Another Gen6 LTI H/C SBE build w/ track times. 588/528rw
01-07-2018, 07:14 AM
#1
Another Gen6 LTI H/C SBE build w/ track times. 588/528rw I got another build finished up. This one has my STG 2 cam in it. Car is a 2016 Camaro 2SS A8.
The track pass was made in +100 DA with a 10-15 mph head wind. I was also having trouble getting the trans to take commands. There may be a rebuild in the future. I know the car had 10.20's in it. The best 60ft was 1.43 and the 10.45 is the H/C SBE Gen 6 record.
Mods:
My ported Heads
My ported MSD/TB
My STG 2 cam kit
Kooks 2" headers w/ stock cat back
Roto-fab w/ Dry filter
Circle D 4C
E85
My tuning
The track pass was made in +100 DA with a 10-15 mph head wind. I was also having trouble getting the trans to take commands. There may be a rebuild in the future. I know the car had 10.20's in it. The best 60ft was 1.43 and the 10.45 is the H/C SBE Gen 6 record.
Mods:
My ported Heads
My ported MSD/TB
My STG 2 cam kit
Kooks 2" headers w/ stock cat back
Roto-fab w/ Dry filter
Circle D 4C
E85
My tuning
01-07-2018, 09:49 AM
#4
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Damn pray! You're killing these LT1 builds!
01-07-2018, 09:51 AM
#5
TECH Senior Member
I thought LT1's were Gen 5...
01-07-2018, 02:23 PM
#7
Thanks guys. I am starting to get my H/C combo's dialed in.
For some reason no matter what I commanded I couldn't get the trans to shift before the limiter on the 1/2 and it was revving to 7K on the 2/3. That and the converter not locking till the top of 3rd was killing me. I had the mph in 1st all the way down to 18mph and the rpm down to 6K. All it did was cause a much longer slip time and it still wouldn't shift. Had it shifted the 1/2 at 6,600, the 2/3 at 6,700 and locked the converter on the shift to 3rd this thing would have rocked.
For some reason no matter what I commanded I couldn't get the trans to shift before the limiter on the 1/2 and it was revving to 7K on the 2/3. That and the converter not locking till the top of 3rd was killing me. I had the mph in 1st all the way down to 18mph and the rpm down to 6K. All it did was cause a much longer slip time and it still wouldn't shift. Had it shifted the 1/2 at 6,600, the 2/3 at 6,700 and locked the converter on the shift to 3rd this thing would have rocked.
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01-07-2018, 04:16 PM
#8
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I recently rented a 2018 SS camaro A8. I was overall impressed but I felt like it could really benefit from a solid transmission tuning.
01-11-2018, 04:20 AM
#15
The 6th Gens lose 3-4 mph once the converter goes in. I trapped 125 on the stock converter with bot ons. I dropped the 4C in and only trapped 121 a couple days later. And that was getting the converter to lock when it dropped into third. If you can't get the converter to lock till the top of 3rd or into 4th then you lose even more. We also have to remember that this car shifts 4 times in the 1/4 and with TM on it take about .4 sec per shift. Another big thing I have found is that you don't get the shift points correct for the 1/2 and the 2/3 you will drop ET and mph. If you over rev those gears the losses are substantial. I couldn't get this car to shift before the limiter in 1st and up near 7K on the 2/3. Both are well past what was needed. The other bid thing is that the converter wouldn't lock till the tip top of 3rd. It spent more time in 3rd trying to lock up then it did in 4th locked up.
I am not sure of the weight of this car but I would estimate that it is somewhere right around 3,800. My car is 3,840 and this one is the same model but has lighter rims and tires.
The dyno numbers I posted were in 6th. The car made 562rw in 5th. The car that I got the record from put down 545-560rw in 5th depending on the dyno. His car was under 3,600lbs and he trapped 104.4 in the 1/8 and 131 in the 1/4.
If you can show me some 6th Gens that are trapping higher or running quicker I would like to see them. I can post up my slips with DA and weight from my car once the converter went in if you like.
01-11-2018, 10:32 AM
#16
Im talking about unlocked 4L60es, Th400s, etc making 450-500rwhp at 3700-3800# going 10.30s-10.40s at 127-131 None had stellar 60 fts 1.31-1.42
Not 6th gens, Ive just seen alot of huge dyno numbers from them and they dont seem to run the numbers Id expect out of that. Every car loses mph when you put a converter in but gains ET big
Ive always seen if you need to lock the converter up to gain ET (who cares what the mph shows if its not accelerating faster) its too loose. Maybe go a little tighter on the converters because with so many gear splits the shift extension isnt falling way down like an undergeared 3 speed would and dont lock it at all. If all those shift events take so much time (thats 1.2 seconds your saying) seems super wasteful
Not 6th gens, Ive just seen alot of huge dyno numbers from them and they dont seem to run the numbers Id expect out of that. Every car loses mph when you put a converter in but gains ET big
Ive always seen if you need to lock the converter up to gain ET (who cares what the mph shows if its not accelerating faster) its too loose. Maybe go a little tighter on the converters because with so many gear splits the shift extension isnt falling way down like an undergeared 3 speed would and dont lock it at all. If all those shift events take so much time (thats 1.2 seconds your saying) seems super wasteful
In what car, with what transmission with what converter?
