correct spark plug gap

[kocuda]

I have a 12.5 to 1 comp 440 with full MSD and eddy heads. I just installed new plugs (a real pain in the a$$) and set the gap at .045 is that gap ok? Engine now seem to run very rough until it warms up. Any input.

 

[kocuda]

bump

 

[toolmanmike]

Stock spec is usually .035 but I don't know what MSD recommends. You should be ok with .045. I like to set them a little narrow for a stock tune up because as the plugs wear the gap increases. Toolman

 

[mopar head]

Does your MSD instructions say? MP systems say .035 I know you hate to redo but, I`d try it..

 

[chasduster]

check your choke might be staying close to long.....