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FED 387 · 12-08-2010, 12:13 PM

OK so ya try to psych em out huh???--anyway we have both 520 USA heads 520T heads and a pair of Canadian 520 heads available---of the 3 heads which head "might" be the best head performance wise and which head would you flow first to see if it is/was better than the other 2--follow your thinking on the 461x vs 461 head can see the difference there, there is definately a difference in the port sizes but is there a disimilarity between the 3 "types" of 520 heads even tho they all carry the same part number or is it just something imagined. thanx FED387

12-08-2010, 12:13 PM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,422 Likes: 530 Liked 333 Times in 180 Posts	Re: 520T heads ??? OK so ya try to psych em out huh???--anyway we have both 520 USA heads 520T heads and a pair of Canadian 520 heads available---of the 3 heads which head "might" be the best head performance wise and which head would you flow first to see if it is/was better than the other 2--follow your thinking on the 461x vs 461 head can see the difference there, there is definately a difference in the port sizes but is there a disimilarity between the 3 "types" of 520 heads even tho they all carry the same part number or is it just something imagined. thanx FED387