[Z06] JBA headers on
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Safety Car
Joined: Dec 2006
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From: NC
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JBA headers on
Several weeks ago I asked fellow forum members about JBA headers for the z06. Got several replies so I wanted to report on my expierence. Installed last week and could feel a difference. Not 30 HP but still not bad for shorty headers. I weighed the stock manifolds and saw about 20 pounds each. The shipping weight on the box the shortys came in was 25 pounds including a rather large box. So saving weight was a bonus. I may have a tune done as well but even without I was pleased with the results. So don't be to quick to discount shortys they do add power just not as much as the long tubes.
Safety Car
Joined: Sep 2003
Posts: 3,692
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From: Hayward CA
Did you get a baseline dyno? I'd like to see proven before and after dyno tests for shorty headers. If I could get at least 10rwhp from them, I might consider getting some.
Last edited by TM-Z06; May 26, 2007 at 03:36 PM.
Thread Starter
Safety Car
Joined: Dec 2006
Posts: 3,936
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From: NC
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C7 of the Year Finalist - Unmodified
2019 C6 of Year Finalist (performance mods)
I talked with the tech guys at JBA and they said you could count on at least 10 with out a tune and as much as 25 with tune. My car has Indy cat back, vortex cold air, and superchips hand held programmer. (03 Z06). On the first shift from 1st-2nd I knew I had more power and better throttle response. Can pull away from stop in third gear and overall more power. But to answer your question no I did not have a baseline no real proof as far as numbers go. Tech guys at JBA say they have f bodies running their shortys and head cam pkg. and putting down 430 at the wheels all smog legal. I am impressed with their product.
Melting Slicks
Joined: Jan 2007
Posts: 3,103
Likes: 7
From: Sandy Ego Ca.
Ive always contended that a pair of shorties...used shorties were worth the money spent..Im not so sure on buying a new set...a litttle low on th e $$ spent/gain ratio..but used..great bargin
Thread Starter
Safety Car
Joined: Dec 2006
Posts: 3,936
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From: NC
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C7 of the Year Finalist - Unmodified
2019 C6 of Year Finalist (performance mods)
Yeah that is true best to find a used set and I would stay with JBA or B & B. Heard good things about both of these.
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Drifting
Joined: May 2004
Posts: 1,822
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From: San Clemente CA
Thanks for the report! 
I installed a Corsa Indy cat-back last weekend, and along with the Magnaflow X-pipe I installed a couple of years ago, the shorties will be next on the list for exhaust. Here in the land of the smog-police, we're relegated to shorties unless we want to endure header swaps every couple of years. Sounds like a reasonable investment if one can find a good used set!
I installed a Corsa Indy cat-back last weekend, and along with the Magnaflow X-pipe I installed a couple of years ago, the shorties will be next on the list for exhaust. Here in the land of the smog-police, we're relegated to shorties unless we want to endure header swaps every couple of years. Sounds like a reasonable investment if one can find a good used set!
Burning Brakes
Joined: May 2007
Posts: 829
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From: San Francisco CA
They made a difference on my car,I could spin second from a dead stop without dumping the clutch ,just by rolling into the throttle.My dyno #s seem pretty much in line with a lot of the LT guys.Plus with my exhaust combo I get a lot of people tell me it's one of the best sounding cars they've ever heard.
Thread Starter
Safety Car
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From: NC
2025 Corvette of the Year Finalist - Unmodified
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2023 C7 of the Year Finalist - Unmodified
2019 C6 of Year Finalist (performance mods)
They made a difference on my car,I could spin second from a dead stop without dumping the clutch ,just by rolling into the throttle.My dyno #s seem pretty much in line with a lot of the LT guys.Plus with my exhaust combo I get a lot of people tell me it's one of the best sounding cars they've ever heard.
Burning Brakes
Joined: May 2007
Posts: 829
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From: San Francisco CA
2005 GTO M6 Impulse Blue
JBA Headers/Catless bullet Mids, X-Pipe & Borla XR-1s, Powerbond U/D Pulley, Homemade CAI w/sheild,
LS-7 Rockers, J.Formato Ported intake/Tuning, GMM Ripshifter(RACE),
TSW Thruxtons 18x8.5/245-40, 18X9.5 /275-35 Nitto 555s
384rwhp 382rwtq (conservative DYNO)
With just shorties/stock cats, CAI and a tune it had 367RWHP 366TQ,After pulley, catless mids,1.8s, and ported intake it went 384HP 382TQ on a different DYNO that usually reads about 10 or so lower than the first. I know its not a vette but the LS2 GTOs usually dyno's about the same as ZO6's with in 5-10hp.I'm going to put on a ported TB and re-dyno at the first place to see how much diff. there is but if it is 10hp and I get 5 or so from the TB then I'd say that 390-400RWHP/TQ from a bolt on LS2 thru shorties proves that they have to be making some difference,maybe not LT #s but better than most would seem to think.
JBA Headers/Catless bullet Mids, X-Pipe & Borla XR-1s, Powerbond U/D Pulley, Homemade CAI w/sheild,
LS-7 Rockers, J.Formato Ported intake/Tuning, GMM Ripshifter(RACE),
TSW Thruxtons 18x8.5/245-40, 18X9.5 /275-35 Nitto 555s
384rwhp 382rwtq (conservative DYNO)
With just shorties/stock cats, CAI and a tune it had 367RWHP 366TQ,After pulley, catless mids,1.8s, and ported intake it went 384HP 382TQ on a different DYNO that usually reads about 10 or so lower than the first. I know its not a vette but the LS2 GTOs usually dyno's about the same as ZO6's with in 5-10hp.I'm going to put on a ported TB and re-dyno at the first place to see how much diff. there is but if it is 10hp and I get 5 or so from the TB then I'd say that 390-400RWHP/TQ from a bolt on LS2 thru shorties proves that they have to be making some difference,maybe not LT #s but better than most would seem to think.
Last edited by hardcore4sure; May 26, 2007 at 11:07 PM.
