iamdub
Full Access Member
Yeah, that's the big boy. I believe it's stock for the 6.2 Tahoe and included in the heavy duty cooling package for the 5.3 Tahoe.
6.2 swap thread
- Thread starter ls1frc
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Yeah, that's the big boy. I believe it's stock for the 6.2 Tahoe and included in the heavy duty cooling package for the 5.3 Tahoe.
I've got the HD cooling (KL5 I think). So engine oil cooler and trans cooler in radiator plus the aux factory trans cooler.
My stall is just a redone GM converter with 1800 stall... so less than the ZL one
And I have the B&M Deep trans pan... I don't know if i'm just getting too much heat from the water to air intercooler or what???
But my trans temps (non towing) are higher than they were bone stock.. So maybe trans tuning will help or maybe I just have
something f'ed up in trans maybe?? Since I did it all at once, It's hard to pin point
I'm not sure, but your trans is a built circle D trans so it's apples to oranges with mine. I am a member of 6l80etuning.com, I pay the $99 annually to access his knowledge.
He specifically mentions if you have a Circle D trans, DO NOT touch the shift pressures. Since it sounds like you were not happy with your tune, I wonder if the shift pressures got messed with.
"From the above you can see I change most pressure values to match a 2010 CTSV. I then add 20 psi to Max Pressure, and set Max Pressure B/Max Clutch to 300 psi. I set Max Line Pressure in gears 1-4 to 279 psi. I max out the last two cells for all Base Shift Pressure Upshift pattern modes. Do Not do this on the latest generation of Circle D transmissions, leave them stock. The latest internal mods only require you run stock pressure. You will need to check with Circle D to see if you can run these values. For downshifts, I add 40 psi to the Power cells only. For CTSV, Corvette, and Camaro Tunes, you can set all Base/Oncoming/Offgoing pressures and Volumes to mirror a 2010 Base CTSV tune see (TUNING FILES). Again, check with Circle D before you do this. You can try it on the G8, Escalde, and Trucks, but they seem to be real finicky."
Spent a good 2 hours tuning today. My idle/drivability was really funky. I'd get horrible cold starts and random idle surges.
I decided to start from scratch and just copy over every Idle tab table from a stock L94 6.2 tune.
Flashed the tune, truck started right up and idled perfectly with no adjustments.... Tweaked it some and it's driving perfectly now.
I also ordered a 3" Walker quietflow muffler. I am hoping I can pair this with my existing Corsa pipes so I can remove my rusting out OEM 2.75" exhaust.
Oh yeah, spent $150 on detailing polishes/washes/towels. I haven't detailed in years, but it's time to make the truck look as best as it can look. If I am gonna justify doing this 6.2 swap over buying a new truck, it has to look good too lol.
I decided to start from scratch and just copy over every Idle tab table from a stock L94 6.2 tune.
Flashed the tune, truck started right up and idled perfectly with no adjustments.... Tweaked it some and it's driving perfectly now.
I also ordered a 3" Walker quietflow muffler. I am hoping I can pair this with my existing Corsa pipes so I can remove my rusting out OEM 2.75" exhaust.
Oh yeah, spent $150 on detailing polishes/washes/towels. I haven't detailed in years, but it's time to make the truck look as best as it can look. If I am gonna justify doing this 6.2 swap over buying a new truck, it has to look good too lol.
Do you think that shift pressures being too high would cause all the extra heat.???
Even today on a 30* day, i'm running about 160-190 trans temps while my
coolant temps are steady at 185* ish
Yes, pressure needs to be stock with circle D trans. Pull that tune so I can look at it.
That trans temp is too high considering the ambient temp. It was 45 out today. I drove all day today and never got over 139.
From their website
"Auxiliary Cooler You need to install a stacked plate auxiliary transmission cooler (not a tube & fin style cooler) rated for 25,000 GVW. The ideal operating temperature for this transmission is 180°or less. These transmissions have a tendency to run very hot – the cooler will lower operating temperature and recovery time which in turn will extend the life of your transmission."
Run a few tanks of gas through it so far. No issues other than the leaking radiator.
I still get a very short clacking at very cold starts. It's only a split second now vs a full minute before. Maybe there's still a tiny bit of air trapped inside.
I read that the A/C delco basic filters have subpar anti drainback valves, so the theory is oil is slowly leaking back down over night. I bought a fram ultra filter which has a much better drainback valve. It's nothing like the ****** old fram cardboard filters.
I'll see if that helps alleviate the issue.
I still get a very short clacking at very cold starts. It's only a split second now vs a full minute before. Maybe there's still a tiny bit of air trapped inside.
I read that the A/C delco basic filters have subpar anti drainback valves, so the theory is oil is slowly leaking back down over night. I bought a fram ultra filter which has a much better drainback valve. It's nothing like the ****** old fram cardboard filters.
I'll see if that helps alleviate the issue.
Hahaha the quiet flow muffler necks down to literally, what appears to be, 1 inch or less inside. Going right back to amazon.
I bought another vibrant ultra quiet resonator. I am going to weld that in in the factory resonator location on the Corsa. So it will be...
Headers -> ultra quiet -> Corsa touring -> ultra quiet -> tip
The one ultra quiet got me 80% there. Eliminated all rasp, but it still got a little bit too boomy at 2k rpms which is annoying as a family hauler, so the stock exhaust has been back on. But the flex joint will fail any day now, so I want to be proactive.
I bought another vibrant ultra quiet resonator. I am going to weld that in in the factory resonator location on the Corsa. So it will be...
Headers -> ultra quiet -> Corsa touring -> ultra quiet -> tip
The one ultra quiet got me 80% there. Eliminated all rasp, but it still got a little bit too boomy at 2k rpms which is annoying as a family hauler, so the stock exhaust has been back on. But the flex joint will fail any day now, so I want to be proactive.
Put the 3" Corsa touring back on that has a Vibrant resonator after the y-pipe.
It sounds a lot better with the 6.2. The boomy sound I had with the 5.3 went away, now there is zero drone. Sounds insane at WOT and just put puts around at lower RPM.
It sounds a lot better with the 6.2. The boomy sound I had with the 5.3 went away, now there is zero drone. Sounds insane at WOT and just put puts around at lower RPM.
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