What's a good gap for the plugs in my 200-6? I'm checking the gap in my dizzy tomorrow, and was thinking about my spark plugs. What's a good gap?
The tune-up spec on the plugs is .035. If you are running a lot of freeway miles then you could get away with .030.
I've got'em @ 0.035 as it is, so I'll stick with that. Got some new platinum plugs =) My dizzy gap's still in good shape, and I've got a new condensor in there as well. Thanks for the info, and yeah hardly any freeway mostly street small freeway trips to work and back sometimes.
.35 sounds like a good gap for that application.I'll tell you Another method I used when trying to find a good gap.I would take out the number one plug.And put the wire back on the plug.Then take out the other plug wires.I would put the gap at .30,Then have someone crank the engine till you see the spark firing.Then stop and add another .05 gap to the plugs.So now it would be a .35.Then repeat the process.Keep doing this till The spark gets weak or missing.Then back it off .10 or .05.My 67' Chevelle with a 427bb was running a .80 gap.The throttle response was real crisp.It originally .35 with the points.When I added a normal hei I put it at .45 it did'nt feel as crisp as it should be.So I try'ed this.And I was able to run a .60.Then I added a high output hei.And did the same thing and was able to run a .80.You can try it if you want .Another mechanic thought that idea was crazy.But I've done it with all my cars and my customers.And never had any trouble.Just make sure you have quality wires and plugs.When I upgraded the ignition It tended to burn out the stock stuff a lot faster.
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