[lt4camaro]

Originally Posted by KingLT1

I dropped .5 alone with a tire change. I gained more from that mod then all of the others combined in the 1/4 mile when I was NA.

Mods were: Pray ported IM/TB, CA cat deletes, Rotofab dry, flex sensor. Best street run bone stock was a 12.4. Then dropped to a 12.0 with mods above still on stock run flats. Switched to 305/35/20 555r DR's and went 11.5... and it would do it all day. Gear and converter are the last mods I would do unless its a Head/Cam car with a Ported MSD or Hiram.

Nope...all transmission parameters are located in the TCM which is currently untouchable for 2020+ and HPtuners has said they have no plans to support it.

You mentioned flex sensor, does that mean you were on E85 when you dropped to 12.0? along with your other mods? . You also mention cat deletes, are you referring to the mid pipe with the unmonitored secondary cats?. Can the 2020 AFM be tuned out to help the torque converter issue on the A10 cars.

[KingLT1]

Originally Posted by lt4camaro

You mentioned flex sensor, does that mean you were on E85 when you dropped to 12.0? along with your other mods? . You also mention cat deletes, are you referring to the mid pipe with the unmonitored secondary cats?. Can the 2020 AFM be tuned out to help the torque converter issue on the A10 cars.

E85 and CA bolt-in delete pipes the remove the primary cars and retain the secondary.

AFM is controlled in the ECU so yes it can be turned off. However I don't believe A10 cars have converter issues.

[lt4camaro]

Originally Posted by KingLT1

E85 and CA bolt-in delete pipes the remove the primary cars and retain the secondary.

AFM is controlled in the ECU so yes it can be turned off. However I don't believe A10 cars have converter issues.

Cannot get away with primary cat delete here in Connecticut, visual inspection during emission tests, they have to be in place. No issue on the secondary cats that are unmonitored. Did GM make or design a different torque converter for the A10 compared to the A8. I understand the torque converter really doesnt like to do what it has to do when the car decides to go from V8 to V4 mode. Best thing I know to do is to put in regular lifters in the LT1, delete the AFM mechanicals and tune out the activation

[KingLT1]

The secondary cat removal does little to nothing for power gains. Majority of the power gains even when doing headers comes from deleting the primary cats. Either way, I am not sure how you wouldn't pass visual inspection as long as the secondaries are in place. They look like cats and if you have the ECU tuned then you should pass testing.

The A10 is tuned completely different then the A8...it doesn't suffer from the same issues. Aside from that, You have to change the camshaft in order to delete AFM on the LT1.

[wnta1ss]

As far as dragstrip improvements from just a few modifications, I have some experience with my SS/A8. When it was bone stock, I ran 12.06 on the dragstrip. Adding drag radials on the back put me in the high 11s. Then tuning the ECM with a flex fuel sensor, tuning the TCM, and using E85 made a big difference. I also had added a couple of mods that did nothing, namely a V-Max PTB and a drop-in air filter. Jannetty Racing confirmed in his testing what I had seen, zero power gain, just to let you know not to waste your money on either one of them. Anyway, with that small mod list, I then ran 11.34 on the dragstrip. The trans tune was a very important part of it, which is why I would stay away from the 2020 automatic if you want to mod it for drag racing.

[lt4camaro]

Originally Posted by wnta1ss

As far as dragstrip improvements from just a few modifications, I have some experience with my SS/A8. When it was bone stock, I ran 12.06 on the dragstrip. Adding drag radials on the back put me in the high 11s. Then tuning the ECM with a flex fuel sensor, tuning the TCM, and using E85 made a big difference. I also had added a couple of mods that did nothing, namely a V-Max PTB and a drop-in air filter. Jannetty Racing confirmed in his testing what I had seen, zero power gain, just to let you know not to waste your money on either one of them. Anyway, with that small mod list, I then ran 11.34 on the dragstrip. The trans tune was a very important part of it, which is why I would stay away from the 2020 automatic if you want to mod it for drag racing.

So A 2019 SS A10 would be better than a 2020 LT1 A10. Yes, I realize adding the flex fuel sensor and tuning for E85 is a big difference... Thanks for your input bud.

[wnta1ss]

Originally Posted by lt4camaro

Yes, I realize adding the flex fuel sensor and tuning for E85 is a big difference... Thanks for your input bud.

Even if you skipped the E85, just adding the drag radials, ECM tune, and TCM tune could get the .5 second improvement that you were seeking. Since I was running 11.3 with E85, then 11.5 would have been no problem if I had tested it with 93 at that time.

[MVPxD]

What is the ratio list for the M6?

Originally Posted by Msquared

This is an important point. The full ratio list for the A10 with V8 is:

1. 4.70
2. 2.98
3. 2.15
4. 1.77
5. 1.52
6. 1.27
7. 1.00
8. 0.85
9. 0.69
10. 0.64

That means that whereas the M6 and most traditional setups reach 1:1 in 4th gear, this A10 isn't there until 7th gear. I don't think changing to a 3:73 would be the way to go, even if it were easy to do. 1st gear would be so steep that it would just spin the tires, unless maybe one were on true drag slicks. The A8 is kind of similar, to the A10 in this way, not reaching 1:1 until 6th gear.

[arpad_m]

Originally Posted by MVPxD

What is the ratio list for the M6?

See the complete Camaro transmission "data sheet" here: https://www.camaro6.com/forums/showthread.php?t=584316

[Kemo Savy]

Originally Posted by Ron2ss

Just for reference: My A10 SS build sheet lists the axle ratio being 2.77.

2:77????

[Ron2ss]

Originally Posted by Kemo Savy

2:77????

Never said 2:77, I said 2.77, what is it that you are questioning?