VINCE

iTrader: (1)

If both are on their game which would be faster in all honesty?

Frost

iTrader: (45)

Likely the auto, the 6speed will have to deal with re-spool at gear change from blowoff

hellbents10

iTrader: (10)

Unless you keep your foot to the floor when you shift with a 2 step and bang the turbo. Still I would put my money on the auto.

Tiago

iTrader: (27)

6 speed for sure. Auto will fall on its face on the top end.

the only advantage the auto has is in the 0-60 mph or so...

99Z28LS1

iTrader: (4)

qqwqeqwrqwqtq

I would say 6-speed especially because from my experience a race starting at 40 usually doesn't stop at 160.

Vetal

iTrader: (3)

It is nightmare to setup manual car with reasonably big turbo not to fall on it's face during shifts. Or maybe it is just my retardness. Although I'm leaning towards first option

Zombie

iTrader: (2)

Auto usually wins, area under the curve and average HP.

A stalled auto will put more average HP to the ground due to losing less RPM between shifts (rpm extention keeping the motor around peak HP) and not dropping off boost between shifts. Don't forget you just about eliminate the chance of missing a shift.

I've had a 6spd in my car and now a th400, there is no comparison, the TH400 is MUCH faster even from a roll. I dunno why people think autos don't have top end pull lol

Zombie

iTrader: (2)

My 3 speed lets me get to 185mph, have to change to 28's to go faster
2.75 Rearend F T W !

ocdwill

at the track.....ill give it to the auto....on the highway the 6 speed from a role..but we all know it is against the law to run on the street....right? and we would never do that...

ONEBADASSWS6

Stalled auto will not put more average HP to the ground, because when properly driven, a 6 speed with 4.10's will never fall out of the powerband either. It will always be within a few hundred RPM of the previous gear, meaning it stays in the powerband. The difference is the manual does it without slippage, and slippage means wasted energy. So the Manual will be more efficient and put down more power.

Chance of missing a shift is irrelevent. The comparison doesn't factor in driver error, its about what setup is better, all other things being equal.

The only disadvantage that the manual has is losing boost between shifts. The effect of that depends on the size of the turbo whether or not the driver is powershifting.

Zombie

iTrader: (2)

What 6spd trans are you running? On a T56 you will drop between 1500-2000 rpms on every shift, unless the clutch is slipping. Every gear change costs you power to the ground.

When I tell people I got rid of my 6spd for my 3spd auto people alway ask why and tell me how autos are slower, especially from a roll.

It's really hard to beat a good running auto car. I think autos have such a bad name due to dyno numbers. My highest a3 dyno to date is 470 RWHP, but I get a 3850lb behemoth to run 10.5's @ 130 with that dyno number.

P.S. I was a die hard 6spd guy previously. Behold the power of the darkside

will62085

iTrader: (4)

Powershifting

Shoulder Shaker

iTrader: (36)

yeah if you shift right you should be losing 2000 rpms between shifts.

Murdock

iTrader: (2)

To clarify: Axle's got nothing to do with it. With the ratios in a t-56 (2.66, 1.78, 1.30, 1.0), if you shift at 6600 (for example), 1-2 drops you to 4400 rpm, 2-3 to 4800, and 3-4 to 5100. Axle changes the mph it happens at, but not the rpm loss.

52172

iTrader: (2)

The six speed would rape the auto at high speeds. Especially since they usually don't end at 160. The six speed will pull like a freight train all the way to 200 and then some.

ShawnF

Murdock is absolutely right rear end gear is irrelevant. Beside the fact is that most turbo cars like more gear (speaking as a ratio and not numerically ie. 3.27 vs. 4.56) and they don't need it to get the car moving because turbos are load dependant and make a tremendous amount of torque once this load is established and the turbos are "spooled". Very few people that know what they are doing would ever have 4.10's in their car by choice. To answer the question the auto in my opinion would have a chance of being quicker because it has a constant load.

Incognito

Assuming both motors make the same amount of power at the crank... the 6 speed will win. Less drivetrain loss. Now if both rear wheel HP were equal, then I would give it to the auto.

cws T/A

iTrader: (3)

Less gears the better
http://home.comcast.net/~lowrider1998/ray197.wmv
449ci sbf / twin 88mm turbos / 2 speed

Silver02Z28

iTrader: (2)

Someone needs to find an A4 and M6 turbo car with close to equal rwhp, and race from a 40 roll. It shouldn't be too hard to find those cars in the same area. Post up a vid. My money goes on the M6.

I'm an M6. Anyone in the SD CA area with a turbo auto making about 425 to the wheels?