Yeah, same dowels. I'm leaving the box on till I know what it's for . If it doesn't plug into the wiring harness I'm getting rid of it. Going to do a bit of research to see if I can figure out what it's for. No problem. I'd like to provide as much info as I can. I've still got about 6" of clearance from the bottom of the pan. Bart
Is that deep pan absolutely necessary? The THM400 also could use a pan about an extra inch deeper, but it was optional. And not suitable for a car, in my opinion. Check if your slip type output shaft has an O ring for the yoke. That will determine what kind of yoke is applicable. Bruce Roe
That thing should be a gear sensor. OEM's use the gear position for all sorts of things. Cruise control, Torque Converter lock up, idle control, EGR and Smog Pump control, and could be looped into other things as well. But I do not know if the aftermarket systems require it or not.
the input shaft deal on the 99 is if its only a 6.0 engine truck like the nbs. after 01 all will have the 6.0 but in 99-00 you had both.
I would not use a '99 up core for a retrofit. You are paying a premium price for a "LS" type core when you don't need the 12 o'clock bellhousing bolt position or even want it on a Buick retrofit. Any year core can be rebuilt to work well. The input shafts on 4L80E's remained the same when GM went to the LS engines, it did not change like the 4L60Es. The electronic box on the side is the manual level position switch. It could be used as a reverse light and neutral safety switch but is usually not necessary on a retrofit. If anyone is interested I carry a low cost controller that works very well. We use it for installs at my shop. I also have mechanical speedo tailhousings for a more reasonable price.
on an allison transmission that is called nuetral safety switch and has to be timed with a computor like a distributor thats why the back bolt hole is elongated. if not it wont ever hit low gear.. learned this the hard way doing driveway side work...not sure if this applies to the 4l80e though. good luck
This project has been on hold since last fall. Now that spring has finally come to New York the project will pick back up. Parts are being ordered within the next few weeks. First being a internal regulated alternator. Also, I now have a garage to keep it in.
There is a controller called Optishift that is reasonably priced. $450.00 plus $140.00 for the harness. They have a website. Bob H.
I'm expecting a new sfi flexplate from J.W. Performance next week. Also, placing a order for an internal regulated starter. I could really use help from someone with access to Jegs pro-shop in the coming months!
This is a slow going project, but that was to be expected. I've now got the car to my house instead of storage, and working to get the garaged cleaned up so I can get the car inside. I think I damaged the accelerator pump on the transmission when I bolted it to the motor... Can't make up my mind on the use of the original wiring harness in the car or if it would be smart to get a new one from Painless. Leaning toward a new one since I plan on doing other upgrades.
