Here's a odd-ball idea: Is the EGR valve working properly? I had a 74 that stumbled if the EGR was disconnected. It seemed that the distributor gave it so much advance right above idle, that it needed the EGR to slow down the combustion. In this case, the problem wasn't a flat spot like a lean mixture. It was a stumble like way too much timing advance. ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/.