Challenger Performance Mods - Engine - 6.1L HEMI
I have a 2009 STR8. The motor (and everything else) has been completely redone with a top end build by Petty’s Garage. She dyno tested 668RWHP and roughly 800HP at the crank. Respectable numbers; or so I thought until I took my car out to a half mile top speed shoot-out. I was red lining 4th...