First warm up your engine and adjust your idle in park to around 800 using the idle adjustment screw located on the front driverside of the Quadrajet carb. After you have done that, here are step by step instructions on checking timing. http://www.hotrodder.com/kwkride/timing.html It is very easy to do. The old Sears Craftsman Model 2134 is supposed to be very accurate (can find them on ebay if you want to wait 2 weeks for shipping!) , but any cheap auto parts store timing light will do for the basics.
