Go Back   The Supercar Registry > General Discussion > Technical & Restoration


Reply
 
Thread Tools Display Modes
  #1  
Old 10-18-2019, 12:56 AM
cdn454LS6 cdn454LS6 is offline
Yenko Contributing Member
 
Join Date: Apr 2005
Location: Canada
Posts: 761
Thanks: 2
Thanked 34 Times in 28 Posts
Default Speedo reducer what's it for

Anybody know what this reducer is for ?
666F V8
.9444W

Thanks for your help
Ken
Attached Images
  
Reply With Quote
Attachments - The Supercar Registry IMG_1955.jpg IMG_1954.jpg IMG_0989-1.JPG IMG_0987-1.JPG
O Garage vBulletin Plugins by Drive Thru Online, Inc.
Click here to view all the pictures posted in this thread...
  #2  
Old 10-18-2019, 01:29 AM
McCune McCune is online now
Yenko Contributing Member
 
Join Date: Apr 2017
Location: St.George,Utah
Posts: 475
Thanks: 421
Thanked 271 Times in 111 Posts
Default

Low Rear Gear cars.
Reply With Quote
  #3  
Old 10-18-2019, 01:31 AM
XXXGoldL34M20's Avatar
XXXGoldL34M20 XXXGoldL34M20 is online now
Yenko Contributing Member
 
Join Date: Dec 2009
Location: Great White North
Posts: 4,028
Thanks: 125
Thanked 254 Times in 169 Posts
Default

My Guess later model Truck after 1970 with 4.10 gear ratio.
Checked eBay completed items and one sold for $64 but had no info at all for what it was for.
__________________
"NOSTALGIA It takes us to a place were we ache to go again"
Reply With Quote
  #4  
Old 10-18-2019, 01:34 AM
BCreekDave BCreekDave is online now
Senior Member
 
Join Date: Sep 2016
Location: Dayton Ohio
Posts: 863
Thanks: 294
Thanked 410 Times in 227 Posts
Default

There are charts from GM that show when a particular combination of trans and wheel-tire size got a particular part number reducer. The part number is not one of the numbers you listed. you have to do a bit of google searching to cross reference the GM part number to the reduction number, in your case the .9444.

Here's an example for a 1970 Camaro,Chevelle, Nova 4 speed cars:

http://www.gmpartswiki.com/getpage?pageid=12662

If you plan on actually using it, you would be advised to open it up and clean out and re-pack the grease. It dries out over time.
__________________
70Z28 04B Norwood Forest Green-white Stripes Black DeLuxe Interior
Owned since 1978 - First Car

Last edited by BCreekDave; 10-18-2019 at 01:37 AM.
Reply With Quote
The Following 3 Users Say Thank You to BCreekDave For This Useful Post:
Niblet (10-21-2019), PeteLeathersac (10-18-2019), ZLP955 (10-19-2019)
  #5  
Old 10-18-2019, 03:18 AM
cdn454LS6 cdn454LS6 is offline
Yenko Contributing Member
 
Join Date: Apr 2005
Location: Canada
Posts: 761
Thanks: 2
Thanked 34 Times in 28 Posts
Default

I found one guy selling a reducer
and claiming it's for LS6 410 rear
666F V8
.8241C
maybe mine is for 456 rear ?
Reply With Quote
  #6  
Old 10-18-2019, 02:32 PM
NorCam's Avatar
NorCam NorCam is offline
Senior Member
 
Join Date: Feb 2015
Location: Alberta, Canada
Posts: 4,190
Thanks: 2,583
Thanked 3,399 Times in 1,242 Posts
Default

A friend here in Calgary gave me one that I used in the green 4:10 gear car I recently finished. They work well if you know what gear conversion they were intended for.
__________________
I like solid lifter cars, big cams and cars w/ 3 pedals in them.
Reply With Quote
  #7  
Old 10-18-2019, 08:12 PM
L78steve L78steve is offline
Senior Member
 
Join Date: May 2006
Location: Hendersonville NC
Posts: 944
Thanks: 7
Thanked 33 Times in 30 Posts
Default

If you repack it with grease use a light grease. Otherwise the load can snap the tab on the drive gear clip inside the tail housing.
__________________
"Knowledge is good" Emil Fabor
67 L/78 Camaro SS/RS H-H,1W,2LGSR,3SL,4K,5BY. (Sold)
70 L/78 Nova M-21,Black Cherry,Sandalwood Int.
09 Pontiac G8 GT Premium,Sport,Roof. Liquid Red.
Reply With Quote
The Following User Says Thank You to L78steve For This Useful Post:
PeteLeathersac (10-18-2019)
  #8  
Old 10-19-2019, 02:39 AM
hiperf406 hiperf406 is offline
Member
 
Join Date: Mar 2010
Location: Alta. Canada
Posts: 96
Thanks: 3
Thanked 48 Times in 13 Posts
Default

Are these also used on the automatic cars, mine came with 4:10 gears but someone put in 3:73 gears. If I return to the factory gears I will have to get a reducer.Thanks
__________________
63 Vette Rdstr (sold )
68 Z28 (May /68 build)
70 LS6 Hdtp.M40.4.10/Dec/69 build

When the flag drops the bullsh1t stops.
Reply With Quote
  #9  
Old 10-19-2019, 10:21 AM
Igosplut's Avatar
Igosplut Igosplut is offline
Yenko Contributing Member
 
Join Date: Dec 2006
Location: N/A
Posts: 484
Thanks: 55
Thanked 130 Times in 76 Posts
Default

I have a box full of those, there was two different kinds. Mostly for trucks.
__________________
WOT
Reply With Quote
  #10  
Old 10-19-2019, 11:33 AM
WILMASBOYL78's Avatar
WILMASBOYL78 WILMASBOYL78 is offline
Yenko Contributing Member
 
Join Date: Jul 2003
Location: new york
Posts: 8,170
Thanks: 1
Thanked 1,596 Times in 490 Posts
Post Speedo Reducer...

Quote:
Originally Posted by hiperf406 View Post
Are these also used on the automatic cars, mine came with 4:10 gears but someone put in 3:73 gears. If I return to the factory gears I will have to get a reducer.Thanks
Yes auto cars got these as well.
__________________
02 Berger 380hp #95
Lots of L78 Novas
Join National Nostalgic Nova!
70 Orange Cooler
69 Camaro
Reply With Quote
The Following User Says Thank You to WILMASBOYL78 For This Useful Post:
HuggerSS (11-20-2019)
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 01:38 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.