My manifold upgrade project is coming along well. All vacuum plumbing issues are resolved, thanks in large part to the help I received here in HiPo.
This should be easy - someone tell me the purpose or function of the sending unit in the picture. I believe that oil pressure is the canister next to the distributor, and coolant temp is near the thermostat, so what is this one? Elementary, I know, but I drew a blank today.
Thanks in advance; enjoy the picture of the engine bay in progress.
