02NHRAtransAm

iTrader: (17)

Forgive me if this is a question.... But what it the typical 1/4 mile or tenths gain for every pound lost? Is there and actuall guidline or formula. I know every little bit helps... j/w if there is anyway to calculate it.
Thanks

Dial In GTO

Generally speaking 100 lbs is a tenth in the quarter.

Gary

mrdragster1970

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That's what we use to guess.

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Villain281H

iTrader: (5)

100 lbs to a 1 tenth is a standard rule in most cases.

Rolling or rotating weight will help more than standard weight. For example, dropping 100 lbs on wheels/tires will can the e.t. more than dropping 100 lbs in body weight.

Derek

1SlowFormula

Also it depends on where you drop the weight and how... I dropped about ~65# off the very nose of the car with removing the front bumper support, adding lightweight battery, and skinny front wheels/tires but I added ~10# back in for custom CM subframe connectors. The skinnies helped with weight and rolling resitance so that wa a double bonus.

But with that I only removed about 50ish # (overal weight) but most was from the very front of the car and I picked up more then a tenth, because of the added weight transfer, weight reduction, rolling resistance reduction, and such.

I agree that the standard guestimate is about 100# per tenth, but depending on what and where you pull the weight from can either help or hurt you too...

9sec93

iTrader: (67)

also depends on what your car weighs already. for example if your car weighs 3300 lbs and you take out 100, you may gain a tenth. BUT, if your car weighs 2600 and you mamage to ditch 100, you will gain more than a tenth.

brandonppr

iTrader: (9)

just what I was going to say.
Instead of measuring by lbs measure by pecentage of lbs.

for example if you take 100lbs off of a 3300 lb car that is 3%
if 3% gives you a tenth then...

taking 100lbs off a 2600 lb car is around 4% so that should give you about 1.3 tenths in theory if the first one is correct.