So that's not too bad. I mean the car sits, you check it every so often, check it before you drive the car. I'm gonna get the 36" one to have some flexibility when installing/mounting it.
Yeah, you'll be ok with that one. Just keep track of how much ATF you put in. Depending on which converter you use, it will take around 12 quarts give or take lol.
If I were to do it again, I'd consider the shorter one. It would be a PITA to fill but I think it would allow for better readings.
okay so to wire get speartech harness and pin 22 and 23.
bang or cut that tunnel brace
lengthen the cooler lines
get a yoke
get a tranny mount
get a custom stall
1)now I have a tune in my PCM and do not have HPtuners how would I keep that tune and get my PCM to read the 4L80?
2) do I need a new crossmember if I am not connecting my torque arm to the trans anymore?
__________________ LQ4, 317 heads with 79cc chambers, 67mm butt mount, Motron 60#'s, Nasty performance fuel parts, 3.42's, stock tranny, Eaton posi, 1200HP W2A. AEM boost controller & wideband, truck coils, msd 8.5mm, 38mm tial w/15# spring, 50mm bov, UMI LCA's, UMI torque arm, edelbrock panhard Mods in progress: 4L80 on the way, EPP cam, patriot dual gold extreme springs, FAST 90/90, 2nd fuel pump, Devils stage 2 meth, 2 tunes
Doing my swap now. Flexplate arp bolts were wrong from speed inc but pretty sure they said flywheel bolts. We used some other ones maybe stock flywheel ones loctited of course.
Bit extra work on my 4l80 do to aps turbo kit. Had to slice bit off bellhousing on drivers side for downpipe clearance and do a bit of messing around for passenger side wastegate clearance. Just used minisledge for plug clearance. Stall is in there triple clicked of course used bungee to keep it in there. Doing this swap on garage floor. Got car up about 23 or 24 inches on bigger safety jacks and just enough to get trans under and using some floor jacks low profile one especially that buddy bolted on flat plate to.
With wood and safety jacks and the floor jacks things are going ok for installation and should have the trans final bolted in tommorrow.
Then will do the lsxtune harness. Have turbo 400 yoke that looks like will work might need conversion ujoint to go to my strange drivshaft which is 1350. Will order custom driveshaft over winter.
Already have hptuners tune for 4l80. Bmr crossmember seems fine ,torque arm relocation onto the crossmember. Had spohn tunnel mount but it sucked for ground clearance. Like this crossmember location better no ground clearance problems.
I don't think my stock 4l60 shifter has any switches on it for neutral or reverse lights??
If not then will think get 4l80 switch that goes on side of trans.Didn't look closely at shifter yet have to get it from other location next day or so.
Oh also cut the stock bellhousing bolts a bit shorter seem a bit too long. Unless mixed up the front bellhousing with rear bellhousing bolts from the t56.Gave some away with the t56.
Will of course check stall converter for proper play and yoke also.
Hoping to be auto and working within a week.
OK WHICH SHIFTER SELECT ARM DO I NEED HERE?? I went to tranny place and got 4l80 supposedly and 4l60 shift select arms and neither works right. the 4l80 was straight and bit longer than the 4l60 which had slight offset to it but is too short it looks like. So did this guy not really know what a 4l80 shift arm looks like? anyone have gm part number or pic of the 4l80 shift arm. I guess should maybe call up my trans builder and get one overnighted to me. Also looks like when guys took off my used 4l60 cable they wrecked the front where the ball goes in. So have to order a new shift cable it looks like from gm as looks like only gm dealerships can sell the newer gm parts nowadays.
Ok finally found another thread which think clears up the above shift select lever issue.
The search on here sure don't work well. Had to like google and got lucky.
I saw it work with the 4l60 shift cable, 4l60 cable bracket and 4l60 shift select lever.That car had long stud where selector lever goes. So now understand why that combo dont work on my car . my 4l80 has the short stud. So does the 4l80 shift select arm have enough offset to clear with the short stud? Anyone have a pic of the 4l80 shift select arm cant' seem to find pic of one anywhere.
I didn't get one with my tranny. tranny place gave me think 4l60 and mabye 4l80 but its straight no offset to clear the pan and don't work for me.
Can mguyver something but really would like to just get a proper shift lever and hook this stuff up and drive my car.
Used b and m shift arm bent it up and used bolt and nut not ball .Working ok. As everyone else did filed out holes in stock 4l60 bracket and both bolts bolted in on bottom of pan. No problem gettting gears.
Fired up car yesterday and had codes..Found out lsxtune harness didn't have a fuse! Put in fuse and that fixed the codes. Filled up trans..made mistake and got the short lokar..part numbers are confusing..anyway as said it sucks but can work. I ordered the longer lokar one now.
Drove car for first time around the block and not happy camper at all. No codes now but the speedo is super off. Like reading 60mph when it should read 20mph. And the trans is shiftting very weird ,if it shifts based off the speedo that explains it. Like going to think fourth at 20mph. And it is shifting hard at part throttle. I have to talk to guys at rpm that built my trans about that. Maybe can lower trans pressure. Supposed to have a street shift kit. I didn't go wot. I am getting horrible noises think from lugging engine when it goes to like 4th at 1000rpm.
So think first thing to do is figure out how to fix speedo.It was working perfect with my t56 ,tires size that put in and 3.54 gears in my dana 60. So why is it out to lunch on the 4l80 thought segment swap fixed any issues.
Someone please tell me how to fix this as think all my shifting problems are from this being out to lunch.
Tommorrow going to finish putting metel plate on trans tunnerl. Think use old 6 speed rubber pieces under the steel to seal things up a bit better. And put in my auto pedals. Thats pretty much concludes the swap ,ordered a 24 inch cylindrical dual pass filter to run up front above my air dam on frame. Not much room in front for conventional one with my big intercooler .Just looped the cooler lines for temp. Its cool up here anyway this time of year ,car will be going away in a few days for its winter sleep.
Not sure which dustshield to get yet..the metal one or the cast aluminum one.I have to likey tweak it a bit to clear my aps downpipe on drivers side and maybe my wastegate on passenger side. Think could dremel up the cast alumunum and the metal one likely would trim up nice.Decisions decisions...
Would like to report am happy with my swap but right now not that much.Also think the 4l80 whines pretty loud but as said have hold in floor and console is out of car.
And wasn't playing stereo.
I would go for ride tonite if can fix the speedo. I have gps to make sure my calibration is correct.
to the thread starter 
