Header extensions / torque tubes?
I run 2 inch primaries with 3 1/2 collectors. I gained MPH and more torque through a 3 1/2 H pipe and mufflers. 10.67 @128 through Mufflers 3650 lbs. without driver.
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I'm always amazed at you guys that run through mufflers and the performance you get. Just the added weight of the exhaust system alone says you've got some serious Wheaties under the hood. Those are also some great pictures of how you routed things. Very neat and clean as usual - thx for sharing. I know Don (
@B3422w5 ) runs exhausts as well and runs very hard. I run a 3" duals on the street but can't really tell about performance as the car is a smoke show with even mildly hammering it.
Wally (
@wkroncke17 ) - thx for reminding me of how I was taught of this trick probably 35 years ago. I had forgotten!!
I appreciate all of your guys input - that's why this forum is so useful for to me. Gain insight from others that "been there, done that." I'm just not sure if, given the stall speed of the TC, whether any increase in low-spped torque will help. This 408 really doesn't need help in the low speed area that my buttometer can detect but perhaps this might be an easy thing to try. I would likely go for a 3"x18" tube to start and shorten them from there if it seems warranted. And as Oldmanmopar shows, I'd want them to run through the trans xmember in the right locations so length may play a role there as well. Thx again for sharing your inputs!