cobra stumbles a little when hot

[shortmarty]

04 cobra stumbles a little when accelerated hard in 3 rd gear at about 45 to 55 when car is hot.mods are 2.93 upper 8.6 lower cold air intake ,h pipe and exhaust.car still has stock intercooler coolant tank which somtimes leaks coolant at cap under hard acceleration .do I need a a bigger tank?

 

[03cobra#694]

Might want to put this in the " Terminator " section.

 

[CobraBob]

You have a stock (unported) Eaton with a 2.93 upper and 8 or 6 lb. lower? That's more boost than the Eaton can efficiently handle. If your blower isn't ported, you should do it very soon. Then you'll be able to better handle boost above 16 lbs.

As far as the coolant leak, you might have air in the system. Have you done any cooling system work recently? Added coolant? If so, did you burp the system after doing the work?