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oldman · 01-14-2018, 10:44 AM

Just thinking about this, GM already the eDiff center carrier that is listed at 9.9" that bolts into the 6th gen. I going to assume that it has the exact center unit (the one the ring bolts to) aka "diff" size spec as the gen 5 ZL1, basically I'm saying it should be possible to get a junk yard eDiff off a 6th gen and swap in the gen 5 mechanical LSD unit (since none of know how the 6th gens actual eDiff works via computer control).

Note I'm talking about the actual posi unit = differential.

I sure hope GM just sells the gen 6, 9.9" carrier with torsen diff.. would fix a lot of issues.

My issue at looking at the 5th gen carrier, it is aluminum, while the 6th gen's carrier is multiple parts, the center snail is cast iron. IMO GM did this for strength. The steeper the gear the weaker the gear set due to less contact area as the pinion gets smaller. I think any upgrade really need to either keep the new 6th gen carrier case or all a bolt in upgrade to the 9.9" with mechanical diff.

01-14-2018, 10:44 AM	#14
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,346	Just thinking about this, GM already the eDiff center carrier that is listed at 9.9" that bolts into the 6th gen. I going to assume that it has the exact center unit (the one the ring bolts to) aka "diff" size spec as the gen 5 ZL1, basically I'm saying it should be possible to get a junk yard eDiff off a 6th gen and swap in the gen 5 mechanical LSD unit (since none of know how the 6th gens actual eDiff works via computer control). Note I'm talking about the actual posi unit = differential. I sure hope GM just sells the gen 6, 9.9" carrier with torsen diff.. would fix a lot of issues. My issue at looking at the 5th gen carrier, it is aluminum, while the 6th gen's carrier is multiple parts, the center snail is cast iron. IMO GM did this for strength. The steeper the gear the weaker the gear set due to less contact area as the pinion gets smaller. I think any upgrade really need to either keep the new 6th gen carrier case or all a bolt in upgrade to the 9.9" with mechanical diff. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.