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#1 |
![]() Join Date: Jul 2012
Location: Allentown, PA
Posts: 309
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Time for another good dyno report... Marc just finished a round of upgrades on my new-to-me '95 (replaced my wrecked '93 last year). The car was originally modified to a 368 by Lingenfelter, then breathed on by DRM but never reached its potential. Everything was pretty much sub-optimal. Last recorded dyno before sending the car off to Marc was around 420 RWHP. Pretty mediocre for a 368. Pulled 486 SAE RWHP/405 ft. lbs. torque on the dyno yesterday. That equates to 572 crank HP. Not bad for a 30+ year old design. Kudos to Marc for another outstanding piece of work!
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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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#2 |
![]() Join Date: Jun 2005
Location: CenCoast California
Posts: 899
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486 SAE at the tire?
Wow. Impressive. Can beat Haibeck's stuff, that's for sure. At what RPM were peak power and torque?
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Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878 |
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#3 |
![]() Join Date: Jul 2012
Location: Allentown, PA
Posts: 309
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Peak torque around 5200 RPM and power basically flat from 6500 to 7100 RPM.
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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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#4 |
![]() Join Date: Sep 2016
Location: Ocala, FL
Posts: 889
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Wow that is something. Did Mark just computer tune it only? Did he re time the cams?
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Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much. |
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#5 | |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,648
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Just a guess, but I'll bet you'll be replacing the rear tires fairly often....... Enjoy the madness!!! 'Crabs
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TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B] |
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#6 |
![]() Join Date: Jul 2012
Location: Allentown, PA
Posts: 309
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Pure stock, just a tune... kidding, of course. Top end porting (including siamesed plenum and injector housings), medium weight (20 lb.) flywheel, cams, headers and 3" exhaust. Well, at least the air filter is stock.😏
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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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#7 |
![]() Join Date: Jun 2005
Location: CenCoast California
Posts: 899
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When you say "cams"...do you mean stock cams which have had their timing changed or do you mean cams with more aggressive profiles.
If the latter tell us about the cam profiles.
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Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878 |
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#8 |
![]() Join Date: May 2010
Location: Japan
Posts: 3,572
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Wow Dennis! That?s awesome. Enjoy the new power in your new toy!! [emoji1303]🤙🏼
Sent from my iPhone using ZR-1 Net Registry
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Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048 ![]() |
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#9 | |
![]() Join Date: Jul 2012
Location: Allentown, PA
Posts: 309
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Exhaust 222 deg. duration, 0.442" lift
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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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#10 |
Join Date: May 2013
Location: Chicago
Posts: 978
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Are you using the stock clutch with the 20lb flywheel?
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1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black *Sold* 1985 L98 Blue On Blue *Sold* |
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