I have a small block 350/300HP with a Rochester Quadrajet and on the passenger's side engine there is a black circular thing that has two wires going into it and it says RICH and LEAN on it. It ties into the vacuum line that goes into the distributor. Is this thing original? Also does my car save gas if the TCS is working? It's missing the TCS solenoid and only has one purple wire going to the relay.
1970 Chevy Custom El Camino aka Kaileigh
136800B122947 | 11-17-69
Green Mist w/Green Vinyl Top
350ci/300HP Small Block
1970 Chevy Custom El Camino aka Kaileigh
136800B122947 | 11-17-69
Green Mist w/Green Vinyl Top
350ci/300HP Small Block