BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
 
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 where to find the correct 3:73 gears

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cloud 9

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Posts : 563
Join date : 2009-10-03
Age : 49
Location : Dover, NH

PostSubject: where to find the correct 3:73 gears   Sun Feb 07, 2010 8:59 pm

OK, i've looked all over for 3:73 gears for the cappy. Can anyone give me the links to exactly what set fits my car and the right speedo gear that goes with it so its correct. I don't want one of the posi units, just a straight up gear set. Thanks Guys Very Happy
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mean ss

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Location : Nashua NH.

PostSubject: Re: where to find the correct 3:73 gears   Sun Feb 07, 2010 10:17 pm

do you have the 8.5 rear?
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PostSubject: Re: where to find the correct 3:73 gears   Mon Feb 08, 2010 6:34 am

mean ss wrote:
do you have the 8.5 rear?
I was going to ask the same question. If you have the 7.5 rear, you cannot install anything bigger than 2.93 in a 7.5 housing. I think.
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cloud 9

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PostSubject: Re: where to find the correct 3:73 gears   Mon Feb 08, 2010 4:05 pm

How can I tell. Is there an RPO code for it Question
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mean ss

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PostSubject: Re: where to find the correct 3:73 gears   Mon Feb 08, 2010 4:28 pm

the rear end cover is how you tell, I cant find the better link I had

http://www.carcraft.com/techarticles/ccrp_0603_budget_10_bolt/id.html
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mean ss

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PostSubject: Re: where to find the correct 3:73 gears   Mon Feb 08, 2010 5:42 pm

try this one

http://www.roadkillcustoms.com/hot-rods-rat-rods/garage-shop-reference-Differential-Identification.asp
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PostSubject: Re: where to find the correct 3:73 gears   Tue Feb 09, 2010 9:00 pm

I believe this is the one that I have.
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mean ss

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PostSubject: Re: where to find the correct 3:73 gears   Tue Feb 09, 2010 9:16 pm

call Dan tell him what you have get the gears bearings and ABS Reluctor you should get the posi too because the stock one is a POS and you will be doing it again

http://www.impalassforum.com/vBulletin/showthread.php?t=236832
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JaySS



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PostSubject: Re: where to find the correct 3:73 gears   Tue Feb 09, 2010 11:27 pm

The reason you aren't finding what you want is because you haven’t once told us in your 77 posts what your car is. Do you think that might be an issue?

Listen up: L99 = 7.5” rear, LT1 = 8.5” rear.

Since you did post a couple pics – none of them conclusive though - it appears that you have dual exhaust. Those, and wanting to delete the engine driven fan implies that you have a B4U and therefore the LT1. Want to take a stab at that rearend size now?

Now that we’ve got that straight.

Focuztech has the 3.73 rear gears and reluctor that you want. Buy the best set they offer. The gear oil and gasket to open it up after the install if something doesn’t seem right will be about the same as the difference in price. Don’t cheap out on the install. If you don’t have someone that you know can do it right, find a shop that can and pay them what they ask. Chasing a poor install will cost more time, money and aggravation than you want to go through. You do not need speedometer drive gear for the transmission, it is adjusted in the PCM. You will need to have it reflashed after the install to adjust for the gear change.

People here are more than willing to help, but they are flying blind if you don’t take a few minutes to help them help you. Time to take some responsibility for asking the right questions.

Thanks, I’ll be here all week. Try the veal.

- J
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PostSubject: Re: where to find the correct 3:73 gears   Wed Feb 10, 2010 5:05 pm

Well, Ok then. Yes it is an LT1. It has 2:93s in it now. And according to the RPO codes it's a limited slip posi. Thanks guys. tongue
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No Moa

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PostSubject: Re: where to find the correct 3:73 gears   Wed Feb 10, 2010 6:49 pm

lol, Jay, the veal sucks! lol.

Jay is right, find a good garage or a good GM mechanic to do it. Im using some used ones that i have, cause i couldn't afford a new set right now.
Good luck.
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