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USAJon
Turbo EFI
Joined: 20 Feb 2008
Posts: 1070
Location: Silver Spring, Maryland U.S.A.
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Post subject:
7.25 rear convert to disk brakes?
(Sat Feb 04, 2012 10:58 am)
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is there a safe/reasonable priced way to convert
a 7.25 rear to disk brakes? |
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sandy in BC
Board Sponsor & SL6 Racer
Joined: 08 Nov 2002
Posts: 4598
Location: Burton BC canada
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Post subject:
(Sat Feb 04, 2012 4:04 pm)
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| Yes,,,,,,buy a Ford Explorer 8.8. |
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Doctor Dodge
Guru
Joined: 12 Oct 2002
Posts: 3188
Location: Sunnyvale, Calif.
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Post subject:
(Sun Feb 05, 2012 9:43 am)
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The big lug 7 1/4 has the same backing plate bolt pattern as the 8 3/4 so there may be a way to use the more common rear DB 8 3/4 kits, on one of the later 7 1/4s.
Personally... a 7 1/4 is not a good place to invest a lot of money, time & effort... it's too easy to blow one up, even after doing everything "right".
DD
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USAJon
Turbo EFI
Joined: 20 Feb 2008
Posts: 1070
Location: Silver Spring, Maryland U.S.A.
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Post subject:
(Sun Feb 05, 2012 10:05 am)
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what area does it blow?
posi unit
ring/pinion
axles
twisted housing
and @ what HP rating
mine is stock w/headers |
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Romeo Furio
Turbo Slant 6
Joined: 04 Jan 2007
Posts: 796
Location: Boulder City Nevada
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Post subject:
(Sun Feb 05, 2012 11:22 am)
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| They were known for busting spider gears. How much power you planning on putting in front if it?? Stick or auto?? If under 300 hp you shouldn't have much of a problem. Long as no cowboyin' goes on.. I agree with Doc that the large bolt 10x2 1/2 drum one should use all the disc parts from a 8 3/4 kit.
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USAJon
Turbo EFI
Joined: 20 Feb 2008
Posts: 1070
Location: Silver Spring, Maryland U.S.A.
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Post subject:
(Sun Feb 05, 2012 11:55 am)
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| Romeo Furio wrote: | | They were known for busting spider gears. How much power you planning on putting in front if it?? Stick or auto?? If under 300 hp you shouldn't have much of a problem. Long as no cowboyin' goes on.. I agree with Doc that the large bolt 10x2 1/2 drum one should use all the disc parts from a 8 3/4 kit. |
How can you get 300 HP from a slant six that's streetable? |
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raPoM
Turbo Slant 6
Joined: 08 May 2009
Posts: 961
Location: Round Rock Tx
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Post subject:
(Sun Feb 05, 2012 12:20 pm)
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| USAJon wrote: | | Romeo Furio wrote: | | They were known for busting spider gears. How much power you planning on putting in front if it?? Stick or auto?? If under 300 hp you shouldn't have much of a problem. Long as no cowboyin' goes on.. I agree with Doc that the large bolt 10x2 1/2 drum one should use all the disc parts from a 8 3/4 kit. |
How can you get 300 HP from a slant six tha'ts streetable? |
Forced induction.
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USAJon
Turbo EFI
Joined: 20 Feb 2008
Posts: 1070
Location: Silver Spring, Maryland U.S.A.
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Post subject:
(Sun Feb 05, 2012 12:24 pm)
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| raPoM wrote: | | USAJon wrote: | | Romeo Furio wrote: | | They were known for busting spider gears. How much power you planning on putting in front if it?? Stick or auto?? If under 300 hp you shouldn't have much of a problem. Long as no cowboyin' goes on.. I agree with Doc that the large bolt 10x2 1/2 drum one should use all the disc parts from a 8 3/4 kit. |
How can you get 300 HP from a slant six that's streetable? |
Forced induction. |
OK
How much does that cost...? |
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Slanted Opinion
Turbo EFI
Joined: 22 Feb 2005
Posts: 1089
Location: Maine
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Post subject:
(Sun Feb 05, 2012 12:51 pm)
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I think Sandy's response was good. Get a rear out of an Explorer. You'll never break it, and you the disc brake setup is all on and ready to go.
Forced induction can be anything from a turbo scavenged from the junkyard (least expensive, but fair amount of customizing needed) to a full on supercharger and manifold, ala Pentastar Parts in Australia. (Most expensive). Look for the "Hurricane" manifold with the blower mounting.
You could also use Nitrous to raise HP. Cheaper and easier to begin with, but there's always the refills to keep up with.
- Mac
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Romeo Furio
Turbo Slant 6
Joined: 04 Jan 2007
Posts: 796
Location: Boulder City Nevada
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Post subject:
(Sun Feb 05, 2012 12:55 pm)
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| Check out Jan. issue of Car Craft, Slant Duster
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USAJon
Turbo EFI
Joined: 20 Feb 2008
Posts: 1070
Location: Silver Spring, Maryland U.S.A.
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sandy in BC
Board Sponsor & SL6 Racer
Joined: 08 Nov 2002
Posts: 4598
Location: Burton BC canada
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Post subject:
(Mon Feb 06, 2012 4:04 pm)
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You can blow up a 7 1/4 with a stock slant....we all have.
My Explorer 8.8 weighs 20 lbs more than the 7.25 it replaced. Available with Trac Loc and gears from 3.00 to 4.11.
 click to view full-version |
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Romeo Furio
Turbo Slant 6
Joined: 04 Jan 2007
Posts: 796
Location: Boulder City Nevada
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Post subject:
(Mon Feb 06, 2012 4:25 pm)
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Ya ,, it sure ain't cheap I got 14K in mine. 4K just in the head .
Someday I'm gonna learn how to do links. I have a hard enough time just typing. Guess I shoulda listened in school instead of chasing girls,,and playin' with cars.........Or was it the other way around?????
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Doc
Guru
Joined: 14 Oct 2002
Posts: 4973
Location: Working in Silicon Valley, USA
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Post subject:
(Mon Feb 06, 2012 4:27 pm)
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| USAJon wrote: | What area does it blow?
-posi unit
-ring/pinion
-axles
-twisted housing
and @ what HP rating
mine is stock w/headers |
All of the above.
And add: "Split the gear carrier in half". 
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USAJon
Turbo EFI
Joined: 20 Feb 2008
Posts: 1070
Location: Silver Spring, Maryland U.S.A.
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Post subject:
(Mon Feb 06, 2012 4:31 pm)
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| Doc wrote: | | USAJon wrote: | What area does it blow?
-posi unit
-ring/pinion
-axles
-twisted housing
and @ what HP rating
mine is stock w/headers |
All of the above.
And add: "Split the gear carrier in half". |
well seeing that it holds almost NO &#@% fluid, I would build extended trap door pan/add a temp quage run synthetic too. |
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