The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-25-2011, 02:22 PM   #1
gman72
Registered User
 
Join Date: Mar 2011
Location: Burlington, IA
Posts: 5
Speedometer Correction 205

Hey, I have a NP 205 transfer case and I am about to go up in tire size to a 33 inch. I was just wondering what would be the easiest way to correct my speedometer. Post a link or leave a response, Thanks
gman72 is offline   Reply With Quote
Old 03-25-2011, 03:40 PM   #2
jasons
not enough hours in the day
 
jasons's Avatar
 
Join Date: Jan 2009
Location: Axtell, NE
Posts: 550
Re: Speedometer Correction 205

I don't think you can change the speedometer gears in the transfer case like you can in a transmission. I've used ratio adapters like these.http://www.transmissioncenter.net/sp...atio%20adapter
__________________
65 K-10 Short Step
68 C-50
70 K-5
85 K-10
& piles of spare parts
jasons is offline   Reply With Quote
Old 03-25-2011, 03:58 PM   #3
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,213
Re: Speedometer Correction 205

x2 on the adapter.

Just figure out your actual speed (using a GPS or one of those radar signs) and compare it to your indicated speed.

Buy an adapter of the appropriate ratio, plug it in and you're good to go.

K
__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/
Keith Seymore is offline   Reply With Quote
Reply

Bookmarks

Tags
correction, speedometer


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 -4. The time now is 02:32 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com