I have a 1985 13B Street Port Motor.The car is running a little rough @ idle & Sometimes problematic in starting.The plugs that are there now are Stock 13B Plugs.Should I be using the Street-port Plugs That Racing Beat Sells? Does any one have any suggestions?

 

I know ported engines have a funky idle. What's the condition of ur plugs? Problematic starting could be a bunch of things. Is your car still fuel Injected or have you carbed the motor?

 

The Carb is a Hitachi 4bbl w/Mechanical Secondaries.Not sure of condition of plugs I haven't pulled them yet.