gears!!!
Jan 14, 2008 | 02:19 AM
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 1,178
Likes: 15
From: Montreal Quebec
gears!!!
i did have an 87 with 3.07 and auto i want to change gears but i im now at +/-2100 rpm at 75 mph so what will be the difference in performance and rpm at high speed with 3.73 or 4.10
will 4.10be too much or ok with overdrive
Jan 14, 2008 | 02:21 AM
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 1,178
Likes: 15
From: Montreal Quebec
i im also running 275/40/18's in the back and will be on 295/35/18's very soon!!!
Jan 14, 2008 | 02:31 AM
Safety Car
Joined: May 2005
Posts: 3,682
Likes: 1
From: Scappoose Oregon
St. Jude Donor '11,'14
From what I have read the 3.07 is best overall for stock L98. I don't have any experience but I have read a few posts.
Jan 14, 2008 | 06:16 AM
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Quote:
Originally Posted by
fast red 87 vette
i did have an 87 with 3.07 and auto i want to change gears but i im now at +/-2100 rpm at 75 mph so what will be the difference in performance and rpm at high speed with 3.73 or 4.10
will 4.10be too much or ok with overdrive
If you still plan on running the stock intake. DO NOT change the gears.
Jan 14, 2008 | 10:33 AM
Melting Slicks
Joined: Jul 2006
Posts: 2,151
Likes: 0
From: Strongsville Ohio
I have 4.11's for 100 bucks brand new with master kit for sale if you go that route
Jan 14, 2008 | 12:42 PM
Instructor
Joined: Nov 2006
Posts: 103
Likes: 0
From: Ft Liquordale Florida
Quote:
Originally Posted by
88BlackZ-51
If you still plan on running the stock intake. DO NOT change the gears.
One of my buddies told me the same thing, why???
Jan 14, 2008 | 02:48 PM
Drifting
Joined: Jun 2004
Posts: 1,477
Likes: 87
Quote:
Originally Posted by
alecracing
One of my buddies told me the same thing, why???
I think it's because L98's make most of their power down low, and your going to take your self out of that rpm range where your making the most pretty quickly with those gears (my .02 anyways)
Jan 14, 2008 | 04:40 PM
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Quote:
Originally Posted by
alecracing
One of my buddies told me the same thing, why???
because of the torque band of the L98.
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Jan 14, 2008 | 06:04 PM
Team Owner
Joined: Sep 2001
Posts: 62,141
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Do NOT change to such a low gearset if you plan to keep it with a TPI intake.
Jan 14, 2008 | 06:36 PM
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
You will probably lower your 1/4 time.
Jan 14, 2008 | 08:31 PM
Drifting
Joined: Aug 2001
Posts: 1,407
Likes: 0
From: Houston TX
I have a 93 so not sure it applies but 373 gears at 2500RPM = 65 MPH
Jan 14, 2008 | 08:49 PM
Melting Slicks
Joined: Jul 2006
Posts: 2,151
Likes: 0
From: Strongsville Ohio
do u have an auto? I have 4.11's and im at 1900 at 65. u must be in 5th gear
Jan 14, 2008 | 09:09 PM
Team Owner
Joined: Sep 2001
Posts: 62,141
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Quote:
Originally Posted by
BADDUCK
You will probably lower your 1/4 time.
No, it'll probably raise his 1/4mi time.
Jan 14, 2008 | 11:00 PM
Melting Slicks
Joined: Apr 2007
Posts: 2,616
Likes: 111
3.07 is the gear ratio for the TPI intake. It runs out of breath at 4500 (at best) so you want to keep the revs down where it makes most of its power.
gears!!!
will 4.10be too much or ok with overdrive 
