Say hi to the nubie,

Hello Hotrodders!

I have a 1978 Chevy K10 with a 1983 350. The problem is my thermostat always shows hot but the engine never over heats. The thermo has been changed out 3 times - twice by me. I have, also, changed the gauge. However they were not new gauges. Along with this the Temp seems to show properly when I shut off the engine leaving the power on. Along with that while the engine is engaged with the (MT) transmission the needles on all my instruments like to bounce a bit. When I put the clutch in the needles are static.