For 5.5 months I have been re-building my Maverick and you guys have been a great help. Below is a pitcture of where I am at. I need to get plugs and dont think the standard plugs will work well with all my upgrades and 50K Volt HEI. I was thinking of looking up a plug for a 5.0 Mustang (with Carb) from the 1984 model year. What do you think? I am thinking it would be compatable or close? If it helps I am running the following: Edelbrock 4bbl 600 Headers/X pipes/Flow Masters Cylinder Head Work and Porting Cylinders Honed/4 inch Performance Cam and Manifold Electric Fuel Pump 50000 Volt HEI Upgraded Pistons B and M Shifter NOS in 2 thousand miles (75 or 100 hp boost, not too much)
Can't help you with your plug problem, just wanted to say it is awesome having all clean like new parts, isn't it. Good luck on the motor and post pics of the cars progress as well.
What heads are you using? are they the heads off the engine? and is it the engine out of your car? 1972?
I am usung stock cylinder heads with some head work done, smoothed out and port matching. Motor is out of car. Yeas 1972-302.
i gust seen saturday some caind of plug e something that give you more performance and save gas you can ask autozone or advance
you're going to need a colder running plug if you plan on running NOS with it... try to get a 1 or 2 cycle colder plug than what the normal one is.
Depending on what performance cam you have you might want to replace the "push-in" rocker studs with screw-in studs. Those push in studs have a habit of pulling out with longer duration and faster lifts than stock. Your compression will determine which plug you use but like the man said - if you are using nitrous then go at least one step colder plug or you will run into detonation and ruin those new pistons.