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correct gear for speedometer

Started by almerkel, June 05, 2006, 09:55:20 PM

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almerkel

June 05, 2006, 09:55:20 PM
Ok you knowlwdgeable people.  What speedometer cable gear do I use for my charger.   ??? I have a 354 Dana and am putting 275 60 15s on the back.   Thanks in advance for the help.   ::)

Big Lebowski

#1
June 05, 2006, 11:41:39 PM
  The book says a 3.54 car uses a red 36 tooth gear with 235/60 R-15 tires. A 4.10 car uses a white 42 tooth gear with 235/ 60 R-15's. But with your 275's it might feel, and be more like a 3.23 car which uses a 32 tooth gear. :icon_smile_big:
"Let me explain something to you, um i am not Mr. Lebowski, you're Mr. Lebowski. I'm the dude, so that's what you call me. That or his dudeness, or duder, or you know, el duderino if you're not into the whole brevity thing."

Nacho-RT74

#2
June 06, 2006, 10:00:11 AM
I think Year One has a guide... at least on catalog, not sure about on line guide
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

MOPARHOUND!

#3
June 06, 2006, 04:01:00 PM
Here you go, chart with gear ratio and tire diameter, part #'s, etc.:

http://www.moparts.com/Tech/Archive/auto/12.html
1971 Charger R/T, 440 H.P., Auto, A/C Daily Driven (till gas went nuts).  NOW IN CARS FOR SALE SECTION: http://www.dodgecharger.com/forum/index.php/topic,48709.0.html
1969 Charger 318/Auto (latest addtion): http://www.dodgecharger.com/forum/index.php/topic,31948.0.html
*Speed costs money son, how fast do you want to go, and for how long?"
*"Build the biggest engine you can afford the first time."
*"We normally wouldn't use a 383 for this build, parts and labor for a 440 cost the same."

John_Kunkel

#4
June 06, 2006, 05:59:49 PM
A 3.54 gear with a 28" tire calls for a 33 tooth pinion.

The color is yellow and the current P/N is 52068155.
Pardon me but my karma just ran over your dogma.

almerkel

#5
June 07, 2006, 05:33:14 PM
33 TOOTH IS THE CORRECT ONE.  THANKS FOR YOUR HELP.
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