As was stated earlier on the stock converter you're not going to get much better than what you've done. My car picked up half a second in the quarter mile after my Circle D converter went in. Oh and with 3.15's.
Circle D is a great convertor to get , I'm on E85 removed back seats , did front sway bar delete , 2018 intake , 52 lb injectors, jlt cai, tune, driveshaft shop aluminum one piece driveshaft, drag set up wheels , full spool rearend, etc and still 1.7 60ft and 11.8 1/4 mile (spinning in 2nd) I have a trans brake I haven't used yet but I've seen the results of the circle D convertors on other cars and it's worth the money, I need to get one - also have 3.73 gears when I installed them they made a huge difference
Hey Reddick,What rear tires are you running? With a good tire your blower set up should easily be able to cut low 1.6 or high 1.5s on pump gas with the stock converter.
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oh my bad i have forgotten to mention what fuel i'm running. 93 octaneWith that tire you should not be having traction issues. You mention your timing is capped at 14* but whats it seeing at 1100 RPMs when you launch? You should slowly be adding timing as the RPMs increase, amount is dependent upon fuel type. Also, please post what fuel you are running?