can some one tell me the what the timming for a 87 305 wit a accel HEI and a edelbrock 600cfm is? the motor is shaking and ideling like it has parkinsons disease

 

aftermarket dizzy.

check around your timing chain cover (right behind the water pump) and find the timing tab.
base timing is beleive is 0 degrees at idle if i remember correctly

you might have installed the distributor wrong if you JUST installed the new dizzy and you are having problems with it now.

check your wires and make sure they are seated correctly (could be a misfire).

might be running lean to the point where the car is not getting enough fuel...

you could have an intake leak...

we need to know WHEN this statred happening.

did you just install the dizzy.
did you just install the carb?
what was the last thing you did to your car .

 

umm i wouldnt recomend 0 degrees for the base timing...i run my 350 at 14 degrees advanced base timing....here is a great article in the tech section...https://www.thirdgen.org/hei

 

Zero degrees is the base timing for the computer controlled system.

Non-computer distributor typically is 8-12 degrees BTDC with the vacuum advance disconnected.

 

With the vacume line off the advance I run mine at 12*.

 

yeah i seen that today on a stocker lg4 86 IROC....didnt know u could get IROCs with Lg4s....

 

The base engine for 85-87 IROC's and Z28's is the LG4. The L69 and the TPI are the optional upgrade engines. From 88-89, the TBI is the standard engine for IROC's, and the TPI is the upgrade. From 90-92, TPI is the standard engine. Now you know.

 

14° with Texas' heat? How do you get away with that? Mine would ping at 8° under the same weather (premium gas).

 

well with my 93 octane ive never heard a ping...shes runnin a lil rich though when i lean it out ill probably have to drop back to about 12