Pap's Pull AFPA 5-16-10 Test & Tune
a buddy puller worked out on it. he would not let anybody around to watch him. the only thing he would tell me is he put a gov spring that would go to 5200. he said make sure not to free rev it. we are guessing he helped it to get to around 575 hp anyway.
I was told that a 5xxhp 12 valve is >= a 8xxhp cr on the track. My truck made 585 rwhp at a dyno day, a cr that I pulled against made 70x hp on that same dyno and I have put 20 ft on him at the track.



