bumping timing?!?!
Reply #25 –
My t-bird loved 16* of base timing and never pinged on 87 octane(at least it wasn't audible) and it ran even better on 93 when I took it to the track...but running that much timing on regular will cause problems...when I pulled the heads off the 'Bird, cyl #3 had a nice rich green hue to it, but it never let out even a puff of smoke.
If you put a set of aluminum heads on, you'll need to back your timing off a little...same with higher compression ratios.
As everybody else said, every car will want something a little different...I would say to start off with no more than 14* on 93 and go from there.