215 drag radial traction

Need some tire experience. Currently running 235 BFG radial TAs. I can't floor the car off the line. I turned a 12.9 @ 104 and I'm still running super rich. The tires are 26 inches tall. If I put 215 drag radials on 14s I end up with 24 inch tires and my rpm through the traps will be 6100 which is right where I want to be.

Is a 215 drag radial going to give me the traction I need to floor the car right off the line?

I'm dying to beat my buddy's 12.5 Chevy!

Thanks
Dave

To be honest 12.9 at 104mph is pretty much right on the money. You might get a 12.8 or even a 12.7 messing around with gears and tyres but to beat a 12.5 you're gonna need more horsepower.