I need adjust my timing and was wondering if this is were the timing degrees are suppost to be, my timing tab looks exactly the same as this one, help me out here guys i dont know were 0 degrees is suppost to be here.

 

your drawing is correct. 0* is your first valley. just like your illustration shows.

 

Thanks dude, now i know were the timing should be, also btw if i were to advance the timing to 2 or 4 while running 86 octane will it cause knock ? I have heard ppl say this motors like a little advance from the stock 0 degrees but will require 92 or higher octane.

Also btw found this little pic that shows exactly what each mark is, hope it can help others looking for timing help.

 

Hey no problem man. and as far as advancing timing. you might be able to get away with a little advance, but there is no real advantage on a stock car. The computer will just pull timing as it sees fit, from the info it gets from your knock sensor. And all higher octane does is, slow the rate at which your fuel burns( well alot more than just that) for higher compresion and advanced timing. If it was my car I would set it At 0*. Or if you want advance it 2* at a time and drive your car and see how it responds. If you must. Good luck, drive fast and take chances.

 

Ty, im gonna set it at 2* advance then set it back to 0 if i hear knocks or pinging.

Btw another question, my 305 is 18 years old with around 150k(odometer broke at 130k months ago), do u think its time to change the timing chain already , i dont know but i heard these chain strech with age and i dont want it jumping a tooth and bending my pushrods and messing my engine up, i have no space,time or money to afford a rebuilt so better to change old critical items before they brake and make it worst.

 

Timing chains are usually good for 100,000 miles or longer. timing belts you do at 60000 miles. however ive seen chaings go at 75,000 and last well over 150,000miles. My general rule of thumb is 100,000 miles or less, but i tend to run my cars hard. An ounce of prevention is worth a pound of cure.

 

Get to time the car today, set it at 0* and didnt notice the little mark jumping up and down so i guess my timing chain is nice and tight, it may have been replaced already by the PO since i noticed some silicone sticking out some parts were the timing cover meets with the block.