that could be attributed to crazy arse owners using canned tunes that are not dialed in on some of these bolt on twin screw blowers or when guys start slapping on nitrous, making a dozen drag runs and then start asking, gee my car is not running so good anymore, should I have changed my tune for the juice??? Probably before you melted your pistons might have been a better choice! I think the stock cobra bottom is good to at least 600hp, untouched as long as the heat dissipation problem these angry little hornets have, is delt with properly, IMHO. Call Eric at Precision Fabrication, great guy, master tig welder: PFab Coolant tanks and custom welding - 04_snake
Actually the reason the pistons don't hold up under very high HP levels is due to the minimal size of the ring lands. Ford had to make a trade off between strength and emissions. That coupled with the massive amount of heat generated on a high HP blown application. U.M.
