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I have a 70 `cuda with a 440. I have a set of scales and what would be good corner weight numbers.

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Put it on first to see what you have...there is no
magic combo... for all we know you could be 58% on
the front

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With out any pre-load, the rr is about 150# lighter than the lr.I have to adjust the lf up to get the lr and rr the same. I have ss 02/03 springs. I just wondered if this was normal. The lf and rr become pre-losded to get both rear tires the same weight.

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Yes its somewhat normal to jack up the LF to get the
weight over to the RR... your RR should be close to
the LR or even slightly more to correct for the torque
so it drives out straight

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With out any pre-load, the rr is about 150# lighter than the lr.I have to adjust the lf up to get the lr and rr the same. I have ss 02/03 springs. I just wondered if this was normal. The lf and rr become pre-losded to get both rear tires the same weight.

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Yes its somewhat normal to jack up the LF to get the
weight over to the RR... your RR should be close to
the LR or even slightly more to correct for the torque
so it drives out straight

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You can always cross jack weight. But beware. When the front wheels are off the ground all the weight you just moved has gone out the window. Getting the cross weight equal on a factory style door car is tough. The larger the driver the harder it is. This is what my 64 Belvedere weighs. I worked hard to mount components on the right side of the car.
Weight w/185 lb driver
3313
LF 926 RF 878
LR 745 RR 764
Front 1804 lbs 54.5%
Rear 1509 lbs 45.6%
Right 1642 lbs 49.5%
Left 1671 lbs 50.5%
Diagonal
Cross 1623 lbs 49%

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But also Doug , tell him you run a ladder bar...
makes a difference over SS springs

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With out any pre-load, the rr is about 150# lighter than the lr.I have to adjust the lf up to get the lr and rr the same. I have ss 02/03 springs. I just wondered if this was normal. The lf and rr become pre-losded to get both rear tires the same weight.

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Yes its somewhat normal to jack up the LF to get the
weight over to the RR... your RR should be close to
the LR or even slightly more to correct for the torque
so it drives out straight

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Why is this? Doesn't the car naturally torque it's self over?

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The rear end is trying to roll up around the drive
shaft which lowers the body on the right(really the
RR tire is trying to go up) so you need the added
weight on the RR to counter this.... if you look
at my slicks you can see it a bit... the RR tire isnt
squatted as much as the LR.. thats the rear end trying
to roll up... thats with 15# extra on the RR so it
drives out straight

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The rear end is trying to roll up around the drive
shaft which lowers the body on the right(really the
RR tire is trying to go up) so you need the added
weight on the RR to counter this.... if you look
at my slicks you can see it a bit... the RR tire isnt
squatted as much as the LR.. thats the rear end trying
to roll up... thats with 15# extra on the RR so it
drives out straight

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John Dianna told me years ago to shoot for 20 to 30 lbs more on the RR compared to the LR on a ladder bar car My thinking is try things and find out what works for you, Not every thing works on every car all the time and exactly the same

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Also don't forget to take one of the bolts out at the housing on a ladder bar car so when you jack the weight it won't bind. If leaf springs it won't matter.

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If your car is left side heavy, like mine, the numbers will look odd. If the car is 3,000 total, but 1550 on the drivers side, and 1450 on the passenger side, then 50/50 front rear would look like this to me.
lf775 rf 725

lr775 rr 725
With these numbers, you are 50 percent front rear when looking at it by each side.
with 20 bls added for pre load, it would look like this
lf 795 rf 705

lr 755 rr 795
I don't claim to be ab expert, but it would make sence to look at the percentages side to side Vs just corner weights.

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If your car is left side heavy, like mine, the numbers will look odd. If the car is 3,000 total, but 1550 on the drivers side, and 1450 on the passenger side, then 50/50 front rear would look like this to me.
lf775 rf 725

lr775 rr 725
With these numbers, you are 50 percent front rear when looking at it by each side.
with 20 bls added for pre load, it would look like this
lf 795 rf 705

lr 755 rr 795
I don't claim to be ab expert, but it would make sence to look at the percentages side to side Vs just corner weights.

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Now do you still run with the extra weight with a anti roll bar?

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You attach the anti roll last so there isnt any load
on it... that should be neutral

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Yes arb neutral, but would you still want the weight heavier on right. You know have a bar loading your rear tires equal.

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Yes the right ladder bar is loading heavier but that
doent mean that its carried over to the ARB... it
would the same as not running a ARB