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#21 |
![]() Join Date: Nov 2016
Location: Southlake, TX
Posts: 586
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So, (insert strong opinions here) for a header back exhaust what is everyone's experiences? I read, read with more reading with the conclusion being that Corsa is the one to have coupled with either Henderson headers or SW.
I Like a bit of rumble and burble on deceleration but drone is a super no-no. Plus, I want the idle to sound "Corvette" and not 69 Hemi Super Bee. I listen on you tube and Borla sounds more what I like(ish) but the drone has me I kind of like cars that are a "sleeper" in presentation.
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Bill Schroeder Texas Proud! 1991 Corvette ZR1 #1388 2015 Challenger Scat Pack Shaker ![]() |
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#22 |
![]() ![]() Join Date: Jun 2005
Location: pittsburgh
Posts: 4,633
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corsas are they way to go if you like the sound. It's grown on me
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It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B" |
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#23 |
![]() Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,359
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You really have to come to Bowling Green and listen to some cars to decide.
I have ceramic coated OBX headers and OBX exhaust. Very happy with it. |
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#24 | |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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#25 | |
![]() Join Date: Aug 2012
Location: Ellicott City, MD
Posts: 1,666
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Charlie __________ Dredgeguy WAZOO Member 1992 Bright Red/Black ZR1 #246 Dana 4:10 gears Polished LT5 by Haibeck Polished Fikse FM5's with Michelin Pilot Sport 2 Stainless Works headers and cats with Corsa |
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#26 | |
![]() Join Date: Mar 2006
Location: Olive Branch,MS
Posts: 291
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#27 | |
![]() Join Date: May 2005
Location: Georgia Mountains
Posts: 926
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4:10, porting, headers, and late C4 stock exhaust with electric cutouts. Try to locate a 95 stock ZR-1 exhaust or a 96 LT4 exhaust. Install a pair of QTP electric cutouts just ahead of the muffler inlet. The cutouts are controlled by a switch located to your convenience. Totally open it's very close to running open headers - totally closed it's almost stock sounding (headers add a nice touch) - partially opened to taste, you can pick the sound that you like. Drone is only present when you open more than half-way. I've had the stock system on my 90, 2.5" Borlas, 2.75 Borla Challengers, Corsas, stock 95 exhaust, and finally the stock 96 LT4 w/cut outs, SW headers, and porting by Marc. Highly recommended: listen to & ride or drive as many Z's with different setups before you start modding your exhaust ... it will save time & money in the long run. |
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#28 |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Here's mine idling, fully ported w/ stock cams...
https://www.youtube.com/watch?v=y1YFa8ruh8A Below is my stock 90 ZR-1 (RED) and the fully ported version (BLUE)- as you see it in the video (above). .
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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#29 |
![]() Join Date: Jun 2015
Location: Texas
Posts: 530
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Bill, I am running Bolas, Henderson headers, no cats, and an X pipe in place of resonator. It is loud and has that BRAAAAP on acceleration, but it does drone in 6th at legal speeds. I do not know if mine is ported, I doubt it, but after Corey did the headers she dynoed at 383 WHP. Drop me a line if you are close by Houston and swing by and you can hear it in person. I personally do not get the full experience from youtube, To me it's kinda like trying running a brothel with pictures!
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#30 |
![]() Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Bill,
You rode in my '91 in Buffalo, Tx at our last gathering. 100% Stainless Works headers to exhaust tips. I do have drone at 1800 RPM, gone by 1900 RPM. Exhaust note is great. I'm about to port a plenum and injector housings, then port match the heads and retune (my tune). Currently #473 is putting down 359, 350 at the wheels with only headers and tune.. will let you know what I find with the top end porting on my '91. Sent from my QTAIR7 using ZR-1 Net Registry mobile app |
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