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Old 12-08-2004, 03:01 PM   #1
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Default Another header question

With the freeing up of the exhaust flow that comes with headers, don't you lose a lot of bottom - end torque. I've already lost some with my larger exhaust system. Would the increase in HP be worth the loss in bottom-end grunt?
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Old 12-08-2004, 06:16 PM   #2
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since you have a n/a car i would recommend the *&* headers, they have 1.5" primaries as compared to the togs or the slp'* that have 1.625" primaries. ive heard nothing but good things about puttin headers on the series 2 motor
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Old 12-08-2004, 06:40 PM   #3
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I think the only way to find out for sure would be track runs or dyno to see where the power shifted to.
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Old 12-08-2004, 08:07 PM   #4
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It'* not a bad mod at all. But you should really to mods to compliment it so your not dissapointed. Stuff like a cam, or rockers and a hvii all move your powerband up to where headers will help you out.
If your on a mission to get close to 13s or possibly into the high 13s then i'd say do it. but if not, save some money, and get GOOD pems with a cut and welded rear mani.

BTW, what shift kit do you have? You've got a 4T60-E right? What gears do you have?
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Old 12-09-2004, 06:15 PM   #5
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4T60-E, yes. I dont know who the manufacurer of the stage one shift kit is, but the gearing is stock.
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Old 12-10-2004, 01:51 AM   #6
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you wont lose torque, the powerband is just changed. Headers are a great addition to any motor, they make it much more efficient.
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Old 12-10-2004, 02:10 AM   #7
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Quote:
Originally Posted by macho_mike21
you wont lose torque, the powerband is just changed. Headers are a great addition to any motor, they make it much more efficient.
You will loose low end torque to gain more high end power. But without a cam or rockers you won't be seeing any of this high end power any time soon.
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Old 12-10-2004, 02:12 AM   #8
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Quote:
Originally Posted by merlin
4T60-E, yes. I dont know who the manufacurer of the stage one shift kit is, but the gearing is stock.
Ohh, by the gearing question i wasn't sure what your car came stock with. Is it a 3.06 final drive?
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Old 12-10-2004, 11:44 AM   #9
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Headers give you a power jump everywhere, if made right. They must "help out" or "scavenge" well with other cylinders, having lengths timed just right, to pull exhaust out as good as possible.
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Old 12-10-2004, 06:56 PM   #10
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Quote:
Originally Posted by 95naSTA
Quote:
Originally Posted by merlin
4T60-E, yes. I dont know who the manufacurer of the stage one shift kit is, but the gearing is stock.
Ohh, by the gearing question i wasn't sure what your car came stock with. Is it a 3.06 final drive?
I really don't know to be honest. Anyone?
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