When to shift?

Honestly there is a story behind the carb. My dad gave me the Eddie. I run it on the street and if he is going to the track with me I run it. Right after he gave me the Eddie my friend have me the Holley. I feel bad putting the Holley on over the Eddie in front of my dad.

Next time I go to the track though he will
Probably not be there so I'll do the switch and see what happens. I'm convinced I can get this car down into the twelves without any more major investments.

Ohhhh kay, well that makes sense....well, I mean, I can see not wanting to hurt feelings and such.

What kind of shifter do you have? Just curious since you are going to be shifting it by hand instead of throwing it in drive. Like the others have said, try 5500 shifts and see what happens.