WELL HI EVERYONE VERY NICE TO BE HEAR ,,,,IM NOT SURE IF THIS IS WHER I AS...K SOMEONE FOR HELP,, BUT may I say,,,,,, I have a prob with my 86 gl stock ..just put new heads on , but I am going crzy hear I don't no what to do,,, I will be so thankfull if someone can help me ,,befor my van ran so good ,,,then got hot,,,,so u can guess needed new heads,,,ouch/////// any way now ive been working on this for a month now getting so upset ,, I start the van and it surges,, to about 4200,,rpm then dies ,,starts right back does the same thing white smoke with high rev.......please help