Callaway mods
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Joined: Oct 2007
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From: Loudoun County VA
Callaway mods
I have a 2007 C6 M6 Z51 Coupe. I'd like to add some mods strickly for street use:
Honker Air Intake
Double D Exhaust
Tubular Headers
Reportedly these mods will add 47HP. Anyone have experience with Callaway, specifically these mods?
Thanks,
Bill
Honker Air Intake
Double D Exhaust
Tubular Headers
Reportedly these mods will add 47HP. Anyone have experience with Callaway, specifically these mods?
Thanks,
Bill
Cruising
Joined: Dec 1999
Posts: 14
Likes: 0
From: Burbank CA
Callaway is superb.
I have the Double D, Honker and the Callaway Supercharger on my C5 Z06. Could not be more pleased. It does everything they said it would: 560hp, reliable and faster than a C6 Z06.
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
I don't have any experience with these specific mods but I have a friend with a highly modified 'full race' C6 (C5R big block engine, etc.) that has a Honker intake. He's a serious racer and likes the Honker intake well enough. Callaway has an excellent reputation for their performance mods. Many people don't seem to like the appearance of the "DD" exhaust and I know nothing about "Tubular" (brand?) headers...are they true long tube headers? Shorty headers don't deliver much in the way of performance gains for the money.
No matter what one prefers there is no question Callaway has an excellent reputation for quality, performance modifications. If they say you'll get 47 horsepower, I would tend to believe them. You can always have them do a before and after dyno to see exactly what you gained.
No matter what one prefers there is no question Callaway has an excellent reputation for quality, performance modifications. If they say you'll get 47 horsepower, I would tend to believe them. You can always have them do a before and after dyno to see exactly what you gained.
Racer
Joined: Aug 2001
Posts: 451
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From: Ft Lauderdale Fl
I'm a long time customer (with my 1991 Twin Turbo) and soon to be again with a 2008 C16.
They are an engineering company
World Record holders and builders of fine automobiles. You can't go wrong with Callaway parts and service.
-Luigi
They are an engineering company
World Record holders and builders of fine automobiles. You can't go wrong with Callaway parts and service.-Luigi
Thread Starter
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Joined: Oct 2007
Posts: 79
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From: Loudoun County VA
Thanks for the feedback. I remember living in CT not far from Callaway and dreaming of taking my 96 Chevy SS Impala to them - never happened, kids, work, blah, blah, blah.
However, I'm on my second vette and want to stop dreaming. I'm looking into a certified Chevy/Callaway dealer in PA to do the modes as I want to keep the warranty whole. Have asked for a quote and timing.
The dealer states that demand for Callaway supercharger mods are outstripping Callaway's forecast and the headers might not be available.
Thought I read where the headers are long tubes - need to make sure.
Again thanks for the feedback.
Bill
However, I'm on my second vette and want to stop dreaming. I'm looking into a certified Chevy/Callaway dealer in PA to do the modes as I want to keep the warranty whole. Have asked for a quote and timing.
The dealer states that demand for Callaway supercharger mods are outstripping Callaway's forecast and the headers might not be available.
Thought I read where the headers are long tubes - need to make sure.
Again thanks for the feedback.
Bill
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Burning Brakes
Joined: Feb 2005
Posts: 1,099
Likes: 1
From: Branford Connecticut
Thanks for the feedback. I remember living in CT not far from Callaway and dreaming of taking my 96 Chevy SS Impala to them - never happened, kids, work, blah, blah, blah.
However, I'm on my second vette and want to stop dreaming. I'm looking into a certified Chevy/Callaway dealer in PA to do the modes as I want to keep the warranty whole. Have asked for a quote and timing.
The dealer states that demand for Callaway supercharger mods are outstripping Callaway's forecast and the headers might not be available.
Thought I read where the headers are long tubes - need to make sure.
Again thanks for the feedback.
Bill
However, I'm on my second vette and want to stop dreaming. I'm looking into a certified Chevy/Callaway dealer in PA to do the modes as I want to keep the warranty whole. Have asked for a quote and timing.
The dealer states that demand for Callaway supercharger mods are outstripping Callaway's forecast and the headers might not be available.
