V, think about the physics of motion. You are moving forward at 2000rpm locked up drive train, and have traction. You have no from a stop launch impact at the tires. Just the pump shot.
You are proud of what you built and that is awesome.
When my cuda had the 4.10 gears in it 1st gear clutch out at 2000rpm, it would not spin them with cheap 265/60 15 street tires. That roller 440 makes 550hp/550 TQ. Dyno sheet in photos, car in journal.