[Terrellford12]

Just what the title says anyone did it yet without getting a cam or F/I

[Cdflyer]

It always depends on driver. Stock to stock, it's a drivers race. Even a stock A8 vs a cammed M6 it's still a drivers race.

[hotlap]

Originally Posted by Cdflyer

It always depends on driver. Stock to stock, it's a drivers race. Even a stock A8 vs a cammed M6 it's still a drivers race.

What if drivers have equal skill? Only the top 5 (of 20) from the M6 fastest list would make the A8 fastest list. The average A8 is 0.266 sec faster than the average M6. It's a lot easier for an average driver in a A8

Average 60' time are...
A8 - 1.868 sec
M6 - 2.042 sec
delta = 0.174 sec

Average 1/4 time are
A8 - 12.172 sec
M6 - 12.438 sec
delta = .266 sec

[Snowblind]

What's needed for the M6 to beat the A8 ?

Great question; I think what you are trying to ascertain is how to equal the two instead, right?? They both have the same motor with the same output.

The M6 has 2 small advantages over the A8 going for it, a weight savings of about 40 lbs? and no slippage of a torque converter.

The disadvantages are also 2 things; humans can not shift as fast as a computer and the the gearing is not optimal.

Equipping the M6 car with a 4:30 differential will give you an effective first gear ratio close to the A8 to close the 60' gap and it will also let you run it out to 121@6500 in 4th gear (on stock tires).

[Richard0nee]

Originally Posted by Snowblind

What's needed for the M6 to beat the A8 ?

Great question; I think what you are trying to ascertain is how to equal the two instead, right?? They both have the same motor with the same output.

The M6 has 2 small advantages over the A8 going for it, a weight savings of about 40 lbs? and no slippage of a torque converter.

The disadvantages are also 2 things; humans can not shift as fast as a computer and the the gearing is not optimal.

Equipping the M6 car with a 4:30 differential will give you an effective first gear ratio close to the A8 to close the 60' gap and it will also let you run it out to 121@6500 in 4th gear (on stock tires).

Truth right there.

The biggest advantage of the A8 will be launch thus the 60ft (And lord knows how important that is). If you like to drag, get the A8.. way more consistent. From a roll they're about even although I seen a few vids with the M6 by 1/2 car.

A .2 sec delta difference is about right with equal drivers..

[ULTRAZLS1]

Originally Posted by Snowblind

What's needed for the M6 to beat the A8 ?

Great question; I think what you are trying to ascertain is how to equal the two instead, right?? They both have the same motor with the same output.

The M6 has 2 small advantages over the A8 going for it, a weight savings of about 40 lbs? and no slippage of a torque converter.

The disadvantages are also 2 things; humans can not shift as fast as a computer and the the gearing is not optimal.

Equipping the M6 car with a 4:30 differential will give you an effective first gear ratio close to the A8 to close the 60' gap and it will also let you run it out to 121@6500 in 4th gear (on stock tires).

According to the 2018 playbook I happened to notice the a8 cars are only about 10 lbs heavier according to GM.

Still don't know why we don't have a proper bolt on m6 car with slicks and axles doing a 5k clutch dump. That's what needs to happen and they should be right on par. With a gear and a good driver maybe even faster. But the a8 is hard to beat...

The manual mustang crowd is right with the autos. Don't know what the problem is over here. In time...

[Zepp]

The Auto should have less rear wheel HP (probably about 15rwhp) with more drivetrain loss too.

[Michigan1LTRS]

It can't be done. A8 is king!

[Fraxum]

Originally Posted by Terrellford12

Just what the title says anyone did it yet without getting a cam or F/I

Been here done this. But you can benefit from my experience:

1. Ported TB
2. Ported Intake
3. E85
4. Tune
5. Upper and Lower Trailing arms (in black)
6. And of course DRs

That is all you need. With DRs you have an 11 second car once you get enough seat time to launch and shift the car. I have added more parts than that, but if I had it to do all over again that would be my list. And I am tempted to take off the ported MSD and LTs and sell them. Then port my stock manifold and put that back on. I would only lose 15 rw looking at my dyno.

