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Old 05-30-2012, 10:09 AM   #1 (permalink)
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what is difference between 8" and 9" rearend.

What do you measure, do you count bolts, which is better, can you tell what is what without opening it up?
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Old 05-30-2012, 10:23 AM   #2 (permalink)
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Re: what is difference between 8" and 9" rearend.

Well I was answering you on your other thread and now I just think that best thing for you to do is to describe what your plans with the car is.

If you are just trying to get a 5 lug pattern in the back then i would suggest going with an 8 inch out of a mustang falcon comet ranchero that came with 5 lug pattern.

If you are trying to do a little street strip action I would go with an 8.8 or 9 inch as they are stronger and proven rear ends that can be built up to handle anything.
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Old 05-30-2012, 10:28 AM   #3 (permalink)
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Re: what is difference between 8" and 9" rearend.

Hey Blue - there are a number of identifying features between the two 'front-loader' 8 and 9-inch axles, but the simplest is the "bottom bolts" trick. See KevinStang's page for some pics and more info.

As far as which is better, the 8" in lighter and will hold 400 hp on street tires reliably, and less on slicks and harsh treatment. The 9" is heavier but can hold more power stock, as well as be built-up to take tremendous power, and parts are everywhere. While there are other rears that can be built to take similar or even more power, they are considerably heavier for the power they can hold than the legendary 9". HTH

David
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Old 05-30-2012, 01:27 PM   #4 (permalink)
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Re: what is difference between 8" and 9" rearend.

Quote:
Originally Posted by PSIG View Post
Hey Blue - there are a number of identifying features between the two 'front-loader' 8 and 9-inch axles, but the simplest is the "bottom bolts" trick. See KevinStang's page for some pics and more info.

As far as which is better, the 8" in lighter and will hold 400 hp on street tires reliably, and less on slicks and harsh treatment. The 9" is heavier but can hold more power stock, as well as be built-up to take tremendous power, and parts are everywhere. While there are other rears that can be built to take similar or even more power, they are considerably heavier for the power they can hold than the legendary 9". HTH

David
Thanks for all the info, learning a lot in a short time ...Blue
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