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#1 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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Ran it with the valet key on and off to checkout the secondary operation. The only non-stock part is the flow master cat-back exhaust system.
![]() Here is the run for my 95. More mods including headers, exhaust, porting and Haibeck chip. ![]()
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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 Last edited by KJL; 05-08-2015 at 02:59 PM. |
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#2 |
![]() Join Date: Jan 2015
Location: Marietta, GA USA
Posts: 1,160
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Aw, you should've let me know! I would have gone to watch. :-)
Looks healthy. I've been looking for an opportunity to take mine to Arthur's dyno, too. Maybe I'll go later this month.
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Russ McBride, [COLOR="Red"]Car Sold 8/2020[/COLOR] #1635, Marietta, GA USA, 1991 ZR-1, #766 (bought 1/1/2015) MS3-Pro, OBX, SW X-Pipe, Borla, Hurst, SLP, Goodyear F1 GS-D3, Kenwood. HOTB 2016Q3 [IMG]http://zr1.net/forum/picture.php?albumid=316&pictureid=2873[/IMG] [IMG]http://zr1.net/forum/picture.php?albumid=336&pictureid=2985[/IMG] |
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#3 |
![]() Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,170
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Nice #'s... My 91 did 335RWHP, with just flows & stock chip also. (324 bone stock 11k miles on it)
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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#4 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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Let me know. I like to go by there on Thursday nights to see what is going on.
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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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#5 |
![]() Join Date: Sep 2006
Location: diamond lake /washington
Posts: 223
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if that dyno sheet reads 400 plus there must be other stuff besides exhaust in there
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#6 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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Yes, that sheet is for the 1995. Lots more....
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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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#7 |
![]() ![]() 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 numbers! Did you do the porting or did you send oit out?
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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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#8 |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Mike Ebert did it I believe...
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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#9 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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Yes Mike Ebert did the work. Very nice job. All I did was port match the heads to the injector housings and clean up some gasket issues. Didn't pick up much HP, maybe a few. What I did was not worth the effort. When I get around to replacing gaskets, servicing injectors and Fuel line o-rings, I will see if I can track down Mike to do the same thing to the 92 intake and housings.
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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 Last edited by KJL; 05-10-2015 at 12:53 PM. |
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#10 |
![]() Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
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Update: Flash forward 5 years..... I can not believe it has been 5 years already. The attached photo is of a dyno run I did in 2018 after porting the intake, injector housings and port matching and blending the head ports myself. It took the better part of a year to do this. Along with the porting I also locked the secondaries and had Mark H. adjust the fuel curve on the chip. Pretty good increase in power and torque for just letting her breathe better. My guess is a set of headers with no cats would put me close the 95's performance of 400 RWHP. I chronicled the whole porting job complete with flow data on the corvette forum ZR1 tech section. I wish there were a way of transferring to this forum.
Tested at 371 rwhp & 362 rwtq
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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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