1/8 mile comp cam xe274H

Hansen said
Sorry, forgot.. 3:73 gears with 255/60-15 tyres. Unknown converter but it breaks the tires loose at 2k rpm
Altitude is around 1000 feet above sea

I agree, it's not running to potential. I guess you'll have to start with the basics.

Where is your total timing ?
What RPM are you shifting ?