Launch RPM for a 4 Speed?

[mfchassisworks]

Awesome pic MR BB CHEVY!!

If you dont want to run a fuel pressure gauge make a temporary T-fitting install it as close to the carb as you can, get Autometer's copper oil pressure line, and get a small liquid filled gauage and install in on the end of the line. Run it up the cowl to the base of the windshield, under a wiper arm, or 200 mph tape it to the windshield where you can see it. Find a safe place to run through the gears, Then watch how low your fuel psi gets. You will be surprised. If you don't have always have 7psi then you aren't making hp. If you try to tune based off you plugs at the end of a run they will give you a false reading as the carb will seem lean but really there simply isn't enough fuel. No fuel means low hp = low mph.

For the launch don't worry about the other guy, when you are testing there is no prize for cutting a good light. Let the other guy leave first then watch your tach and go. Keep raising the RPM of the launch until the bog goes away. and...hold on!!