Maybe a dumb question but im not really sure whats a good timing to run on our trucks. Dynoed at 390 and 490 running 93 oct with 18* timing. Motor and fuel is stock but is this a safe timing. Seems a bit high to what everybody else is running. I see alot of 14* for street. A/F is 13.4 at WOT. What do you guys recommend. Should i get this changed? :shrug:
Timing
- Thread starter ~CASPER~
- Start date
I've been told that 13.4 a/f is in the danger zone should be somewhere in the 11s.....Timing from what I've heard should be around 14* on a conservative tune.. I am no expert on this tho, since I am fighting my own problems with my truck!! Just repeating what I have been told. :shrug:
Ryan
Ryan
That looks wayyyy better!
With that a/f and 14* timing you should be pretty close..... From what I've heard.. ;-)
Ryan
With that a/f and 14* timing you should be pretty close..... From what I've heard.. ;-) Ryan
You can bump the fuel a little but 18* is pretty hot. I run 18* at the track if Im running just motor and 12* on the juice. 11.5 is pretty safe
Pewter99TransAm
New Member
Yea Im runnin 11.2 air/fuel and 14 degrees of timing. Made 410/520 in 90 degree weather. Gonna add bout 3 degrees and 100 octane for the track this week.
11.4:1 A/F is pretty conservative. Ideal is 11.7:1 WOT A/F . You do not want over 12.0:1 even though some guys have their race tunes set around 12.2:1 but it is cutting it close. Why take a chance? Looks like your in a state that seves 93 or 94 octane as premium grade; so you should be safe with 15* timing on your street tune, but I wouldnt go over that IMHO. 18* is way overboard for a street tune and you should get it adjusted.... my .02 cents, Stan
93 octane 16* DD tune for 2 years and 18* sometimes with no issues. A/F @ 11.6-11.8 always. This was on the stock motor as well.
You can adjust it via global spark or in 1-3.5K and 3.5-6K rpm ranges. The easiest would be to remove it from global spark which removes timing throughout the curve not just WOT. I think if you add/remove it under WOT rpm range it only removes peak timing but I'm not 100%. It will not affect a/f but you will notice a slight loss in throttle response and you will lose minimal power.
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