Thought I read where the headers are long tubes - need to make sure.
Again thanks for the feedback.
Bill
Thanks for considering Callaway products.
Callaway stopped manufacturing headers early in 2007. They were short tube style. We have some C5 headers left in stock, but no C6 sets remain.
We stopped building short tube headers because they only added 8 bhp or so on a stock LS2 and we couldn't justify asking anyone to spend $1,350 for this level of performance gain, or adding $1,350 plus installation cost to the Callaway Corvette packages. Because we built the headers at our Old Lyme factory, in relatively low volume, we weren't able to reduce the price to something more justifiable. We decided to use the manufacturing resources elsewhere.
While long tube headers are generally known to increase horsepower, unfortunately, Callaway cannot manufacture, sell, or even recommend them for street driven 1996 - up Corvettes. Since they relocate the OEM catalytic converters, the EPA (federal Environmental Protection Agency) considers long-tube header installation to be "Tampering" and in violation of the Federal Clean Air Act. The EPA also considers Callaway to be a "low-volume vehicle manufacturer", so they scrutinize us much differently than tuners, installers and do-it-yourselfers.
Last edited by mcv; Dec 30, 2007 at 05:06 PM.
Thread Starter
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Joined: Oct 2007
Posts: 79
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From: Loudoun County VA
BTW, thanks for all the replies. You guys are a wealth of knowledge and experience. I am amazed at the level of analysis, mods performed and accompanying documentation by members of this forum.
However, it doesn't seem price worthy, as stated by Mike, to add short tube headers, although I'm open to more input.
Given my novice status, I need to ask: does it make sense to add a new exhaust system, e.g., DD from Callaway, with out headers?
I'm all ears if you have more ideas on how to get an addtional 50bhp without breaking into the engine. I'm interested in 1) HP, 2) keeping the warrantly whole and noise is third in priority and I'm "tune" reluctant.
Thanks in advance,
Bill
However, it doesn't seem price worthy, as stated by Mike, to add short tube headers, although I'm open to more input.
Given my novice status, I need to ask: does it make sense to add a new exhaust system, e.g., DD from Callaway, with out headers?
I'm all ears if you have more ideas on how to get an addtional 50bhp without breaking into the engine. I'm interested in 1) HP, 2) keeping the warrantly whole and noise is third in priority and I'm "tune" reluctant.
Thanks in advance,
Bill
Le Mans Master
Joined: Oct 2000
Posts: 6,483
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From: Sausalito CA
I love my shorty headers and the price was worth it for the weight savings, tone and look.
I reside in California, so the shorties with the non moving of the cat location was the only option with the current smog tests.
Glad I bought them before the desicion not to manufacture was made.
I reside in California, so the shorties with the non moving of the cat location was the only option with the current smog tests.
Glad I bought them before the desicion not to manufacture was made.
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
I love my shorty headers and the price was worth it for the weight savings, tone and look.
I reside in California, so the shorties with the non moving of the cat location was the only option with the current smog tests.
Glad I bought them before the desicion not to manufacture was made.
I reside in California, so the shorties with the non moving of the cat location was the only option with the current smog tests.
Glad I bought them before the desicion not to manufacture was made.
Thread Starter
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Joined: Oct 2007
Posts: 79
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From: Loudoun County VA
Next step:
1) Researching resutls/experience of installing a larger throttle body and larger intake manifold in addition to the Honker and DD's from Callaway, e.g., net HP gain, performance, your experience with similar mods.
2) Also I'm trying to understand the difference between a "recal" and "hyperchip" tune.
3) And the impact to warranty of the larger throttle body, larger manifold and recal tune mods.
(Given all the legal mumbo jumbo LT headers are off the table)
I'm looking forward to reading your posts nos. 1, 2 and 3.
Bill
1) Researching resutls/experience of installing a larger throttle body and larger intake manifold in addition to the Honker and DD's from Callaway, e.g., net HP gain, performance, your experience with similar mods.
2) Also I'm trying to understand the difference between a "recal" and "hyperchip" tune.
3) And the impact to warranty of the larger throttle body, larger manifold and recal tune mods.
