You need a double adjustable shock in the front, not that 90/10 thing.

You have no real way to control the front suspension.

opinion:Its not the hit thats the problem, its chassis control, she tries to hook hard at the hit it seems.
Do you have travel limiters up front?
Shock control in front looks to be toast/nada.
In my minds eye the reason shock adjustment on rebound isn't making any difference is due really poor front suspension control and, perhaps too much bottle too soon but, wont know that until front end is tightened up.
If you just have90/10 front shocks- are they adjustable at all- can you go to 70/30 and at least lengthen up the bump stops?
I would tighten up rebound on rear shocks as far as they would go and try to tighten up the front.
Man i wish you could find a set of scales.

It also appears you "might" still need a little more air pressure.
We have found here that tires actually need a bit more pressure than we used to think.

I would try 6 flats of negative preload. big motors hit the cal tracks so hard they quickly rebound and lose traction maybe 12 flats negative.

How old are the rear tires and how many runs on hem?

If you have Calvert's 90/10 front shocks, take them off and sell them and buy a decent DA shock. The Calvert 90/10s are WAYYY too loose. Any 90/10 is wrong for your car anyway.

yes i have 90/10 Calvert..... why not work on my car ?????

29.5 11.50 15 MT with around 15 pass

now on the rear... qa1 double adjust all closed -6 compression -6 return

very good info ...i Will let you know.. if I can find the balance ...which benefits with 70/30 instead 90/ 10 ??

They are too loose. Lets the front rise too fast unloading the rear.
I tried the Calvert 90/10s on my car a long time ago and it refused to hook w/ them...that was running mid 9s on motor. Put stiffer shocks back on and it went back to working good. Slowing that rate of front separation does a lot.

The Viking double adjustable shocks I have now are much better.

Bars need to be in the bottom hole, PERIOD!

It hits the tire hard then unloads

You need push not bang

How old are they and do they sit outside in the sun light when not in use?

Cab is getting at something here, and I agree. The sidewalls are most likely killed from the combination of power/ weight, and running such low air pressure.
Put me in with the guys that suggest front shocks also.

No sun ... 1 year age

Finally

Little bit less shot in 1 step 150 hp wide time from 1 step to 2 step before 2 sec.. now 3 sec ?

caltracs at bottom hole

new front shock Viking or AFCO

Torsion bars ??? is possible have drag racing torsion bars ?? mine is original from the car

What engine was in your car originally? Don't get the drag race torsion bars...they'll make it worse. Like a loose shock, a loose torsion bar is not what you want.

The Cal-Tracs in the bottom hole will soften the hit. I still think you need more air pressure. My car responded well to adding air pressure from 12 up to 14-15 psi.

Add weight to the trunk. If 70# on front hurt then add 100# to rear.

I agree with an8sec70cuda here: Front shocks and front suspension is too loose/too fast in both planes.
Car tries to carry the front and certainly has the power, she seems to grip at the hit but- the front "bounces up, then drops down".
When coming down, it comes down too fast and, to far, when the car pivots forward on the front- rear is unloaded.
Granted it started to slip/spin at apex of front coming up.
Think of a piston at the top of the stroke- for a microsecond- it stops.
Same with the front end travel, it stops moving up and immediately starts down and that movement changes weight transfer.
We are working on one here with the same issues.
adjustable bump stops or travel limiters can help some but you really, really need adjustible shocks and- a set of dang scales.
If i could i would ship you a set to set up with.
Why?

lets say you car is on scales and this is what they say:

Lf- 946 RF- 796
LR-756 RR-848

car is left front, right rear heavy- really not good.
A QUARTER TO HALF TURN ON A TORSION BAR will pretty well level out the weight bias on the car.
the point is- it only takes a tiny bit of torsion bar misadjustment to have car unhappy.

Hope this helps.

FWIW I've been a 1.33 60 ft. with Rancho 90-10 fronts and 5-ways out back but every car is different up to a point........