Only if the bars are the same size.
example...
1" solid bar ='s about the same torsional stiffness as 1 1/8" hollow bar.
So if you run a hollow bar the same dia. as your old solid bar the hollow bar wouldn't transfer as much weight.
From
www.pozziracing.com #antiroll
67-69 Front Antiroll Bars
I just received an E-Mail from Hotchkis. Their hollow front bar is 1 1/8" in diameter by .120 wall.
Given that information, I've figured the bar rates and resulting wheel rates in lbs, and weight of each bar.
Dia. . #at bar #at wheel calculated weight of bar - lbs
11/16 . 144 . . . 109 . . . 5.6 stock
7/8 . .. 377 . . . 285 . . . 9.2
1 . . . . 643 . . . 487 . . . 12 common aftermarket size
1.125 . 636 . . . 482 . . . 6.2 (hollow)
FYI I run a 1 1/8" solid bar from Hellwig. It's way to heavy for a stock set up or runs down the track.