(Given all the legal mumbo jumbo LT headers are off the table)
I'm looking forward to reading your posts nos. 1, 2 and 3.
Bill
Melting Slicks
Joined: Nov 2006
Posts: 2,463
Likes: 2
From: Santa Barbara, CA
The Callaway Honker is the best intake available as far as I know. There is a very reputable tuner in NorCal that has has done back to back tests with other brands. I am just re-iterating his objective opinion. He said "The Callaway one just works". It has a lot to do with the way the intakes shape creates VELOCITY of the air as it's coming into your intake. I'd highly recommend them.
Racer
Joined: Nov 2005
Posts: 361
Likes: 2
Next step:
1) Researching resutls/experience of installing a larger throttle body and larger intake manifold in addition to the Honker and DD's from Callaway, e.g., net HP gain, performance, your experience with similar mods.
2) Also I'm trying to understand the difference between a "recal" and "hyperchip" tune.
3) And the impact to warranty of the larger throttle body, larger manifold and recal tune mods.
(Given all the legal mumbo jumbo LT headers are off the table)
I'm looking forward to reading your posts nos. 1, 2 and 3.
Bill
1) Researching resutls/experience of installing a larger throttle body and larger intake manifold in addition to the Honker and DD's from Callaway, e.g., net HP gain, performance, your experience with similar mods.
2) Also I'm trying to understand the difference between a "recal" and "hyperchip" tune.
3) And the impact to warranty of the larger throttle body, larger manifold and recal tune mods.
(Given all the legal mumbo jumbo LT headers are off the table)
I'm looking forward to reading your posts nos. 1, 2 and 3.
BillHave you asked Callaway about their supernatural package for the C6?
With the loss of the short headers, you may want to ask about the availability of it, but it was offered at 490 horsepower
Thread Starter
Advanced
Joined: Oct 2007
Posts: 79
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From: Loudoun County VA
I hear ya. Getting to the 490ish HP straight from the broucher: requires the addition of CNC-ported heads, high ratio rocker arms, a hydraulic roller cam plus the Honker and DD's sans the headers.
Again, being the novice, I guess my question is, if you can't make her exhail, i.e., add headers, what's the real value of the heads and cam?
Looking forward to hearing some feedback on the larger throttle boddy, larger intake manifold and the PCM recal vs hyperchip questions.
Thanks,
Bill
Again, being the novice, I guess my question is, if you can't make her exhail, i.e., add headers, what's the real value of the heads and cam?
Looking forward to hearing some feedback on the larger throttle boddy, larger intake manifold and the PCM recal vs hyperchip questions.
Thanks,
Bill
Racer
Joined: Nov 2005
Posts: 361
Likes: 2
I hear ya. Getting to the 490ish HP straight from the broucher: requires the addition of CNC-ported heads, high ratio rocker arms, a hydraulic roller cam plus the Honker and DD's sans the headers.
Again, being the novice, I guess my question is, if you can't make her exhail, i.e., add headers, what's the real value of the heads and cam?
Looking forward to hearing some feedback on the larger throttle boddy, larger intake manifold and the PCM recal vs hyperchip questions.
Thanks,
Bill
Again, being the novice, I guess my question is, if you can't make her exhail, i.e., add headers, what's the real value of the heads and cam?
Looking forward to hearing some feedback on the larger throttle boddy, larger intake manifold and the PCM recal vs hyperchip questions.
Thanks,
Bill
Your belief then, is that you cannot make any more power with stock manifolds.
Or at least, that is how it reads to me.Look at the supercharged Callaway Corvettes, they use manifolds on one package, that makes 560 horsepower
Sounds like they flow 
Your concern is emissions compliance from what I read, right? So long tubes, which are clearly more efficient that manifolds, are out.
Again, a package might not be a bad way to get to your goal, versus piecing something together on your own
Racer
Joined: Nov 2005
Posts: 361
Likes: 2
I Googled the supernatural 490 phrase and while some of the links tied back to a zr1 option Callaway did in the 1990s with the same moniker, I did find this webpage with information of the package
http://www.callawayownersgroup.com/C...ember/cotm.htmIt does include the Honker and an intake manifold change
