Valve colors ,340 with Trickflow heads .your thoughts , thanks

[Tim Lynch]

 

[Xcudame]

Tim, how many miles? How is the car run (i.e. street, racing, combo)? What spark plug are you running ( heat range is more important than the brand. What ignition (and coil)?

Exhaust valves look good. the one intake is a little black and there carbon build up in the combustion chambers that suggest maybe not all the fuel is being burnt well. You only provide two cylinders. What do the other six look like?