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Originally Posted by Irace86.2.0
It would be under the horizontal (transverse) midline of the car, or mostly around crank height and lower, which is good, but definitely in front of the vertical (frontal/coronal) midline, which would put the car more front biased, even further away from the stock 53/47.
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Nothing a corner balance wont fix (see below from the LS3 BRZ thread).
Additionally it seems conservatively less than 50 lbs are gained from the swap (and weight closer to the center of the car) when compared to a S/C kit (I/C and piping up front, etc.) probably even less gained when compared to a turbo kit.
I say it's good hard data that can give confidence to anyone considering swapping that you won't just destroy the car handling characteristics. Of course, not all engines are LSs and this doesn't mean the car handles absolutely the same as stock, but it gives a good idea that you're not drastically changing it.
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Car has been weighed...
According to my calculations she has gained 121 lbs over stock. What a fat pig she has become. Oh well, eventually she will be put on a diet. I think all of the torque should make up for it in the meantime!
The big plus is the front to rear weight distribution remained practically unchanged from factory at 56.2% front and 43.8% rear. I believe factory is 56-44. Don't think I'll notice .2% (these numbers are off because stock is 53/47, but the main point is the post below where a simple corner balance nets the car at 50/50)
Car weighed 2979 lbs with a full interior, spare, tools and a full tank of fuel. Minus 2776 for a stock brz and 82 lbs for 13 gallons of fuel, I came up with the number 121 lbs gained which sounds about right. Please feel free to chime in if you think I'm mistaken.
For reference my Jackson Racing supercharger weighed 66 lbs when it was boxed and ready to ship. My Edelbrock kit was 99 lbs shipping weight. So to sum things up I'm pretty happy with the weight gain compared to FI. And I'm very happy that weight distribution remains practically unchanged front to rear.
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the nice part is we have a 50% cross weight without driver and got it to 49.6% with a 225lb driver without having the car sit at awkward heights on each corner from balancing.
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