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rx dealer · 07-01-2013, 02:09 PM

Hi Murph..I just finished dyno my 350-255 SS engine. I"m using a hooker 3 step headers with hooker collector and 11 inch extension on the dyno only. i switched to the burns collector and to my surprise no horsepower gain but a 3 pounds of torque gain made on average and then the 11 inch extension was added and no additional gain... I hope this helps...what type of header are you using?...Luke SS 311

07-01-2013, 02:09 PM	#3
rx dealer Member Join Date: Mar 2007 Location: Lake Orion, Michigan Posts: 337 Likes: 12 Liked 53 Times in 13 Posts	Re: header collectors Hi Murph..I just finished dyno my 350-255 SS engine. I"m using a hooker 3 step headers with hooker collector and 11 inch extension on the dyno only. i switched to the burns collector and to my surprise no horsepower gain but a 3 pounds of torque gain made on average and then the 11 inch extension was added and no additional gain... I hope this helps...what type of header are you using?...Luke SS 311