The distributor went in afterwards when the engine had been turned over by hand a couple times, but piston 1 was TDC of what I thought was compression stroke. I am back to thinking it's timing again, gonna play with the distributor later. Although at the moment I am getting a spark after the intake valve closes and before the exhaust opens while the piston is at the top of the cylinder... which is why I'm puzzled by how it's timing. I don't mean to be adamant in saying I'm not wrong! Here's a video of it not running. http://www.youtube.com/watch?v=SMSxbfYvXvw&feature=channel
For this to flame back right through the intake and carb means there is a spark happening whilst the intake valve is open. Is that right?
Think I'll take covers off again, get piston 1 TDC on compression stroke, which is after the intake has closed and before exhaust opens, and reinstall the distributor. Make sense?
Lloyd www.firebird67.com 67 Firebird 326 Coupe. Currently undergoing restoration.