So I have rebuilt my six pack and have them installed and have the car running but as its running once it gets to operating temps it gets a backfire in the exhaust and the guy who rebuilt them said that sounds like a valve issue im trying to find someone to adjust the rockers but im wondering if...
How much would you be asking for it? Do you have any pictures of it? I have a 70 challenger that is a 340 4 speed car that is most of the way restored.