360 magnum crate engine question

Then it’s more converter and more gear.
You didn’t mention two things.

1: Altitude of where you live and what race track.
2: Current weight of vehicle.

Other good to know things would be basically everything.
You gave us almost no information!
Tire size/width
Carb size
Header size
Exhaust tubing size
How did you route your pipes and how far?
Any engine changes?

Mind readers we are not. But help, we will try to do.
Can’t effectively help if we don’t have all the information.

Take a trip to the top stickies in the racers forum and search around the 11 second zone. See if someone has been there and done that already.

The threads we’re designed to help others reach a time goal. So the posters were to have actually done that and list everything it took to get there.

Theoretical posts were deleted or should have been.