B barnett468 Active Member Aug 1, 2014 179 24 28 Aug 3, 2014 #21 Aug 3, 2014 #21 you can not make 390 rwh with that cam in a 331, who said you could? what rpm was the hp at? did they try to adjust your timing? what is your total timing? you will benefit from a multi fire ignition box. Last edited: Aug 3, 2014
you can not make 390 rwh with that cam in a 331, who said you could? what rpm was the hp at? did they try to adjust your timing? what is your total timing? you will benefit from a multi fire ignition box.
madspeed Colonel Mustard Founding Member Nov 29, 1999 8,914 1,331 204 a van down by the river Aug 3, 2014 #22 Aug 3, 2014 #22 No experience with them, I was only sharing the info
