Actually, long tube hedders increase torque down low, shorties increase up higher. For reference you can go to
www.dynomax.com/ and look in the headers section. You increase the length of the primary tubes to increase low end torque. I've been thinking about some long tubes and was wondering if there were any other 4.6 owners running these and what they thought of them. I've talked to one that loves them. Anyone else running them? BTW, I already have 3.73s. Read my sig for more.
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1996 Mustang GTS