ZR-1 Net Registry Forums

ZR-1 Net Registry Forums (http://zr1.net/forum/index.php)
-   C4 ZR-1 General Postings (http://zr1.net/forum/forumdisplay.php?f=14)
-   -   Speeds at shift pointw (http://zr1.net/forum/showthread.php?t=19156)

efnfast 01-01-2013 12:16 PM

Re: Speeds at shift pointw
 
Alright, which gear gives you a higher top end, 4.10's or 3.45's? Realisticaly, not bench racing.

Mystic ZR-1 01-01-2013 12:20 PM

Re: Speeds at shift pointw
 
Steve
You can't pull 7500 in 6th gear? Bertha Must need a tune up...

XfireZ51 01-01-2013 12:24 PM

Re: Speeds at shift pointw
 
Quote:

Originally Posted by efnfast (Post 158498)
Alright, which gear gives you a higher top end, 4.10's or 3.45's? Realisticaly, not bench racing.

Steve,

Lgaff and myself raced side by side one day at Byron. He ran about .3 faster than I did but we had trap speeds within .01mph of each other. Just one data point. He has 4.10s on his 92, I had 3.45s and we had nearly identical mods done to our motors.

efnfast 01-01-2013 12:44 PM

Re: Speeds at shift pointw
 
Dom, I assume you trapped in 3rd, and Lee trapped in 4th? Still, which would have a faster top speed.

efnfast 01-01-2013 12:47 PM

Re: Speeds at shift pointw
 
Quote:

Originally Posted by Mystic ZR-1 (Post 158499)
Steve
You can't pull 7500 in 6th gear? Bertha Must need a tune up...

I know she needs a tune up Doug, but i think you're asking for a bit much. I wonder what kind of hp it would take to do that..I think somebody might have asked that question already.:-D

XfireZ51 01-01-2013 02:24 PM

Re: Speeds at shift pointw
 
Quote:

Originally Posted by efnfast (Post 158506)
Dom, I assume you trapped in 3rd, and Lee trapped in 4th? Still, which would have a faster top speed.

Steve, yes that's the way we came across. Lee's car was probably 2+mph faster than mine at the 1/8th. Something like 91 v 88. I thought you meant top end in the 1320.

ghlkal 01-01-2013 03:19 PM

Re: Speeds at shift pointw
 
Quote:

Originally Posted by Paul Workman (Post 158488)
I found this in my ZR-1 file. Marc Haibeck is apparently the author, and should shine some light on speed vs. rpm vs. differential gear - as it pertains to standard tire/wheel size of the ZR-1 (only).


Thanks, Paul, this is very useful information.

Pete 01-01-2013 03:40 PM

Re: Speeds at shift pointw
 
Quote:

Originally Posted by efnfast (Post 158498)
Alright, which gear gives you a higher top end, 4.10's or 3.45's? Realisticaly, not bench racing.

I would say 3.45

I don't think a stocker will pull in 6th with either 3.45 or 4.10 rear gears.

Pete

XfireZ51 01-01-2013 08:43 PM

Re: Speeds at shift pointw
 
Quote:

Originally Posted by Pete (Post 158530)
I would say 3.45

I don't think a stocker will pull in 6th with either 3.45 or 4.10 rear gears.

Pete

Pete,

If I recall even GM said the car would top out in 5th, not 6th.

LancePearson 01-01-2013 08:57 PM

Re: Speeds at shift pointw
 
March 2, 1990 fort stockton 24 hour record run...they said they ran in fifth gear on the 7.7 mile track at 190 mph on straights and corners sapped it down to 175 then back up again running at 5500 rpm stock rear end which would be 3.45 i belueve so the chart is off just a touch assuming same tire size.


All times are GMT -4. The time now is 01:39 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2025