Ok guys I got a couple questions, I recently got ... Yet another 5.3 and a 4l80e which I believe is the later model but not sure. I was also told this particular 4l80e came out of a diesel pickup but not sure whether it was 2wd or 4wd. Just wondering if what I have in mind will actually work. Now for the confusion

Ok first pics are of my motor I'm planning to put in front of said 4l80e. It's a 5.3 out of a 00 Tahoe 4wd (not sure that matters but for informations sake there it is lol) it does have the dished flexplate







Now for the 4l80e I got but have no idea what year or what it's out of.













And my questions. Will the stock 00 Tahoe computer control this style 4l80e with the conversion on lt1swap and instead of buying a flexplate and bolts and a converter could i just use one of these spacers (because I already have one) by just drilling out my 5.3s flexplate adapter holes. (Which I read is possible in the stickies above)




Thanks in advance as always guys.

 

Not sure about the reusing of the flex plate with spacer. You have a late model 4l80e because the cooler lines are spread apart and the it has the rear line feeding the center support. That spacer looks nothing like the LQ4 spacer they used for the 4l80e flex plate. I would say your best bet would be to purchase a 4l80e flexplate with spacer and that should work just fine. Your PCM will control it, however you will either have to segment swap in HPtuners, or change the vehicle to something that came factory with a 4l80e. I swapped from 5.3 4l60e to 6.0 4l80e, and ended up just reburning my 411 pcm to a 2002 silverado 2500 as it was less complicated because my original program was 1999 silverado. The wiring changes are very basic, but you will need to repin the PCM for the new speed sensor. Tons of data floating around online.

Not to mention the 4l60e torque converter bolt holes are way different than the 80e, unless you had a conversion converter.

 

You can get that to combo to work, but it really depends on what converter you plan to run. If properly for for the swap, you will not need the pilot extender you have - it can be built into the converter.

Chris

 

Honestly for now I plan on using the stock converter. Basically it's a goal of mine to have 2 el caminos done by September so me and my dad can cruise to drag week (not to participate just for the experience, my dads not getting any younger haha) I saw a video on YouTube (great reference huh?) where a guy states that the pilot extender and making the holes from the FP to the TC a little wider is all you need


Or would something like this work better? Keep in mind I already have the pilot extender but I was curious about only having the three torque converter bolts and not all six. Would something like this work better for a stock 5.3 to a stock 4l80e while on a //building two cars\\ budget