Thread: SBC 283.. 66 Impala

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it does not have a timing belt, it is a timing chain. you need to pull the plugs out, put a ratchet and socket on the balancer pulley center nut. Then you need to turn the motor over by hand using the ratchet, while holding a finger over the #1 plug hole. when you feel the air pushing past your finger that means the piston is coming to top dead center. you want to line the balancer mark at zero with the zero mark on your timing tab.

As long as they are still in the proper location you should then be at #1 top dead center. now locate your #1 spark plug wire and mark that on your distributor cap. remove the cap slowly, and your rotor inside the cap should be pointing close to the #1 plug wire on your cap. If it is then thats not your problem, if its not your chain has jumped. But your problem sounds to me like something else. But rule that out 1st.

your #1 plug is the 1st plug on the drivers side at the front of the motor, in case you do not know.