so im running a 355 with a cam and all thaat good stuff. problem is, i have an MSD ignition and 2 of my plugs are arching to the block. the plugs were replaced last summer, but i didnt drive it from august till this month. is the MSD too strong for the regular ole stock delco plugs or are they more likely defects. in the case of the first one or in general, are there better hi performace plugs i should run to take the extra voltage?

 

Plug boots may be split, or may be burned enough to let the spark jump.

 

wires are brand new MSDs replaced with the plugs tho

 

MSD isnt too strong. check connections and boots as stated above

dont fall for gimmicks. (such as the e3 $6.00 a plug), plugs are plugs. only difference is some burn hotter than others.

 

ill do that, also, a buddy of mine runs the same ignition set up on his chevelle with a 383, im runnin r45 plugs i belive, he said go with r43s which are colder i guess. would the fact that my plugs arent "cold" enough cause this problem?