Join Date: Apr 2013Posts: 2,530Feedback Score: 0 reviews

You can gain 1/10 (one tenth) of a second for every 100 lbs you can reduce in a performance sports car. It is pretty linear for cars that weigh less than about 3900 lbs. After around 4000 lbs it is not linear at all. To gain the extra 1/10 of a second you have to shed more than 100 lbs.

Rob-2 is correct, it is around a 4250 lbs car stock as an RT and even more as a 392. Like said, the Charger is also not a 50/50 distribution, so where you take off the weight has a big impact on performance. (Depending on straight line or road course racing)

There are more advantages reducing the un-sprung weight (forged wheels, lighter brakes/tires) than taking out the back seat ect... A 37 to 50 lb reduction in the un-sprung weight would likely give you a noticeable difference on the track. (Not if you are running 22 inch rims!!)