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06-19-2016
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#1 |
 Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Is there a difference in performance from the 90 to the 91 model?
I know there are slight differences in the front fascia but how about performance?
Some people say that some of the 90s cam timing out of the factory were a little more aggressive than the other years.....I know the car got a little heavier as the years went on.... When they tested the 91 in the 1/4 mile it ran a disappointing 13.8 I believe...They attributed this to hot engine temps and maybe a slipping clutch.. Top end speed I believe was still high... Just curious.... |
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06-19-2016
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#2 |
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Join Date: Jun 2015
Location: Texas
Posts: 530
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Re: Is there a difference in performance from the 90 to the 91 model?
Stock for Stock I doubt there is any noticeable difference in handling or speed.
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06-19-2016
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#3 |
 
Join Date: Feb 2012
Location: Ledyard,CT
Posts: 8,203
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Re: Is there a difference in performance from the 90 to the 91 model?
Yep!
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06-19-2016
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#4 | |
 
Join Date: Jan 2010
Location: Mystic CT
Posts: 2,629
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Re: Is there a difference in performance from the 90 to the 91 model?
Quote:
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06-19-2016
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#5 |
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Join Date: Jun 2015
Location: Texas
Posts: 530
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Re: Is there a difference in performance from the 90 to the 91 model?
Reds ha!!!It's commonly know that black paint shaves off 5 tenths,
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06-19-2016
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#6 |
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Join Date: Jan 2010
Location: Mystic CT
Posts: 2,629
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Re: Is there a difference in performance from the 90 to the 91 model?
Reds ha??????
You're confused, bless your poor little heart... Everyone knows that in the quarter reds are good for about a second and 5 mph better than any other color! Don't believe me? Start a poll... 
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06-19-2016
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#7 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,652
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Re: Is there a difference in performance from the 90 to the 91 model?
Everyone knows that the red 90's are faster.
<shrugs shoulders> Just the way it is. Red. Yup. Red. '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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06-20-2016
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#8 |
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Join Date: Feb 2012
Location: Ledyard,CT
Posts: 8,203
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Re: Is there a difference in performance from the 90 to the 91 model?
No No No Pete's car is the fastest one ever!!!
It's been over 400 mph! |
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06-20-2016
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#9 |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Is there a difference in performance from the 90 to the 91 model?
Because the primary injector is sealed at the top instead of at the the bottom (tip) of the injector, when porting the IH the boss for the injector tip can be cut completely away on the 90 IH. removing that boss, some say, improves the air flow.
All things being equal, perhaps so. But, there's so much involved in the porting process besides that primary boss that whether there is one or not gets lost in the noise!  That said and done, all else (porting/cams, etc) being equal, AND the car is RED...well it's no contest: RED WINS! (Take a poll!  )
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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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06-20-2016
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#10 | |
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Join Date: Feb 2016
Location: Carterville Illinois
Posts: 849
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Re: Is there a difference in performance from the 90 to the 91 model?
Quote:
Man, didn't anyone tell you guys?? Dave Mclellan told me the Polo greens are the fastest Z's made......The Green adds an extra 15HP to the rear wheels 
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