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Old 03-13-2004, 07:21 AM   #1 (permalink)
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ZO6 header dyno results

I was on the corvette Forum reading a post about the Dynatech header comparison to the LG headers. Here's an intersting thought, how about if we all paypal $20 to a willing header vendor, to cover associated costs with testing all the different available header brands on a bone stock ZO6 to end all this nonsense. We could look at area under the curve, peak hp and torque, and make an educated decision about our header purchase, for our intention. This should be unbiased as we can make it since every header manufacturer has made claim that their header system as very adequate if not the best on the stock ZO6. I know there will be the issue of which header is best once you make mods, but realistically every post I have read this one of the first mods, since that's the case that is my justification for using a bone stock vehicle to test all headers a vendor sells and any others willing to step up to the plate to be king of the headers. Let's take a count how many members are willing to donate that amount of money to see this. please keep a rolling count with your post.
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Old 03-13-2004, 07:28 AM   #2 (permalink)
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Old 03-13-2004, 09:50 AM   #3 (permalink)
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I would chip in if it would be an unbiased comparison. I would like to see it done also on a bone stock car.
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Old 03-13-2004, 10:28 AM   #4 (permalink)
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4 and i am willing to go to MTI have them test two systems on my car and i will buy the one that makes the highest power.. so that all they have to deal with is installation cost..
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Old 03-13-2004, 10:42 AM   #5 (permalink)
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Quote:
Originally posted by 2002Z06Yellow
4 and i am willing to go to MTI have them test two systems on my car and i will buy the one that makes the highest power.. so that all they have to deal with is installation cost..
wonder which one MTI will dyno second??
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Old 03-13-2004, 10:47 AM   #6 (permalink)
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huh? does it make a differenece which one is second?
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Old 03-13-2004, 10:49 AM   #7 (permalink)
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Originally posted by 2002Z06Yellow
huh? does it make a differenece which one is second?
ya, because if the first set ends up higher, that's going to be a pain in the arse labor wise to reinstall them.
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Old 03-14-2004, 07:06 AM   #8 (permalink)
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I will do the same, immediately buy the system that dynos overall the best, not necesarily peak hp, but best avg gain all the way through the range. If close I'll take the second place finisher from the test, when I make the other mods it won't make that much of a difference for me and my intended usage.
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Old 03-14-2004, 12:19 PM   #9 (permalink)
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Old 03-14-2004, 01:38 PM   #10 (permalink)
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IMO it really makes NO significant difference on what Header you buy. Regardless of the brand they ALL make about the same peak horsepower within 5 RWHP. The only header that seems to be the leader is the LGM long-tubes that give a little more grunt down at the lower RPM's and even saying that it's also a very small amount. To me the bottom line is buy the Header that fits you pocket book the best. Whether it's the 2800.00 handmade LGM or the 800.00 TPIS, or anything in between.

The only other consideration is if you have a big Cube Motor (427) then you need to go with a 17/8 header over a 13/4 to get maximum benefit.
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Old 03-14-2004, 02:14 PM   #11 (permalink)
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My car has been at MTI for a month now and this week it will get its 3rd set of headers.

With TPIS headers 494 rwhp 500 torque
With Dynatech headers 500 rwhp 511 torque
With Dynatech headers and FAST intake and 90mm TB 523rwhp and 531 torque.

This week it gets Kooks 1 7/8 headers



Testing on a bone stock car won't provide definitive answers for all combinations. Results may change exponentially with different results.
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Old 03-14-2004, 05:59 PM   #12 (permalink)
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Thanks for the info Joe, I agree that testing a stock configuration is not the anser for all combos. However it would provide the most consistent baseline, and considering many times it's the first mod it would be good to see the results without addition of other bolt ons.
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Old 03-14-2004, 07:32 PM   #13 (permalink)
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Quote:
Originally posted by GNX Guy


With TPIS headers 494 rwhp 500 torque
With Dynatech headers 500 rwhp 511 torque
With Dynatech headers and FAST intake and 90mm TB 523rwhp and 531 torque.

This week it gets Kooks 1 7/8 headers



6 RWHP gain from TPIS to Dynatech long tubes. I'm looking good so far I predict 530 RWHP with the 17/8 and the Fast intake.
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Old 03-15-2004, 06:13 AM   #14 (permalink)
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I agree - I'm trying to get people on board for a GP on the Dynatech Supermaxx system, and so many people are concerned about not having a bunch of dyno results. I'm not sure what people are expecting - the system will uncork the exhaust, it will produce more power, and likely - just as you said - will be within a few HP of all the other systems. I doubt a 5-10HP difference could ever be attributed soley to the header design because of all the variables: the car, the weather, the dyno itself, etc., etc.

I figured the Supermaxx product was a decent price for a full stainless system, had hi flow metal type cats, comes with everything you need for an install, is supposed to install fairly easily as headers go, and from a design perspective, are "long" which might mean a little more low end.

Just like this test - if the Kooks make more power, we'll know a 1-7/8 header makes more power than a 1-3/4" header on a highly built 427ci motor in TX and a day with X temp/humidity on Y dyno, operated by dyno guy Z, which will have no relevance at all to us whimpy stockers

Not to say I don't love hearing about Joe's continually escalating HP numbers! Especially the incremental bumps with the new intakes and whatnot. And I certainly appreciate all his contributions to the "knowledgebase" on this board!


Quote:
Originally posted by IT L GO
IMO it really makes NO significant difference on what Header you buy. Regardless of the brand they ALL make about the same peak horsepower within 5 RWHP. The only header that seems to be the leader is the LGM long-tubes that give a little more grunt down at the lower RPM's and even saying that it's also a very small amount. To me the bottom line is buy the Header that fits you pocket book the best. Whether it's the 2800.00 handmade LGM or the 800.00 TPIS, or anything in between.

The only other consideration is if you have a big Cube Motor (427) then you need to go with a 17/8 header over a 13/4 to get maximum benefit.
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Old 03-15-2004, 07:42 AM   #15 (permalink)
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Do you have any pricing for the Dynatech system GP?
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