[astro932]

ok so im looking to buy a new 3.73 gear (from what i heard its the best to go with) and my question is before i do any thing how hard is this to do? will it take me too long?
thanks
Aaron

 

[woody31]

unless you have done this before and have all the micrometers and special tools
do not try this at home,.,,,, ask me how i know,,,,,$$$$ money well spent having someone who does it for a living,,,, im just saying,,,,,:beer:

 

[RTT]

Unless you have an overdrive tranny do not go any lower than 3.08. I just had a 3.08 posi installed. Took out a 2.41. Rpm's are a little high on the highway.
RTT

 

[astro932]

so no just screw in the new one and be done?

 

[centex396]

so no just screw in the new one and be done?

NO
This is not a "plug and play" like Woody said you have to have special tools.
Check this thread.
http://www.elcaminocentral.com/showthread.php?t=52460

 

[TrannyMike]

Aaron no disrespect intended here, but this looks like a job for a tech to do at a shop, or if you have an automotive tech friend.

This job would take tools that the average home mechanic doesn't have. Good Luck! :beer:

 

[LOCKJAW]

X2 what Mike said. Building a rear up takes experience, tools and a patient careful tech.

 

[darbysan]

Easiest way to accomplish this is to find a Posi rear from a Monte Carlo SS. They came with 3.42 up until 86, then 3.73. They are a direct bolt-in. With the 3 speed trans you have, I would definitely not go above 3.42. I had 3.08 in mine, and swapped in the 3.42. It ran like it had a new engine in it, but hwy RPM's will be above 3000. With 3.73, hwy RPM's could approach 3500.