AdderMk2

I ran 15° timing until I got my car onto a dyno, and found that it made optimal power with 12°

I personally wouldnt go much further than 13° since ~36° total timing is optimal, and the computer adds 25° onto your base timing

94GTPRO5.0

yes Adder is right,it really just depends on where your car will run the best.

FoxGT

I ran mine quite a bit over stock. With the stock cam it would start to fall off bad above 12, with the x303 bumping it up further keeps giving it more. I took mine as far as I could before it knocked on 89 octane then went down a touch.

foxGT93

will 93 octance work with a 15 degree advance?? i was told it would.

AdderMk2

that doesnt matter.... you should set your timing to what makes the best power... not the highest octane you can run

imnotmy77stang

ya really gotta wonder how many times you have to tell people where their timing should be before they listen[&:]

12ish base, 36ish total is optimal for about 99.9% of you guys

mxrider426

Well like i said i have ming at 16 and runs alot better at 16 than 12 or even 14. Better throttle response and just plain faster. And its still on 87 octane.

Foxbodyforever

allright so i got a timing gun from my friend anyone wanna run me through how to set it to 12 degrees btdc? i've never changed the timing before :S

mxrider426

Pull the spout connector out. Its the little gray thing by the dist plug. Slighty loosen the dist hold down bolt. Leave a little tension on it though so it doesnt move by itself. Hook up the timing light to battery positive and ground. Hook the other part to the number 1 spark plug wire. If you are standing at the front its the front left. Start the engine let it warm up. Shine the light on the harmonic balancer and see what its at. You might have to clean the balancer off to see the marks though. Slighty turn the dist to get it where you want it.

AdderMk2

I bet if you brought your motor to TDC on cyl#1, you would find that your balancer is probably not lined up right....

read the tech articles....