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Thorley Header Project Update

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Old 03-30-2010, 08:40 PM
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Originally Posted by AlabamaGuy
Deep.
Old 03-30-2010, 08:48 PM
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My engine sounds much more smoother at idle now. It almost sounds like it's been de-camed!
IAT's are super low now, after sitting in traffic at a dead stop, and after letting the car sit for a while shut off. Seems like I'm going to get about 360 miles out of this tank. I normally get 320.
Old 03-30-2010, 08:53 PM
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Some questions.

Noticeable gains in HP/TQ?

Those that are having shops putting them on, how much labor are they charging?
Old 03-30-2010, 08:58 PM
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Originally Posted by havelegs
Some questions.

Noticeable gains in HP/TQ?

Those that are having shops putting them on, how much labor are they charging?
Powerband was definately moved north. The power is great on the butt dyno.
Old 03-30-2010, 09:03 PM
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Best power adder yet. First gear is useless and WOT downshifts are killer. First will spin the tires. Must be the added torque.
Anybody get tuned?
Old 03-30-2010, 09:21 PM
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Originally Posted by DavidGXP
Best power adder yet. First gear is useless and WOT downshifts are killer. First will spin the tires. Must be the added torque.
Anybody get tuned?
Going tomorrow. Will post results
Old 03-30-2010, 09:33 PM
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Originally Posted by AlabamaGuy
Wow, that sounds damn awesome. Nice and smooth through 2-3. What kind of exhaust is that, open cutout ??
Old 03-30-2010, 09:35 PM
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Originally Posted by williamGT
Well I'm pissed off, Car is supposed to go in tomorrow to get the headers on, my mechanic wants the car next week now, I took tomorrow off for nothing.
I WANT THEM ON SOOOO BAD!!!!!
I feel the pain , man. My mechanic is tied up this week, so he's doing it next Monday.
Old 03-30-2010, 10:50 PM
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Originally Posted by higsy
Wow, that sounds damn awesome. Nice and smooth through 2-3. What kind of exhaust is that, open cutout ??
True 3" mandrel into a spintech with side exit.
Old 03-31-2010, 08:10 AM
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Ok I want these, who wants to sell me them
Old 03-31-2010, 08:22 AM
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Originally Posted by havelegs
Ok I want these, who wants to sell me them
Call Thorley, maybe you can still get the group buy price. (If ya beg !! lol)
Old 03-31-2010, 08:45 AM
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Originally Posted by havelegs
Ok I want these, who wants to sell me them
If your serious you may want to contact member Mgpeagle (sp). He was been charged for two sets and only wanted one. Unless that has been corrected already. Good luck.
Old 03-31-2010, 09:43 AM
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They are going for 650? Let me see if I can dig some cash up. How hard is the install? Looks like some tight work space
Old 03-31-2010, 10:41 AM
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They finally corrected thier mistake. I have one set only for myself. I am glad they caught thier eff-up.

-Mike
Old 03-31-2010, 11:43 AM
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Originally Posted by DavidGXP
We dont have the gearing for more top end power so we need to focus on low to mid range power. Especially with a 4spd (2spd considering 2nd shifts into 3rd around 98-100mph!)
Swapping to 3.29's fixes that. With my fuel cutoff set at 6250 and a desired shift RPM of 6100 - 6150 (I'm still running the stock springs), I have to shift at 48 and 89 to keep from bouncing off the rev limiter at WOT. Combine that with our loose converter and you don't need to make big torque until 3000RPM. It's not like the we have so much traction that we need the bottom end torque for anything other than hill climbing.
Old 03-31-2010, 01:51 PM
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That video sounds great!
Old 03-31-2010, 02:40 PM
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Must be nice to have your guys headers already,Im still trying to get ahold of someone there to pay for mine!!! Ive talked to Eric,Nick and Ashley when theyve called but I was at work. Tried calling back and cant get ahold of any of them!!!!!

EDIT
Just got done playing phone tag,Finally got mine paid for and Ill see em Monday!!
CANT W8!!!!

Last edited by 91LT16SpeedFormula; 03-31-2010 at 03:19 PM.
Old 03-31-2010, 04:03 PM
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Originally Posted by nmp0098
Swapping to 3.29's fixes that. With my fuel cutoff set at 6250 and a desired shift RPM of 6100 - 6150 (I'm still running the stock springs), I have to shift at 48 and 89 to keep from bouncing off the rev limiter at WOT. Combine that with our loose converter and you don't need to make big torque until 3000RPM. It's not like the we have so much traction that we need the bottom end torque for anything other than hill climbing.
I think changing the converter on this car is a mod someone needs to crack now that we have headers and some proposed intake designs. This car needs to have its powerband redefined...much more aligned to a well breathing LS1 or something.
Old 03-31-2010, 07:51 PM
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Originally Posted by havelegs
Some questions.

Noticeable gains in HP/TQ?

Those that are having shops putting them on, how much labor are they charging?
I was gonna have an exhaust shop put them on for me,but they wanted $600 flat for install.so since easter is around the corner,ill be installing them in 2 week at my bro house(save my self $600).

Just got to get new gaskets and header bolts,rather not put the stock gaskets or bolts.once I get the headers in ill have my exhaust done and be set to be a family car with *****...
Old 03-31-2010, 08:23 PM
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So I'm taking my car to a different guy, be in on Tuesday now, Can't wait!!!!


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