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#11 |
Join Date: Apr 2020
Location: Ridgecrest ca
Posts: 71
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My 90 with Corey porting on inj housings and plenum his chip headers and custom exhaust did 409.9 hp and 373.3 tq
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#12 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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I think with headers and exhaust I would see about 20 more HP. It is amazing how consistent these cars are regarding how much more power you get based on modification. Intake and IH porting with exhaust and chip will get the car to about 400 RWHP. From there it is diminishing return on money spent to gain more power. I have considered one of Mark H. performance package's but just worried how to resolve any issues after the fact. Its not like I can just drive the car to his shop.....
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1995 ZR1 #159 Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp 1992 ZR1 #280 Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp 1996 Collectors LT4 (Stock) 1972 Convertible 434 Small Block 572 rwhp |
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#13 |
![]() Join Date: Aug 2012
Location: Ellicott City, MD
Posts: 1,671
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Marc did my top end porting last year on my 92 with 97,000. It has Stainless Works headers and high flow cats with Corsa exhaust.
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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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#14 |
![]() Join Date: Jul 2012
Location: Allentown, PA
Posts: 309
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There is a lot to be gained just thru opening up the plenum and injector housings. My '93 made 411 SAE RWHP on Marc's Dyno with siamesed plenum and IH's, stock heads, stock exhaust manifolds, cat delete pipes, and B&B exhaust.
Sent from my SM-G975U1 using ZR-1 Net Registry mobile app
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'95 ZR-1, aqua/gray, #167 368 LPE/Haibeck, Web cams, Stainless Works headers, B&B Fusion exhaust, 18" Fikse wheels, Alcon brakes, lowered. 491 SAE RWHP. |
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#15 |
![]() Join Date: Aug 2004
Location: Spring Grove ,Pa.
Posts: 255
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Marc is the man. He did my car complete with losing the secondary system and Fidanza flywheel. Now I need to go with a bore increase for more cubes.
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91 Turquoise Metallic Haibeck 525 #0134 |
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#16 |
![]() Join Date: Jul 2012
Location: Allentown, PA
Posts: 309
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Addictive, isn't it?
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'95 ZR-1, aqua/gray, #167 368 LPE/Haibeck, Web cams, Stainless Works headers, B&B Fusion exhaust, 18" Fikse wheels, Alcon brakes, lowered. 491 SAE RWHP. |
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#17 |
![]() Join Date: Jun 2015
Location: Morris, IL
Posts: 176
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I had never witnessed a Dyno Run in person until Marc Haibeck did mine last year.
If you are planning on dyno'ing your car whatever you do, don't watch any Dyno Blow-Up or Mishap Videos on You Tube! Marc said at the time, "I have done hundreds of these, haven't blown one up yet." That statement eased my concern some, but I still stood by an open door ready to run. During the long (what seemed like an eternity) 3 runs, the car just stood and delivered, no smoke, no fuss, just screamed. After the dyno tune I have a lot more faith in my car, much more after watching it at the limit. By the way, the cooling fan is there mostly to cool the headers. Something I didn't know. Last edited by mcich7781; 05-19-2020 at 09:18 AM. |
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#18 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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My 95 has been ported (except for heads), has SS headers and Corsa exhaust, 4.10 rear gear and light weight flywheel and dual RAM clutch. Battery relocated to behind passenger seat, I Beam plates etc. It just runs so well I am afraid of doing any more power upgrades.
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1995 ZR1 #159 Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp 1992 ZR1 #280 Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp 1996 Collectors LT4 (Stock) 1972 Convertible 434 Small Block 572 rwhp |
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#19 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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What upgrade package did you get? Great numbers!
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1995 ZR1 #159 Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp 1992 ZR1 #280 Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp 1996 Collectors LT4 (Stock) 1972 Convertible 434 Small Block 572 rwhp |
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#20 | |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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1995 ZR1 #159 Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp 1992 ZR1 #280 Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp 1996 Collectors LT4 (Stock) 1972 Convertible 434 Small Block 572 rwhp |
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