just keeps getting weirder and weirder. Had a busy week with the nonprofit I work for. One of the jobs took me near the repair shop of a friend of my son in law. I stopped by and he had a couple of minutes to plug in his professional grade scan tool and everything looks OK. HIs scan tool...
  4. O

    411 Swap

    I have a program from the OBD website on my old laptop. The one I use for all my car stuff. It has Mercedes and Beetle programs on it which is probably why it is constantly retching and hade to be replaced. When I put the LT in my Catalina I used a Howell wiring loom and they did a bench tune on...
  5. O

    411 Swap

    is there another kind on the market? The last I knew it was almost impossible to get a crankshaft from SCAT because there is a delay in getting crank cores from................you guessed it China. I have lost track of how many parts I have picked up from my local parts house with a US...
  6. O

    411 Swap

    I do apologize. If this information was previously offered I certainly missed it. All I kept seeing was you can't put more timing in it which I have positively determined is what it needs. OK back to the problem. Now I need to figure out how to use my obdlink mx +. I got it when we were setting...
  7. O

    411 Swap

    I have given up on the 411 swap. Apparently the engine trans combo that I have is unique and if there is a pinout sheet for my van I have not found it. So if I get into it and have trouble there is probably no where to go to find help. Unfortunately my go to guy for tuning can tune the 411 to...
  8. O

    411 Swap

    My guess is that you were jacking timing into a good running engine trying to get it to run better. I am well aware that it doesn't work. Been there done that have the burned pistons to prove it. I am talking about an engine that runs like **** and needs a lot of help just to get to OK. The way...
  9. O

    411 Swap

    OK I pulled a plug to get a tdc mark. Cut a hole in the top of the bellhousing and paint marked a tooth on the flywheel for a registration point. I now know what is happening I just don't know why. The engine is idling with about 20 degrees of timing, I am giving each tooth on the ring gear a...
  10. O

    411 Swap

    I am not talking a big jump in timing just around 10 degrees. If you drive something with a non computer controlled distributor back the base timing down 10 degrees and see how it runs, particularly under 12 to 1500 rpm. That is how my van runs. I am oooold school where we tuned to how it felt...
  11. O

    411 Swap

    I have been under the hood for over 65 years and the underlying problem is that it is late on the timing until about 2000 +. You can hear it in the engine sound. it is hitting on all 6 I replaced the spider with the newer style, new cap rotor wires and plugs no help. I will guarantee that it...
  12. O

    411 Swap

    I am sure that this information is in here somewhere but I haven't been able to find it. I have a 97 savana van with the 4.3 V6 that is the sorriest running thing I have ever owned. A month of crawling around on the internet has convinced me that the 411 swap is the cure. I have some questions...
  13. O

    411 swap

    Never thought about smog. The issue on these old vehicles is tailpipe emissions but they do plug the ECM into the state database and if the wrong computer id shows up the party is probably over. Having been putzing with cars for over 6 decades I can tell you without reservation that this thing...
  14. O

    411 swap

    From post dates it would seem as though I am coming to the party a little late. I recently purchased a 97 savanna cutaway van to build a mobile workshop for the volunteer work I do. It has the 4.3 V6 with the 4l60-E trans. I got it cheap and it does everything I need it to do...

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