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I think here's the weakest link. Put my guess in the 560HP/530TQ range.

Schoenfeld 1 5/8" 1 3/4" step headers with a 3.5 to 3" hillbilly merge




Consider it noted. I think your guess is quite sound according to my experience with the 4" arm combo. J.Rob




I don't think the header size is that big of a deal. Everybody thinks they need a 1 7/8" header with a striker but I usually see a huge hole in the torque curve with them. The extra couple of horsepower up top with bigger headers may not be worth the loss down low.....




Definately not worth the loss down low or worse a hole in the TQ curve. Hope your right. J.Rob


2009 PHR\EMC Competitor
2010 PHR\EMC Competitor
2011 PHR\EMC Competitor
2012 PHR\EMC Competitor
2013 PHR\EMC Competitor
2014 HotRod/EMC Competitor
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2016 HotRod/EMC 3rd place SPEC Bigblock
2018 HotRod/EMC 7th place G3