[art leong]

What tire pressure? Sounds like you have a lot of final drive ratio. I run a 20 inch tall tire and have 3.73 final drive. Plus the car is only 2600 pounds. Have you tried taking out some low rpm timing?
1.90 doesn't sound that bad. The best I had with my stockers was mid 1.80's running mid to high 13's
With my superstocker My best so far is 1.85 and the norm is 1.90 and that is going 13.1's