What kinda of rpm are you crossing at ?
I honestly don’t know as every track I race at now runs my class 1/8 mile. I was about ready to change our the 4:88 gears when this happened so I’m glad I held off. Even at 138mph it felt like the car was out of steam around 1000 foot. Probably a combination of only having an 850 carb and a solid lifter cam.