4L60E to T56 tune, where to start?
11-21-2012, 08:55 AM
#11
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Ok I had done this so I got ahold of HP tuners folks and the "segment" swaps can be done only on vehicles that had the different transmissions available, Meaning you cant swap a T56 segment into a truck since it never existed. If you had a auto in a Camaro they could swap because it was available. The PCM has to be sent to HP Tuners if I understood correct.
I did like most others and just turned off the codes, the latest HP tuners has a switch to go from auto to Manual I also swapped that out. I am still working on some bucking and surging problems in my tune and dont know if it related or not.
I will PM 1969 for his to compare mine too.
Mine is a boosted 5.3 t56 in my 68 pickup...
I did like most others and just turned off the codes, the latest HP tuners has a switch to go from auto to Manual I also swapped that out. I am still working on some bucking and surging problems in my tune and dont know if it related or not.
I will PM 1969 for his to compare mine too.
Mine is a boosted 5.3 t56 in my 68 pickup...
11-21-2012, 07:05 PM
#13
Ok I had done this so I got ahold of HP tuners folks and the "segment" swaps can be done only on vehicles that had the different transmissions available, Meaning you cant swap a T56 segment into a truck since it never existed. If you had a auto in a Camaro they could swap because it was available. The PCM has to be sent to HP Tuners if I understood correct.
I did like most others and just turned off the codes, the latest HP tuners has a switch to go from auto to Manual I also swapped that out. I am still working on some bucking and surging problems in my tune and dont know if it related or not.
I will PM 1969 for his to compare mine too.
Mine is a boosted 5.3 t56 in my 68 pickup...
I did like most others and just turned off the codes, the latest HP tuners has a switch to go from auto to Manual I also swapped that out. I am still working on some bucking and surging problems in my tune and dont know if it related or not.
I will PM 1969 for his to compare mine too.
Mine is a boosted 5.3 t56 in my 68 pickup...
Did you wire the transmission range switch to make the PCM think it was in a particular gear?
11-22-2012, 07:42 AM
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Once I get mine figured out I will let you know. Currently I am making sure all my timing tables match. and I am going to disable the dfco to try that.
Mine only seems to do this at low speeds and no load. I may be compounding it because I have 3.73 gearing that is pretty high for a T56. I have worked on my ve tables and lowered the values in the idle range because it was so rich. I have them smoothed but will also look at that to make sure I am not making big transitions. I have checked and am not but will look again.
Mine only seems to do this at low speeds and no load. I may be compounding it because I have 3.73 gearing that is pretty high for a T56. I have worked on my ve tables and lowered the values in the idle range because it was so rich. I have them smoothed but will also look at that to make sure I am not making big transitions. I have checked and am not but will look again.
Last edited by custom 68; 11-22-2012 at 08:00 AM.
11-22-2012, 10:31 AM
#19
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I would do a segment swap for a 5 speed truck, the pcm doesnt care 5 speed or 6 speed. All the 5 speed trucks I have seen were all 4.8's but thats easy to swap to a 5.3 or 6.0. The main thing is you will have the right DTC's and the pcm wont do any weird things with TM with everything zero'ed out if you leave it auto. I used to just turn off all the trans DTC's when we put th350,th400 or glides into camaro's. In my personal car I have had 6 motors and 3 different trans combo's. I left it an auto for in the pcm for years and then out of no where started having alot of weird timing issues. I flashed the same tune over to a manual and never had a single issue again.
11-23-2012, 01:33 AM
#20
Can someone explain to me how a tune with a T56 segment and one with a 4L60E segment differ? With the EFILive demo, I have looked through a stock T56 f-body tune and a stock 4L60E silverado tune, and they look identical, same options/parameters for everything. The values vary obviously, but the f-body tune still has option to vary settings by gear/park/neutral.