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post #1 of 11 (permalink) Old 02-14-2009, 02:55 PM Thread Starter
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mark 8 rear cradle

I have a complete rear cradle complete ,brakes,will it bolt directly to an mn12 chassis mine is a 94 tbird, what else would I need for this swap
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post #2 of 11 (permalink) Old 02-14-2009, 03:37 PM
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Are you planning on using the air suspension? If not you'd need a spring kit for the rear. Otherwise I'd assume that you'd need the praking brake cables and the hoses and lines for the disc brakes. Unless of course you already have disc brakes.

1995 Cougar XR7 4.6
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post #3 of 11 (permalink) Old 02-14-2009, 03:40 PM Thread Starter
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im gonna use my springs and shocks,im converting from drum to disk,can I use my master cylinder,or do I need a different one?
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post #4 of 11 (permalink) Old 02-14-2009, 04:49 PM
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Far as I know the master cylinder should be fine. But the rear lower control arms on the mark does not have spring perches. You need an adapter for the springs to work.

1995 Cougar XR7 4.6
1997 Thunderbird LX 4.6
1977 Country Squire 460
1985 Capri RS 5.0, 5spd
1997 Thunderbird 4.6
1984 Capri RS 5.0,5spd
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post #5 of 11 (permalink) Old 02-14-2009, 07:49 PM Thread Starter
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where can I get an adapter for the springs,or do I have to make it.
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post #6 of 11 (permalink) Old 02-15-2009, 02:35 AM
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where can I get an adapter for the springs,or do I have to make it.
I heard about some being made but I have yet to see a recent picture of new perches. Old perches have been made from aluminum and pop up once in a while on the market they go for about a 100 bucks. If you can design and develop an improved perch design, Id love to see the finished product.

Spinning pies like wheels.

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Now with new ball joints...again
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post #7 of 11 (permalink) Old 02-15-2009, 04:02 PM Thread Starter
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brake swap

well see what Im doing is a drum to disk swap from a mark 8 to 94 3.8liter t bird,I think I can swap the carriers then bolt up the calipers,do I have to chage the perportion valve,rthat part im not sure also will the axle shafts pull out of the center section ,and will the stub shaft that goes into a 8.8 center section go into a 7.5 center section.
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post #8 of 11 (permalink) Old 02-16-2009, 02:41 PM
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Originally Posted by yarmakracing View Post
where can I get an adapter for the springs,or do I have to make it.
There are spring conversion kits that have an adapter that is less sophisticated than what is usually for sale around here. ThomasA makes the really nice perches, but he only makes a batch once in awhile. I have a set of them and they're really nice. I don't know if I'm gonna use them but I don't think I'm ready to sell them either.

1995 Cougar XR7 4.6
1997 Thunderbird LX 4.6
1977 Country Squire 460
1985 Capri RS 5.0, 5spd
1997 Thunderbird 4.6
1984 Capri RS 5.0,5spd
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post #9 of 11 (permalink) Old 02-16-2009, 02:55 PM
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Quote:
Originally Posted by Splattered View Post
I heard about some being made but I have yet to see a recent picture of new perches. Old perches have been made from aluminum and pop up once in a while on the market they go for about a 100 bucks. If you can design and develop an improved perch design, Id love to see the finished product.
Did the perch idea from the stock arms never pan out?

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post #10 of 11 (permalink) Old 02-16-2009, 04:50 PM
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Axle shaft

Quote:
Originally Posted by yarmakracing View Post
well see what Im doing is a drum to disk swap from a mark 8 to 94 3.8liter t bird,I think I can swap the carriers then bolt up the calipers,do I have to chage the perportion valve,rthat part im not sure also will the axle shafts pull out of the center section ,and will the stub shaft that goes into a 8.8 center section go into a 7.5 center section.
Yes, The axles l fit either size center section. I have done it.
Swapped from 7.5 (4.10's) to 8.8 (3.90's), Never swapped An axle.

Paul

Paul [email protected]
1990 Thunderbird Circle Track Street Stock
351W 2bbl.
C-4 Auto
3.90 open rear
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post #11 of 11 (permalink) Old 02-17-2009, 02:05 AM
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You have to PM SyriusCougar95. He told me he wanted to use them. Thats all I know

Spinning pies like wheels.

DD driving my 20 year old project

Now with new ball joints...again
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