Temp sending units???
Thread Starter
Instructor
Joined: Mar 2001
Posts: 229
Likes: 7
From: west point ga usa
Temp sending units???
I'm installing a 502 in my 74 454 and noticed I have two sending units in the 454 heads. Do the big blocks use 2 or am I missing something here? The one on the drivers side has one terminal and the passenger side has two terminals.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Temp sending units??? (my74ls4)
I don't know but if there is only one terminal it could be a grounding for a warning light so if the motor overheats the red light comes on. I have one in my passenger head that turns on a light at 230F. The other one might be a temperature gage. My temp gage is connected also to a single terminal in the drivers head.
Just guessing though.
Just guessing though.
Team Owner
Joined: Jun 2001
Posts: 23,381
Likes: 1,067
From: Virginia USA
Re: Temp sending units??? (greg454)
On my 72 the one in the pass head with two terminals was for the transmission controlled spark (TCS) system. Mine was disconnected years ago. :cheers:
