Instrument cluster questions on new build

[nicofan96]

I have a 1979 GMC sierra C-15. It came originally with a straight 6 engine but has been replaced with a 350. Since the engine has been replaced the oil pressure and engine temp gauges do not work. I have heard that the gauges can be replaced with the 350 gauges or the sensors can be replaced with the straight 6 sensors to correct. Any inputs on what direction to go?

 

[75gmck25]

Oil pressure sensor should be the same for all the engines. Pressure is pressure. Temp sensor might be different, but I think they are the same resistance for each year, regardless of engine. However, SBC 350 usually has a 1/2” thread, and some older SBC’s used 3/8”; not sure about 6 cylinder.

 

[Ricko1966]

^^^^^^ senders have to match the year of tge gauge cluster.