T-bars vs Stored energy

you don't want to put 340 bars in your car. It will only make it worse.

your saying 6cyl bars vs stored energy?

stored energy is what helps get the front end moving up for weight transfer. the 6cyl bars will give you more stored energy than all the others except maybe the Mopar Performance drag bars.

The way that works is like this.
the 6cyl bars are smaller than the 340 bars. this makes the "spring rate" less. when you install a t bar, you are locking one end down so that it can not move in a twisting motion. this is the end in the cross member. the other end can rotate and does when you turn the adjuster bolts and let the front end down to put weight on the lower control arm. so your bar is being twisted in the same way that you would wring out a wash cloth. say you installed 340 bars and counted the number of turns it took on the adjusters to get the car to the height you wanted in the front. now, if you were to install the softer 6cyl bars it would take more turns (twisting of the bar) to get the front end to that same height. what this does is put more tension in the bar by twisting it more. that makes stored energy that is going to help the front end get a "run and go" when you nail the throttle and the weight shifts rearward.

that's a long way of explaining it, but basically you want the bar that you have to twist more to get the ride height your after.

now, it makes no difference which end of the bar is in the cross member and which end is in the front suspension. It DOES matter which side the bars are on. you may already know that, but in case you don't, here goes.
looking at the end of the bars, they will be marked with a R or a L on them. the L is the driver side and the R is the passenger side. It matters because they are "pretwisted" from the factory, and if you have them in the wrong side they will be fighting against their natural direction. this could cause an issue with weight transfer as well.

You may already know every word of this post. I'm not trying to make you out to be a dummy, just putting it out there in case you don't know these things.

For what its worth, I have a 71 dart with 408 stroker on e85 with caltracs and 29.5x9 slicks. runs low 6.80's with 1.45-1.47 60ft times. I had a similar problem to yours after going to Caltracs and mono leaf springs. I leave at 3200 rpm on a transbrake. the only things I did to fix it was using a nickels worth of air gap on top of the rear leaf spring, and tighten my rear shocks up to 7 from 4 on the extension. Hooks hard now and those sixty ft times are with a 1.76 first geared Powerglide.

hope something here helps you.