When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
there's a combination of things that can "help," but don't expect to break 12's or 13's w/o boost.
-the lighter the better...not run on a full tank. remove un-needed weight (ie donut tire, tools, stuff laying around in car.
-high octane gas
-cooler ambient temp
-release some air from tires
-squeeze (nitrous oxide...aka nos)
-practice...practice...practice...getting used to the Christmas tree and having a good reaction time. you want to have a RT as close to .500 as possible.
as far as mods, we're still limited. there are ppe headers available, better flowing intake (stock filter element is very restrictive), better midpipe. stillen is currently r&d'ing a supercharger now.
there are other things that can be done, but items listed are probably a quick and easy tasks to look at.
I think you can run lower with 1/4 gas tank, TC off and lower rear tire pressure. Have you try with sport + mode on? Custom midepipe and PPE header will help.
Use the DA calculator on drag times to get your corrected times.
Also, I thought lowering rear tires got you off the line quicker but redcued top end speed due to more resistance.
As for OP, work on your launch. I really think sub-2 second 60' time should be possible in a 350.