SILVER LS4

The only engine tranny combo in the '12 Impala will be a 302hp/262lbft (I've seen conflictin no.s, but that's most common) 3.6L V6, with a 6 spd transmission. That may give an LS4 a run for the money. Talking about a sleeper.

TheJPGXP

We know. I don't see it as a threat.

94ss06gxp

iTrader: (5)

maybe that 6 speed will be a good swap trans??!!

07carlocrusader

/\ yeah,...look at the "lbfts" up top its okay but no need to worry,.....when the caprice comes back its going to shut the Imp down but I think it will only be for the Police the 1st year or something to that effect?? I dunno,....

AlabamaGuy

iTrader: (5)

We will still have PCM/starter problems.

I'm not worried about it as the aftermarket support isn't there for it...not to mention the lack of tq.

SILVER LS4

You may not need as much torque with the 6spd.

AlabamaGuy

iTrader: (5)

But the torque we make spread out over a longer period of time will come out on top, more likely than not.

LS1 Racing

iTrader: (15)

Yup...This has been covered before in other threads. Stock for stock, the LS4 will be quicker.

A heads-up run from a dig probably sees the LS4 car grab a nice lead up to 50 or 60, where it runs into a wall because the motor just can't breath. This gives the 3.6 a chance to close the gap some, due to superior top-end breathing and better gearing from the 6T70 trans. In the end, I'll bet a stock LS4 is anywhere from two to four tenths quicker in the quarter mile, maybe more.

SILVER LS4

I think the ls4 hits a wall when it shifts out of 1st.

I would guess, that the new 302hp Impala should beat a mid 14 sec 271hp Honda Accord, making it a good race for a mid to low 14 second LS4.

And the '12 is rated at 30 mpg highway.

LS1 Racing

iTrader: (15)

I guess it depends on how you define "good race".

The cars will probably weigh roughly the same, though I would not be surprised if the 3.6/6-speed car weighed more than the LS4 car. After that, it comes down to torque and gearing.

Guess we'll have to wait and see!

TheJPGXP

My car doesn't hit a wall in second, third, though...

AlabamaGuy

iTrader: (5)

I don't run into this "wall" you speak of....2-3 will put me back in my seat...but then again, I'm not exactly stock.

xxtheshockerxx

my 2-3 is nothing spectacular i need more mods

SILVER LS4

There is a big gap between the 1-2 gears in most GM 4 speeds, mine incluede.