No prob. If we had a way to tune this truck ourself, I think he would have more in it. Its running a 14.3 w/the tailgate down and it makes no real diff if the spare is on it or not from what we have seen. It runs that 14.3 very consistent. I told him I think it has a 13.9 in it. I think if the spare is out and take the back seat out that might help us some. Plus, all of his shifts are at 5900 and he has asm lontubes and 218/222 cam, i think that the 1-2 should be around 6100 and the 2-3 should be 62-6300 at least bu who knows. My 97 vortec 350 pulls all the way to 5500 w/my superchips so i know that a gen III w/ a cam can pull more than 400 more. I would like to see a sub 2.0 60' w/his truck too, I think the lowest we got was around 2.04 or something close to that.

 

He still has some efans to put on too, i forgot to mention that, thats how i came up w/a 13.9.

 

One thing that may be an argument to thinwall SS headers vs the cast OE manifolds, is that the cast headers will retain more heat in them, thus aiding spoolup by keeping up the exhaust velocity.

If one actually had the cash to do a before and after comparison, that would be great to put an end to a debate. I personally thinkthere would be gains, however as the price point of ASM's and TOG's the gains may not be worth it. (but hey thats where Pacesetters come in)

 

Thats a good point that i really havent thought about, I wonder how much temp it looses.

 

Similar answers from a Dodge perspective. My buddy with a RCSB and my ECSB dynoed immediately after the STS install. He has long tubes ( Thorley's ) and 4.56 gears vs my stock items.
8 HP difference in results. He normally was 30HP above me NA.
The headers will give you some increased low end torque before the turbo spools up and better exhaust velocity. A supercharger will definitely benefit from headers more than the turbo.
Lots of turbo folks sell their headers to recoup some cash. Others get tired of exhaust leaks which WILL impact turbo performance.

 

jcfreak has a set up similar to mine the only difference being I have the ASM and 1.85 rocker arms. He has a gt60 and I have the gt 67. At 5 psi he made 349. At the same boost my truck made 400. I would tend to believe the headers are helping more than the rocker arms.

 

Sorry I did not clarify Beeftip. I meant rwhp and tq #s.

 

That is not an apples to apples comparison. different turbo's, rocker arms, and headers are HUGE.

 

My 6.0 (all-wheel drive which loses much more power at the wheels) made around 370hp at 5psi, on 20" rims. All stock manifolds. I'm not sure how good of a comparison that would be though. After today, I should be around 500awhp on 9lbs of boost!

 

Oh gotcha. We have never dynoed his truck like it sits now, we havent found a dyno that has a long enough wheel base since he is AWD. If you know of any in GA that would be somewhat local we would def. appreciate it.