I think we are confusing drag racing. Are you going to make one or two passes and bring it in? Or make many passes until the packs die? If its the second, that's not drag racing in my opinion. The reason I suggest the xl is because the motor has more metal in it, so it takes longer to over heat. Its more forgiving than a smaller motor. if you are strictly running for drag(1-2 passes than check your temps), you want to run the smallest motor you can, than a L size will be better.
Steven Vaccaro
Where Racing on a Budget is a Reality!
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