Is this offer for a BOP rear end a good deal??

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Old February 8th, 2014, 07:31 PM
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Is this offer for a BOP rear end a good deal??

So this guy on craigslist shot me this offer. Just want to hear from you guys if this is a good deal...

"I have a rear end that came from under my 70 Monte Carlo It is a BOP Rear so it would be a right fit for you 71 Cutlass. It has 3:55 Gears and a new Eaton Posi. Contact me and let me know what you would be interested in offering. It is in my way and I would like to see it go to good use."

Well that's what he said to me. Is it a good deal?
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Old February 8th, 2014, 07:52 PM
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Fyi

Originally Posted by 19cutlass71supreme
So this guy on craigslist shot me this offer. Just want to hear from you guys if this is a good deal...

"I have a rear end that came from under my 70 Monte Carlo It is a BOP Rear so it would be a right fit for you 71 Cutlass. It has 3:55 Gears and a new Eaton Posi. Contact me and let me know what you would be interested in offering. It is in my way and I would like to see it go to good use."

Well that's what he said to me. Is it a good deal?
There are no 3.55 gear sets for 8.5" rear ends so this is an 8.2" rear end. Not overly strong but if the price is right it is worth having. Not recommended for anything more than a small block powered car on street tires. With sticky tires and big block torque it will go kaboom!
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Old February 8th, 2014, 09:30 PM
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Is there a difference between rear end like transmission bellhousings?.
A chance for me to learn some more.


If so this begs the question; why has a Monte Carlo got a BOP rear end?.


Roger.
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Old February 8th, 2014, 09:41 PM
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the Monte carlo was kind of a step up from the chevelle, so even SB cars often had 12 bolt chevy rear ends in them- So people would buy a used monte and take all the good stuff out, sometimes an "extra" rear would get stuffed back in to keep it a roller.

A lot of monte's got stripped of their bucket seats, consoles Round pod dash, 12 bolt rears, 454's and SB 400s.
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Old February 9th, 2014, 05:22 AM
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Originally Posted by RAMBOW
the Monte carlo was kind of a step up from the chevelle, so even SB cars often had 12 bolt chevy rear ends in them- So people would buy a used monte and take all the good stuff out, sometimes an "extra" rear would get stuffed back in to keep it a roller.

A lot of monte's got stripped of their bucket seats, consoles Round pod dash, 12 bolt rears, 454's and SB 400s.

Seems like if they were equipped with a 350 4bl carb they received 12 bolt rears, 350 with a 2bl carb got 10 bolt rears.

Also a lot of 402 big block Montes were made.

Henry
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Old February 9th, 2014, 06:47 AM
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So surely we should be talking about 10 bolt or twelve bolt (or others if available) rears?.
I understand the different GM divisions made their own engines for their own cars up 'til the '80s anyway, and from the late '60s GM cars shared the Turbo Hydramatic transmissions in its various forms. Were rear ends unique to each division, and if so when did they become a shared part?.


Roger.
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Old February 9th, 2014, 07:57 AM
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Fyi

Originally Posted by rustyroger
So surely we should be talking about 10 bolt or twelve bolt (or others if available) rears?.
I understand the different GM divisions made their own engines for their own cars up 'til the '80s anyway, and from the late '60s GM cars shared the Turbo Hydramatic transmissions in its various forms. Were rear ends unique to each division, and if so when did they become a shared part?.


Roger.

There are numerous varieties of 10 bolt rear ends so this is not just a 10 bolt vs 12 bolt discussion.
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Old February 9th, 2014, 11:46 PM
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Originally Posted by oldsmobiledave
There are numerous varieties of 10 bolt rear ends so this is not just a 10 bolt vs 12 bolt discussion.


Were some only for BOP and others exclusive to Chevrolet?.
What is the difference between a BOP rear end and others?.


Roger.
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Old February 10th, 2014, 01:13 AM
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Originally Posted by 66400
Seems like if they were equipped with a 350 4bl carb they received 12 bolt rears, 350 with a 2bl carb got 10 bolt rears.

Also a lot of 402 big block Montes were made.

Henry
That is true the 4bbl 350 got the 12 bolt rears.
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Old February 10th, 2014, 05:07 AM
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So would a drum-to-drum bop out of a 70 Monte Carlo fit right under my 71 cutlass.
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Old February 10th, 2014, 09:52 AM
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Originally Posted by 19cutlass71supreme
So would a drum-to-drum bop out of a 70 Monte Carlo fit right under my 71 cutlass.

Bolts right in, driveshaft lenght may differ. Henry
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