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update on cam, The Racer Brown camshaft is a SS-24-108. SS is a super street

The engine is the L24. The camshaft is a Racer Brown 9/6 E1035. The stock distributor is a vac advance unit. The advance is not hooked up. There is not a port on the intake for the vac line. The timing spec is 10, I have it set at 12. Light throttle and ease into the accelerator the vehicle runs great. If you get on the throttle the engine boggs down briefly, let up and then runs fine. It acts almost like it chokes it self. Idle is fine. Hold a steady throttle at 3000 rpm there is a slight intermit skip. The carbs have been rebuilt.

I have a question that hopefully some one can answer. The 240z has triple side draft weber carbs, The distributor on the car is still the original point syle vacuum advance unit. I cannot advance the timing enough without causing problems with pinging and hard starting. The 240z runs ok but has flat spots under hard accelleration. Should I look for a Mallory mechanical advance distributor or intall the euro 22100-E3101? My understanding is the 22100-e3101 is a single point distributor with a quicker advance curve.There is not a port on the intake for the vac. line to the distributor.