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post #1 of (permalink) Old 05-31-2017, 01:48 PM Thread Starter
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I need a little more power

I have a 2007 Impala 3.9 its a nice runner but i think i can squeeze a little more juice out of it and adding more mpg would be nice, any suggestions
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post #2 of (permalink) Old 05-31-2017, 02:09 PM
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I suggest you buy a car with a 3.6L and massively upgrade it.

I've got nearly 100 more hp, and I want 100 more.
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post #3 of (permalink) Old 05-31-2017, 02:21 PM Thread Starter
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i already got the car, and its exactly what i want. i see there's tons of cold air intakes and exhaust options but very little notes of guaranteed power

07 LTZ Silver w/ Black
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post #4 of (permalink) Old 05-31-2017, 03:11 PM
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Originally Posted by dj92alx View Post
i already got the car, and its exactly what i want. i see there's tons of cold air intakes and exhaust options but very little notes of guaranteed power
I feel ya, and I tried.

You can gain about 25 hp with this car; CAI, cat back exhaust, tuning.

Your cost will be huge per hp.

I just took the other route.
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post #5 of (permalink) Old 05-31-2017, 06:38 PM
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Originally Posted by Carbide View Post
I suggest you buy a car with a 3.6L and massively upgrade it.

I've got nearly 100 more hp, and I want 100 more.
This car has the LFX? Direct injection, twin overhead cams, and variable valve timing, right?

I'd say you certainly have a lot to play with there

Seriously, I wouldn't be surprised to see someone getting 2 horse per cube on these (without forced induction) . And still having a durable motor.

Actually, thinking about it some, that's not too far away. 300HP/220in^3 is already 1.4 horsepower per cubic inch, so getting to 2 isn't a giant leap.

Regardless, I think this combination of features might lead to a new wave in hot rodding.


Doug

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post #6 of (permalink) Old 06-01-2017, 12:25 AM
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Originally Posted by plano-doug View Post
This car has the LFX? Direct injection, twin overhead cams, and variable valve timing, right?

I'd say you certainly have a lot to play with there

Seriously, I wouldn't be surprised to see someone getting 2 horse per cube on these (without forced induction) . And still having a durable motor.

Actually, thinking about it some, that's not too far away. 300HP/220in^3 is already 1.4 horsepower per cubic inch, so getting to 2 isn't a giant leap.

Regardless, I think this combination of features might lead to a new wave in hot rodding.


Doug

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To be clear, I had a 3.5L, and there's not much more power to be had. I did nothing to upgrade it, I just drove it and wished I had something else.

When I got the chance, I JUMPED into getting a 3.6L and 6 speed auto, and I'm far ahead in reliable power, just stock.

Easy bolts on for the 3.6L don't come cheap either, but just leaving it stock put me so far ahead of where I was with a 3.5L, there's no comparison.

The OP already has a sense of there being little gains to be had, I'm simply suggesting if he wants more power, start with a different motor for best results.

The days are gone when a set of headers and a better intake and cam would wake up any car.

Buy the power you desire by buying that car/motor up front, or live with what you have because gains are pricey and small in results.
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post #7 of (permalink) Old 06-01-2017, 05:11 AM
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Originally Posted by Carbide View Post
To be clear, I had a 3.5L, and there's not much more power to be had. I did nothing to upgrade it, I just drove it and wished I had something else.

When I got the chance, I JUMPED into getting a 3.6L and 6 speed auto, and I'm far ahead in reliable power, just stock.

Easy bolts on for the 3.6L don't come cheap either, but just leaving it stock put me so far ahead of where I was with a 3.5L, there's no comparison.

The OP already has a sense of there being little gains to be had, I'm simply suggesting if he wants more power, start with a different motor for best results.

The days are gone when a set of headers and a better intake and cam would wake up any car.

Buy the power you desire by buying that car/motor up front, or live with what you have because gains are pricey and small in results.
We're in agreement. The 3.6 has lots of room to play

Doug

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post #8 of (permalink) Old 06-01-2017, 06:56 AM
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I know it seems like an extreme measure, but you get an instant 300 hp with a better transmission by going with the 2012+. And the prices are so darn reasonable.

I understand that you like your car and don't want to incur debt, but in this particular case, it just seems to be the route I would personally go. You know that you like the platform, you like the car, you might as well get one that's five years newer or even newer than that, that's already at 300 hp without any modifications..... Plus it is the transmission that won't disintegrate in time.........I would just be very wary of significantly upgrading power with your current transmission. The transmission couldn't handle the power or torque of the V-8 rated at 303 hp very well. That's why I never upgraded my 2009 super sport. I knew that I was dealing with a finicky transmission.
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