Problem with gt40p spark plugs want some good spark plugs but most wont fit??
i got gt40 p heads and had a time geting the spark plugs out wen i do they definatly needed to e changed they were auto lites the cheap ones ..... well i went out and got the double platinum ones 4.99 a piece well after trying for about an hour in all positions i couldnt get them to go so figuring the threads were messed up when i took them out i tried one of the old ones and low and behole went right in!!! the cheap autolite ... doesn ne one else know of this problem and if so doesn ne one know what kind of good spark plugs will fit other than the cheap ones???
If both wheels aint spinning then i aint grinning