Quote:
Originally Posted by aldaron327
Yeah, as long as the spark plugs don't pop out like they're prone to do on those heads. Something about the spark plug holes being tapped to only 2-3 threads deep makes that happen. My buddy has the choice of either putting new heads on OR putting new heads on. So yeah, those are fast....until they lose a spark plug or two.   |
That is a very rare problem.
I have seen the cars handle over 700rwhp for years, still going today, without ever having to take the heads off the car. A few are 800+rwhp without ever removing the heads. The 03/04 Cobra motors are the strongest motors ever put in a factory pony car.