How do you get a Suspension to hook, when the track surface is marginal at best

Thanks again to you all!
I can answer some of you question but some i will have to get back to you tomorrow night!
Rear shackle is rear word 1 inch, as in the left spring part of the shackle is 1 inch back.
Rear shock are MP " race shock (purchased also in the late 1990's)
Front shock are standard worn out shocks
Rear segment of the SS Spring are not unclamped
When i installed the pinion snubber it was at the highest spot without having to raise the body to get the pin in it. (also installed back in the 90's)
This is a full Dressed car that hasn't see the street in over 10 years. It's a race cars...just a heavy one. Aka track us only car.
Front travel......just went and check. I have exactly 5" of travel. I have threatened to cut the bumper off to get me a little bit more travel.
Rims are a 8" x 15 finned alu wheels. fronts tires are 165 80R 15 and backs are 26 10 15 M/T ET Slick with tubes
When the track has some teeth in it, my best 60' was a 1.707 "Disclaimer" I race at 1/8 mile track and the elevation is 6600 feet.
best ET to date, is 7.86@87 mph 1/8 mile.
I will have to jack it up to check my pinion angle......and find my angle gauge

6600’ what do they call it, Hypoxia?