bundlosticks

i just recently swaped the heads in my 89 mustang 5.0 i got the whole motor put together in starts right up but dies immediately.

any ideas of what i did wrong?

FivePointOhh

vac leak, dizzy stabbed incorrectly possibly. those are most common after a head swap.

jthorn9

Did you play with the TB settings at all, that will cause the problem.

Other things to look into would be make sure that the EGR return tube isn't leaking out the butt, that will cause a horrible idel problem, not sure about dieing, but worth looking into.

Intake gasket leak could also cause a problem.

Did you rehook up everything around the distributer and coil?

Check to make sure all your spark plug wires are on the spark plugs.

bundlosticks

there is not a special way you torque the rocker arms?

bundlosticks

and what is the tb settings?

FivePointOhh

rocker arms...if stock stamped ones, they are just tq'd on at 20lbs and they are good. there really is no adjustment for them.