3.54 gears
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
275 40 17
3.45 is already done
2.56 speedometer setup is broken,
3.45 speedometer setup is incomplete only have gray and vss
i ask about the green gear because its availble oposed as purple ( available to me for about 30 days)
tire is 25.50
i supose i will bought this green gear until i found a purple one
3.45 is already done
2.56 speedometer setup is broken,
3.45 speedometer setup is incomplete only have gray and vss
i ask about the green gear because its availble oposed as purple ( available to me for about 30 days)
tire is 25.50
i supose i will bought this green gear until i found a purple one
I have a NOS 42T GREEN "in my hand". I hadn't considered selling it but I might. I do calibrations from time to time and to finish a job that needs it makes it quite valuable.
You can make the NEEDLE MOVE with any tooth count 40 to 43. Put it together with anything that you can find to drive it and when you find a correct one the driven is very easy to replace.
Last edited by WVZR-1; Jan 28, 2017 at 09:55 PM.
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
You need to install it and drive with a GPS for comparison. Check it at various speeds to determine the % of error but I'd think you'll be quite happy. The error is going to be a % and not a fixed value. The speedometer would be "fast" if not correct. I doubt you'll be looking for another.
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Thread Starter
Pro
Joined: Apr 2000
Posts: 589
Likes: 3
From: Acapulco Guerrero
I forgot to ask if the gear that i received from summit https://www.summitracing.com/int/par...019a/overview/
Is the same or equivalent as chevrolet 12507670 ?
Is the same or equivalent as chevrolet 12507670 ?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
I forgot to ask if the gear that i received from summit https://www.summitracing.com/int/par...019a/overview/
Is the same or equivalent as chevrolet 12507670 ?
Is the same or equivalent as chevrolet 12507670 ?
What you need/should receive is an equivalent to GM# 8642620 and would be correct. Did you buy a new retainer for it's use or just plan on using your old? Now there's a reference to the 880019A in the summit reference SO if that's what you actually bought it will be incorrect. It would be for a larger TH400 etc with 32 spline output. Maybe a bad Summit reference or you maybe just picked a bad link this AM.
These links would be for a correct 4L60/700R4
http://www.tciauto.com/tc/gm-speedom...ooth-grayhtml/
https://www.summitracing.com/parts/tci-880018
Measure the ID of the gear that you received. If the ID is other than 1.19 then it's incorrect. The Summit gear in the 'correct' gear link mentions the 'wrong color' but the image appears to be correct.
Last edited by WVZR-1; Feb 1, 2017 at 07:54 AM.
Thread Starter
Pro
Joined: Apr 2000
Posts: 589
Likes: 3
From: Acapulco Guerrero
thanks
I already ask to Summit the correct part
I have a new retainer
with your knowledge please corect the gears chart , this is useful for all the fórum
http://garage.grumpysperformance.com...-adapter.1237/
or add a column for auto and manual trans
I already ask to Summit the correct part
I have a new retainer
with your knowledge please corect the gears chart , this is useful for all the fórum
http://garage.grumpysperformance.com...-adapter.1237/
or add a column for auto and manual trans
Instructor
Joined: Feb 2015
Posts: 234
Likes: 20
From: Stuart Florida
I recently installed 3.54 richmond gear in my dana 36
I bought to summit
1.- 3,54 gears
2.- speed sensor 10456089
3. speedometer drive gear 15t
4.- speedometer driven gear 43t
but 43t gear came incorrect
where can i buy this part ? 25513050 - Driven gear, 43-tooth (purple)
I bought to summit
1.- 3,54 gears
2.- speed sensor 10456089
3. speedometer drive gear 15t
4.- speedometer driven gear 43t
but 43t gear came incorrect
where can i buy this part ? 25513050 - Driven gear, 43-tooth (purple)
I'm lookinh to put a set of 3.73 in my 1994. I currently have 3.07 Dana 36. I've read that if you have a 3.07 instead of the standard 2.56 differential, then a "thick" replacement ring gear is needed. Did you run into this? Also, are you doing this yourself or taking it to a shop? Gary
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
I'm lookinh to put a set of 3.73 in my 1994. I currently have 3.07 Dana 36. I've read that if you have a 3.07 instead of the standard 2.56 differential, then a "thick" replacement ring gear is needed. Did you run into this? Also, are you doing this yourself or taking it to a shop? Gary
IF it were me - I'd keep the OE/GM 3.07 "as is" untouched and put it on the shelf. I'd get me a D36 of a lesser desired ratio and build it. WHY? i'd think there's every reason to believe that you'll be less than thrilled after the 3.73 build (unless there's a particular need), that makes the 3.07 readily available to go back.
If you're interested in a D36 empty housing I have a couple that for maybe a few $$ + the ship I'd part with. Then you buy a D36 carrier, bearings, pinion flange and a gear kit so that you've got a "new" or as close to new as possible for your 3.73 build.
If you're happy with the 3.73 build the 3.07 built is somewhat valuable and will resell easily! A used 3.07 gear kit will bring very little unless you find a "fool".
Last edited by WVZR-1; Feb 1, 2017 at 09:16 PM.
