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


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 11-15-2013, 02:59 PM   #1
Longhorn 70
Registered User
 
Longhorn 70's Avatar
 
Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
I thought it was 4.11 but may be 4.56???

I have always been told and always thought that I had a 4.11 under the truck. I am not so sure now. I have been trying to calibrate the speedo with little luck.

I DLd an app for my phone that is a GPS speedo. I am indicating about 10% HIGH off with a 700R4. I have a GRAY drive gear and GRAY driven gear for the speedo drive with 30" tall tires. All of the speedo calculators I see say I should be dead on or SLOW.

Insights??

Thank you in advance
__________________
1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11.
1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar

And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9
Longhorn 70 is offline   Reply With Quote
 

Bookmarks

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 -4. The time now is 09:01 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com