[Mitch Leland]

I thought maybe some of you would find this interesting... I weighed my car with the LS3 motor installed, the installation is now pretty complete less the wiring issues that I had mentioned previously.

Bottom line my car is just about 200 lbs. less than the factory delivery. Here's a breakdown of how I got there:

Jan. 8, 2014

WEIGH IN FOR 2003 996 C2S

I weighed my car this evening using electronic scales borrowed from my friend Joe who runs the FBO at the airport.

1. 2003 Porsche C4S = 3,296 lbs. - 3,450 lbs. (spread is because different accessories will change the weight)

Removed:

1. Porsche engine and accessories
2. Front differential, drive shaft and axles
3. The rear spoiler, spoiler motor, hinges and drives
4. Engine blower fan
5. Engine wiring
6. Engine sheet metal for alternator and A/C compressor clearance (guessing 4 lbs.)
7. Rear seats - 10 lbs.

Added:

1. Electric Hydraulic power steering motor (guessing 15 lbs.)
2. Electric water pump (guessing 5 lbs.)
3. 3rd radiator, hoses and additional coolant
4. LS3 motor

Car now weighs 3,330 lbs.

Includes:

1. 16.6 gallons of gas x 6.5 lbs/gal. = 107 lbs
2. Oil - 6 qts. = 11.25 lbs
3. Coolant - 5.5 gallons - 9.33 Lbs. per gallon = 51 lbs.
4. Spare tire
5. Tools

Deduct gas, oil and coolant from empty weight comparison.

3,330 lbs
169.25 lbs. deduct
_________________
3,181 lbs. empty weight w/ the LS3 motor
3,375 lbs. assume factory weight with some accessories
________________
194 lbs less. after the LS3 motor is installed.

I think the bottom line is that my set up is probably less weight than the factory specs. If I hadn't taken out the front differential the LS/996 would probably weigh just about the same. However Renegaded touted that the GM motor carries it's accessories on the bottom of the engine where as Porsche has them on top. Lower C/G… Basically I have 150 more H/P with nearly 200 lbs. less.

The above works out only because I removed the front differential. However the RWD cars would be pretty much the same as my calculations. Here's the weights from the weighing:

Left Front - 677 lbs.
Right Front - 667 lbs.
Left Rear - 1,003 lbs.
Right rear - 982 lbs.

Left side - 50.5% - 1681 lbs
Rear - 59.6% - 1985
Cross - 50.2% - 1,670 (right front + left rear)P


Mitch Leland
"Home in the Hill Country"