speedo gear colors vs rear end gears - Team Camaro Tech
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post #1 of 6 (permalink) Old Oct 8th, 01, 05:01 PM Thread Starter
 
Join Date: Oct 2001
Location: s boston, ma, usa
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Angry

I got an 82 Z-28, i put an 88 350ci 5 speed trani in it, and i have 4.11 gear in the rear end. Does anyone know where i can find out what color speedometer gears go with what rear end gear ratio?

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post #2 of 6 (permalink) Old Oct 9th, 01, 12:06 PM
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Go out to your Chevy dealer's parts dept. They have a book stating correct speedo gears for tranny/rear-end ratio/tire size combinations. It just takes a little bit of time to look through the book to find your combination. That's what I did to find the correct gears for my 67. My 67 has a non-original TH-350 tranny (which wasn't even available in the Camaro in 67), 15 inch wheels (which also weren't available), and the stock 6-cylinder 2.73 rear end. It's a hodgepodge of parts that made finding the correct gear difficult. I think the gear set that ended up being correct was from something like a mid-70s Camaro Type-LT with optional wheels or something. The Chevy dealer can then order you the gears.

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Justin Traunero
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post #3 of 6 (permalink) Old Oct 9th, 01, 01:42 PM Thread Starter
 
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alright thanx, i'm goign to have to go in and see what they say. i just didn't think i could do that cause i work for a shop and i called the dealer before and all they said was "oh i can't look thta up i need to knwo the color" but i'll try a different place.. thank
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post #4 of 6 (permalink) Old Oct 9th, 01, 05:45 PM
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when you go into a dealer to ask about speedo gears, seek out the oldest looking guy behind the counter. younger guys tend to get lost when it isn't on the computer...the old timers tend to know all about speedo gears and the like.altho, there are some younger kids that know about it- they are the gearheads who like to dream as they flip thru the performance parts catalog and punch up prices for all the cool crate motors and what not.they are usefull for solving other high performance problems you might have.

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post #5 of 6 (permalink) Old Oct 9th, 01, 08:36 PM
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David Pozzi
 
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Look here: http://www.chevelles.com/shop/speedo.html
Don't know if this info would apply to the later transmissions.
Pay attention to what side the gear comes out of the trans, there are two types of driven gears.
AFIK all spedos require the same number of revolutions per mile.
David

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post #6 of 6 (permalink) Old Oct 10th, 01, 05:24 AM
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Be aware that the drive gears came in two different diameters. Something like 1-3/4 and 1-7/8". I swapped from a T350 to a M20 and they took a different diameter driven gear.
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