Geartrain noise in 4L60E second gear causing "knock" retard

[EagleMark]

The weirdest part of it all is sometimes it will retard the timing and other times it won't.

Sure it's not Cat protection?

That log picture 3 looks like it may be trans torque reduction for shift?

[Fast355]

Sure it's not Cat protection?

That log picture 3 looks like it may be trans torque reduction for shift?

Cat Protection is Disabled along with EGR.

Torque management on 1-2 and 2-3 are both set more than stock at 40%. I had it at 50% reduction from stock, but with over 400 ft/lbs of torque in front of it the weak 4L60E was slipping between gears even with elevated line pressure, a transgo HD2 shift kit, and Corvette Servo. I put it back stock and I still didn't like the feel. I then put in more torque management and it really cleaned up the shift.

Look at the KR though in the 3rd picture it is 5.1*. Picture 1 was a 2nd gear pull running the Ramjet spark map and it peaked less than 1* at 4,800 rpm. Picture 2 has me less than 1* retard as well. The 4th picture is showing the stock timing map setting of 21* creating more than 8* knock retard! I am not even sure how that is possible at 11.8:1 air/fuel ratio.

[EagleMark]

Correct me if I'm wrong but torque management shows up as spark retard? Have no idea how you get more retard from less timing?

[Fast355]

Correct me if I'm wrong but torque management shows up as spark retard? Have no idea how you get more retard from less timing?

Torque management shows up as spark retard, but it does not show up as Knock retard. Notice the sharp dip on the upshift back to around TDC.

[Fast355]

So I remembered something that I ran across years back on a different swap. The 96-02 L30 305 Vortec and OBDII LT1, LT4 and L99 engines all use the same knock sensor and it is different than the 96-02 L31. At this point I am thinking of swapping to the L30 knock sensor or properly torquing it to 14 ft/lbs. I seem to remember an overtightened knock sensor becoming too sensitive.

[EagleMark]

Over tightening will do it and ruin the knock sensor.

Strange how OBDI knock sensors match engine displacement? Can you compare a 305 cal/bin/tun and a 350 cal/bin/tun? In EFI Live there's a ton of Knock sensor settings.

What's a HP Tuner file extension?

[Fast355]

I believe they are .BIN files. That being said I have a EFI Live .TUN file for both the 305 and 350 Express vans.