Better than an X or H pipe?
Thread Starter
Joined: Nov 2001
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From: Victoria, TX
If you were to make your own box, it wouldn't necessarily have to be taller than 3.5" and then 9" wide and maybe 18" long. Think about how big a Flowmaster merge collector is an how well it fits under the car, even with a 4" pipe. This box could be no taller and only a couple of inches wider. It could fit.
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From: Austin, TX
Vizard built an exhaust system for a vette and the "box" was LONG and skinny. Probably 3+ inches thick, but only maybe 6-8 inches wide and probably 2 feet long. Maybe that would fit better running along side the TA and DS, rather than going under them.
Thread Starter
Joined: Nov 2001
Posts: 8,246
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From: Victoria, TX
Here is the No Loss Exhaust that Vizard built for a C4.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Originally Posted by Patrick G
If you were to make your own box, it wouldn't necessarily have to be taller than 3.5" and then 9" wide and maybe 18" long. Think about how big a Flowmaster merge collector is an how well it fits under the car, even with a 4" pipe. This box could be no taller and only a couple of inches wider. It could fit.
I know all about that one... I have one in my Y running above a spohn tq arm
and it is 4 inch on the exit... fits like **** LOL. Thread Starter
Joined: Nov 2001
Posts: 8,246
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From: Victoria, TX
According to Vizard, the box capacity needs to be a minimum of 8x the displacement of 1 cylinder per side. For my 347 for example, I would need 347ci x 2 or 694ci capacity of a resonator box with 2 pipes going in. That means an 8" wide x 3.5" tall box would need to be around 25" long to make the pipes think they've hit atmospheric. Basically, you would get a box that looks incredibly similar to Vizard's C4 box. That being the case, you would then have to take the dual exit pipes over the passenger side axle. It could work and it could fit. I'd probably need to have someone like Beck Mechanical make the resonator box out of sheet metal. Anyone else have any other sources to fab up this experimental box (at an affordable price)?
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From: Austin, TX
DO IT PATRICK. It would be a nice experiement to do a back to back with what you have and maybe an X system if you have access to one. Do you have merge collectors? What are you gonna do for mufflers after the chamber?
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Verdad Gallardo Thread Starter
Joined: Nov 2001
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From: Victoria, TX
Originally Posted by RyanJ
DO IT PATRICK. It would be a nice experiement to do a back to back with what you have and maybe an X system if you have access to one. Do you have merge collectors? What are you gonna do for mufflers after the chamber?
By the way, that's Paul from Thunder Racing on the left and Shane on the right.
OK Pat...Youve peaked my curiosity a little....LOL
I have to say this mod would be a NO BRAINER on a C5. The tunnel is about as ideal as it gets for this modification.
I'm half tempted to fabricate this myself....I would actually flange both ends so I could bolt in the box or bolt in the "X" pipe. Its a must that this gets tested the same day on the same dyno and that would facilitate that scenario quite nicely.
Im also curious as to its effects on part throttle and low/mid WOT torque....Im afraid it might hurt those area's but who knows.
I think some more research is in order.
Good stuff Pat....where do I sign?
Tony M.
I have to say this mod would be a NO BRAINER on a C5. The tunnel is about as ideal as it gets for this modification.
I'm half tempted to fabricate this myself....I would actually flange both ends so I could bolt in the box or bolt in the "X" pipe. Its a must that this gets tested the same day on the same dyno and that would facilitate that scenario quite nicely.
Im also curious as to its effects on part throttle and low/mid WOT torque....Im afraid it might hurt those area's but who knows.
I think some more research is in order.
Good stuff Pat....where do I sign?
Tony M.
Thread Starter
Joined: Nov 2001
Posts: 8,246
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From: Victoria, TX
Originally Posted by BrianC98Z28
Patrick what y pipe is that?
Any one know where the data/information is on the Mustang's that they dyno'ed this mod on. I would really like to see more information about this. I tried using google to look around but didn't seem to get very far. I'm considering deleting my CATS and fabricating a really long narrow box which I prefer from a flow perspective as well. It would certainly be a time consuming project to do it right and I would like to gather more intel before I seriously consider moving foward.
I need to do more rooting around on the NET, but if anyone knows where some addtional information could be accessed, that would be great.
Thanks,
Tony
I need to do more rooting around on the NET, but if anyone knows where some addtional information could be accessed, that would be great.
Thanks,
Tony
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From: Blairsville, GA
Okay, so 694ci inside the box... does it matter how you get that? Because I did the math, and you could make a box 3.5" X 6" X 33.5" to get said volume, and still be packaged nice and tightly under an F-body.
Quite interested myself(as I look at my stepped H-pipe and sigh)
Quite interested myself(as I look at my stepped H-pipe and sigh)
Thread Starter
Joined: Nov 2001
Posts: 8,246
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From: Victoria, TX
Originally Posted by Ric
Okay, so 694ci inside the box... does it matter how you get that? Because I did the math, and you could make a box 3.5" X 6" X 33.5" to get said volume, and still be packaged nice and tightly under an F-body.
Quite interested myself(as I look at my stepped H-pipe and sigh)
Quite interested myself(as I look at my stepped H-pipe and sigh)
TECH Enthusiast
Joined: May 2005
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From: Blairsville, GA
I haven't measured length, but it does seem like you have 33ish" of I-pipe before going over the axle. I've only measured width of the tunnel that it hangs in, so I may be wrong... probably am.
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From: Los Angeles
I have never been interested in true duals. However, this thread fascinates me. If Tony Mamo or some other sponsor manufactured this box for mass sales, it would be a major hit. Imagine, the hp advantage of true duals with the racket of true duals.