type of plugs

[bubbakat]

I have a 1970 50h/p 5oo thunderbolt engine and would like to know the best spark plug for it.<br />I run at 60% to wot most of the time but would like to change plugs

 

[The Marine Doctor]

Re: type of plugs

BUHW for NGK<br />L76V for Champion.<br /><br />TMD

 

[bubbakat]

Re: type of plugs

thanks doc