With those mods you can easily put the car back to stock and because it looks stock you will get no hassles from the dealer.

The above M6 vs Stock A8 with DRs = Drivers race. But you will have to be the one with more seat time.

[Fraxum]

Originally Posted by ULTRAZLS1

According to the 2018 playbook I happened to notice the a8 cars are only about 10 lbs heavier according to GM.

Still don't know why we don't have a proper bolt on m6 car with slicks and axles doing a 5k clutch dump. That's what needs to happen and they should be right on par. With a gear and a good driver maybe even faster. But the a8 is hard to beat...

The manual mustang crowd is right with the autos. Don't know what the problem is over here. In time...

LOL. You would also need to mod the suspension for better weight transfer. The diff might go next. I raced a coyote with a solid stock diff do it to get 1.5 60's. With just bolt-ons he is getting air under both tires. But I bet the good handling would be toast with the SS after the mods. Those older Mustangs already are not great handlers, so no big deal to them.

[ULTRAZLS1]

Plenty of the s550 mustang cars running 11.5 and under with just axles and shock absorbing bias ply slicks. Stock differential. Some even on stock suspension. 1.5-1.6 60 ft.
Just bolt ons.
I guess the differential could break... guess I've never heard they were weak though. Buts that's a manual. That's the game.
The diff could break in my car too just not as likely

I believe cdflyer in this very thread ran 12.0 with just a good tire. Stock otherwise. Broke an axle

[Fraxum]

Originally Posted by ULTRAZLS1

Plenty of the s550 mustang cars running 11.5 and under with just axles and shock absorbing bias ply slicks. Stock differential. Some even on stock suspension. 1.5-1.6 60 ft.
Just bolt ons.
I guess the differential could break... guess I've never heard they were weak though. Buts that's a manual. That's the game.
The diff could break in my car too just not as likely

I believe cdflyer in this very thread ran 12.0 with just a good tire. Stock otherwise. Broke an axle

the s550s are doing that too? Ford built them right then. I understand the SS diff is pretty sturdy, but pretty things do break. I haven't heard of one breaking. What I was told about the SS diff was the body is cast iron unlike the 5th gen v8 diif. I broke one of those.

I think but don't know that the ZL1 diff looks about the same as the SS although the Z and 1LE have the fancy electronics. If they are the same durability then maybe the SS is all good there. And of course Chevy suggests the 5th gen ZL1 diff if we need a 1,000+ RWHP boat anchor.

[Terrellford12]

Originally Posted by Fraxum

Been here done this. But you can benefit from my experience:

1. Ported TB
2. Ported Intake
3. E85
4. Tune
5. Upper and Lower Trailing arms (in black)
6. And of course DRs

That is all you need. With DRs you have an 11 second car once you get enough seat time to launch and shift the car. I have added more parts than that, but if I had it to do all over again that would be my list. And I am tempted to take off the ported MSD and LTs and sell them. Then port my stock manifold and put that back on. I would only lose 15 rw looking at my dyno.

With those mods you can easily put the car back to stock and because it looks stock you will get no hassles from the dealer.

The above M6 vs Stock A8 with DRs = Drivers race. But you will have to be the one with more seat time.

Finally someone with faith. I own an 6 speed. And my brother an two cousins have A8s. When I meant what's needed I was talking about bolt on wise.

[Joe's_cool_1le]

Originally Posted by Snowblind

What's needed for the M6 to beat the A8 ?

Great question; I think what you are trying to ascertain is how to equal the two instead, right?? They both have the same motor with the same output.

The M6 has 2 small advantages over the A8 going for it, a weight savings of about 40 lbs? and no slippage of a torque converter.

The disadvantages are also 2 things; humans can not shift as fast as a computer and the the gearing is not optimal.

Equipping the M6 car with a 4:30 differential will give you an effective first gear ratio close to the A8 to close the 60' gap and it will also let you run it out to 121@6500 in 4th gear (on stock tires).

Would you mind expanding on the changing the M6 differential to 4:30's? With my 1LE and supercharger 1st gear is pretty much a blow your tires off even when trying to moderately get on it. Is changing the differential difficult and/or pricey for the 1LE?