[Hmbld]

I changed out my thermostat from a 160 degree to 195 degree. Before the change the factory gauge gave readings about medium or a little past on the gauge. After the change the gauge needle pegs out on the high side. It is a small block with a replacement temperature sender.

I know for a fact the the early 2nd gen Camaros had problems with calibration of the replacement senders to the gauge. Anyone know if this is also true with the 1969's?

I fixed my 1971 gauge sender to gauge with a 15 ohm resister between the gauge and the sender.

[DjD]

Changing from a 160 to 195 deg stat should have shown a small increase in temp on the gauge as the higher rating stat is going to force the system to get to 195 before the stat opens. I guess if there was a problem in the upper range of gauge calibration what you are seeing could happen.

I am more inclined to think your stat isn't opening though and that is what is causing the excessive temps.

[JohnZ]

Do you have the same sender in it now that you had before, or did you change the sender when you changed the thermostat?

[Hmbld]

It is the same sender.