The 6th Gens lose 3-4 mph once the converter goes in. I trapped 125 on the stock converter with bot ons. I dropped the 4C in and only trapped 121 a couple days later. And that was getting the converter to lock when it dropped into third. If you can't get the converter to lock till the top of 3rd or into 4th then you lose even more. We also have to remember that this car shifts 4 times in the 1/4 and with TM on it take about .4 sec per shift. Another big thing I have found is that you don't get the shift points correct for the 1/2 and the 2/3 you will drop ET and mph. If you over rev those gears the losses are substantial. I couldn't get this car to shift before the limiter in 1st and up near 7K on the 2/3. Both are well past what was needed. The other bid thing is that the converter wouldn't lock till the tip top of 3rd. It spent more time in 3rd trying to lock up then it did in 4th locked up.
I am not sure of the weight of this car but I would estimate that it is somewhere right around 3,800. My car is 3,840 and this one is the same model but has lighter rims and tires.
The dyno numbers I posted were in 6th. The car made 562rw in 5th. The car that I got the record from put down 545-560rw in 5th depending on the dyno. His car was under 3,600lbs and he trapped 104.4 in the 1/8 and 131 in the 1/4.
If you can show me some 6th Gens that are trapping higher or running quicker I would like to see them. I can post up my slips with DA and weight from my car once the converter went in if you like.
The 6th Gens lose 3-4 mph once the converter goes in. I trapped 125 on the stock converter with bot ons. I dropped the 4C in and only trapped 121 a couple days later. And that was getting the converter to lock when it dropped into third. If you can't get the converter to lock till the top of 3rd or into 4th then you lose even more. We also have to remember that this car shifts 4 times in the 1/4 and with TM on it take about .4 sec per shift. Another big thing I have found is that you don't get the shift points correct for the 1/2 and the 2/3 you will drop ET and mph. If you over rev those gears the losses are substantial. I couldn't get this car to shift before the limiter in 1st and up near 7K on the 2/3. Both are well past what was needed. The other bid thing is that the converter wouldn't lock till the tip top of 3rd. It spent more time in 3rd trying to lock up then it did in 4th locked up.
I am not sure of the weight of this car but I would estimate that it is somewhere right around 3,800. My car is 3,840 and this one is the same model but has lighter rims and tires.
The dyno numbers I posted were in 6th. The car made 562rw in 5th. The car that I got the record from put down 545-560rw in 5th depending on the dyno. His car was under 3,600lbs and he trapped 104.4 in the 1/8 and 131 in the 1/4.
If you can show me some 6th Gens that are trapping higher or running quicker I would like to see them. I can post up my slips with DA and weight from my car once the converter went in if you like.
01-11-2018, 12:50 PM
#17
Im talking about unlocked 4L60es, Th400s, etc making 450-500rwhp at 3700-3800# going 10.30s-10.40s at 127-131 None had stellar 60 fts 1.31-1.42
Not 6th gens, Ive just seen alot of huge dyno numbers from them and they dont seem to run the numbers Id expect out of that. Every car loses mph when you put a converter in but gains ET big
Ive always seen if you need to lock the converter up to gain ET (who cares what the mph shows if its not accelerating faster) its too loose. Maybe go a little tighter on the converters because with so many gear splits the shift extension isnt falling way down like an undergeared 3 speed would and dont lock it at all. If all those shift events take so much time (thats 1.2 seconds your saying) seems super wasteful
Not 6th gens, Ive just seen alot of huge dyno numbers from them and they dont seem to run the numbers Id expect out of that. Every car loses mph when you put a converter in but gains ET big
Ive always seen if you need to lock the converter up to gain ET (who cares what the mph shows if its not accelerating faster) its too loose. Maybe go a little tighter on the converters because with so many gear splits the shift extension isnt falling way down like an undergeared 3 speed would and dont lock it at all. If all those shift events take so much time (thats 1.2 seconds your saying) seems super wasteful
The conditions for sure weren't in my favor. Had the trans done what I wanted and we were not into a 10-15mph head wind I would have been in the 10.20's at 132+. This car was by no means totally lined out. and with a 1.45 60ft the time isn't all that bad.
The converters in the A8's make a nice 60ft but you only get a tenth or two out of them due to the loss of mph and all of the shifting. Not to mention if you leave TM in the car. With TM on you can see up to .6 from power off to power on. Plus this transmission lets one drum go before it puts the other drum on. So you have a pretty big time of converter slip between shifts. I was doing 1.57 60fts on the stock converter running 11.0's-11.1's. I dropped the converter in and went to 1.44-46 60ft's but only went high 10.8's to mid 10.9's. With how tight the gears are and how many shifts there are you have to get the converter locked in second. You are basically past peak hp from 1st-3rd with the converter unlocked. That is where your loss comes in.
01-11-2018, 01:06 PM
#18
7 Second Club
Pray is A O K !
