cam question, need help

[4bangerhotrod]

ok been havin trouble with the car not running right. 2.3 ford wont run unless the timing is around 70*, check the post (esslinger power pulley question) in mini stock tech for all the info about it. i was checking things out and noticed that when the intake valve opens on the intake stroke it stays open past bdc and dont close completly till the piston is coming up on the compression stroke. and same for the ex valve it opens as the piston is coming up on the ex stroke and is still open at tdc and dont close completly till the piston is going down on the intake stroke. the cam is set up 3 deg adv, i thought about trying the cam at straight up with the stock cam gear but it seems that would make it even worse. im not sure about all this, that might be right but it dont look like thats right seems like the valve should be shut when the piston starts the other direction on a diff stroke.
thanks,
4bangerhotrod

[let-r-eat]

Double check the TDC mark on the power pulley with TDC on #1 piston. I have seen those 5 degrees or so off from true TDC. The intake valve could remain open til 90* ABDC.........this is common practice. On a 2.3 head the valve lift matching the cam card is priority 1.......