My tach is broken and can't get a new one for a while. I have a stock LG4 motor, five speed, with no cat, and a ******* cherry bomb muffler. when cruising around at what speeds should I shift gears and when racing what speeds should I shift gears? I know sounds dumb but woundering. I am trying to save money and make my own gauge cluster so I don't want to by one wire it in and then have to do the same thing again later, lazzy I know.
Matt

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1984 Trans Am
89 GTA interior, 95 seats, Eibach springs, KYB shocks and struts, Hurst shifter, K&N filters, removed cat, ******* cherybomb exhaust