ssalltheway Posted March 22, 2013 Report Share Posted March 22, 2013 i have short headers now they sound good but how much more hp give longtubs? Quote Link to comment Share on other sites More sharing options...
kelleyperformance Posted March 22, 2013 Report Share Posted March 22, 2013 lets just say the shorties dont do anything that youd see on a dyno (at least compared to the stock LQ9 manifolds)... so your basically going to get the same gain as if you went from stock to long tubes lol. we typically see (on stock 6.0's) about 35-45 WHP with a tune + LT headers only (with cats and cat-back). thats a nice gain if you ask me! the pacesetter headers are the cheapest and by far the most popular amongst GM truck guys here, but are not stainless and do not survive so well up in northern areas especially places that salt the roads. getting them ceramic coated helps a lot but still, you get the idea. they also dont sell bolt-on mid pipes, so an exhaust shop will need to weld them in. then you have dynatech, which are also popular but pretty expensive... nice product though, and they offer 100% bolt-on kits with and without cats. OBX is also very popular, its basically a knock-off of the older dynatechs just much much less $$$. there are a few other sets of headers for the SSS but those are the most popular/sensible. also keep in mind if your under 500 WHP or so, i definitely would stick to the 1 3/4" primaries headers. they will work better for your TQ curve (all the above mentioned headers come 1 3/4") John Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted March 22, 2013 Report Share Posted March 22, 2013 Agreed, Shortie headers are for ground clearance and torque gains. Longtubes will give you more HP and a torque curve. Quote Link to comment Share on other sites More sharing options...
Muggs Posted March 22, 2013 Report Share Posted March 22, 2013 Agreed, Shortie headers are for ground clearance and torque gains. Longtubes will give you more HP and a torque curve.^^very well said^^ Quote Link to comment Share on other sites More sharing options...
ssalltheway Posted March 23, 2013 Author Report Share Posted March 23, 2013 lets just say the shorties dont do anything that youd see on a dyno (at least compared to the stock LQ9 manifolds)... so your basically going to get the same gain as if you went from stock to long tubes lol. we typically see (on stock 6.0's) about 35-45 WHP with a tune + LT headers only (with cats and cat-back). thats a nice gain if you ask me! the pacesetter headers are the cheapest and by far the most popular amongst GM truck guys here, but are not stainless and do not survive so well up in northern areas especially places that salt the roads. getting them ceramic coated helps a lot but still, you get the idea. they also dont sell bolt-on mid pipes, so an exhaust shop will need to weld them in. then you have dynatech, which are also popular but pretty expensive... nice product though, and they offer 100% bolt-on kits with and without cats. OBX is also very popular, its basically a knock-off of the older dynatechs just much much less $$$. there are a few other sets of headers for the SSS but those are the most popular/sensible. also keep in mind if your under 500 WHP or so, i definitely would stick to the 1 3/4" primaries headers. they will work better for your TQ curve (all the above mentioned headers come 1 3/4") John ok i'm still under 500 WHP should i go with 2 1/2" or 3" pipe all the way back Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted March 23, 2013 Report Share Posted March 23, 2013 You'd be fine with the 3" all the way back. Quote Link to comment Share on other sites More sharing options...
f1ss Posted March 23, 2013 Report Share Posted March 23, 2013 There is a sale on Dynatech Supermaxx LT headers on Autoanything (Supermaxx more expensive than OBX, but with this rebate their only $700ish), I was sent this info through email. I believe the sale runs through the end of the month, not sure. Might want to check out that site. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted March 23, 2013 Report Share Posted March 23, 2013 2-1/2 inch pipe, dual 3 inch is too big for a near stock motor with bolt ons..... Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted March 24, 2013 Report Share Posted March 24, 2013 It gives room for growth and future mods, otherwise the exhaust would have to be done again.... Quote Link to comment Share on other sites More sharing options...
radoss05 Posted March 25, 2013 Report Share Posted March 25, 2013 There is a sale on Dynatech Supermaxx LT headers on Autoanything (Supermaxx more expensive than OBX, but with this rebate their only $700ish), I was sent this info through email. I believe the sale runs through the end of the month, not sure. Might want to check out that site. 03mass could you post up the link went over to the site but nothing around that price. Tks in advance Quote Link to comment Share on other sites More sharing options...
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