i just bumped the timing to 14 degrees and what a difference it made.i know its a useless thread just wanted to share.

 

Is that timing safe for my 87 to run? If so what kind of gas do I use?

 

i was up to 16* without issue on my old build. 89 octane.

 

advancing your timing will only add power to a certain point. Anything past 15° usually makes no difference in power

 

Im at aprox 17* now. Still going to play w it. I run 93 when tuning timing, but will try running 87, some people say run a lower octane cause thats what these cars are made for, but someone else says 93 or high octane is needed when advanced timing.

 

So what do you guys recommend when it comes to choosing the gas?

 

Im no mechanic by far, but I was reading around and I got two different answers, some said run low octane (87), some said run 93. I think you can run 87 on the car if you want to, but Ive always run 93, and last I heard you should run higher octane if your car is advanced. Thats what Im doing now.

 

yes if u advance timing extra octane is needed so as not to allow detonation

 

ok thanks you guys. I also heard if you run 87 with advanced timing, you get pre ignition. What happens during pre ignition?

 

you have 2 flame fronts that are burning and start melting things :P