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05-18-2001, 11:31 AM
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#1 |
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Dirk Diggler
Join Date: Feb 1999
Location: SLOATSBURG, NY
Posts: 1,931
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ok terrific..am i sitting on a bomb now?
lets see for starters..i dont know how to put this..well basically i blew my rear doing powerbrakes..didnt strip the gears, didnt break an axel, i literally ripped my pumpkin in 1/2, and my passenger side axel tube ripped out!!!!!!!!
ok now for the question..i put in a '90 7.5 rear out of a 4banger AOD convert..it seams to have 3.73's in it..how strong is this thing???does it have anykind of posi in it or is it a open diff???i mean this is the rear that the 5.0's used till '85 aint it??basically do i have to baby this thing or will it handle the measle power that i have ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch |
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05-18-2001, 03:13 PM
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#2 |
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Registered Member
Join Date: May 2001
Location: Amarillo, Texas, 79107
Posts: 78
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Start looking for an 8.8. . .I tried to use the same logic last year and wound up breaking 2 7.5" rearends. (I had a couple of them laying around is why I went through two)
They just won't hold up. |
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05-18-2001, 04:55 PM
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#3 |
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Guest
Posts: n/a
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The 4 bangers had to have the extra gear to physically move, but they don't have traction-lok. I have a 7.5" in my stang and it's coming out ASAP, don't waste your time with the 7.5" i've heard of people destroying those rearends with stock engines, but i've yet to hear of some one break an 8.8" without SEVERE abuse with slicks and clutch dumping.
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05-18-2001, 06:23 PM
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#4 |
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Dirk Diggler
Join Date: Feb 1999
Location: SLOATSBURG, NY
Posts: 1,931
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well what happened was that i would get wheel hop 1/2 the time..i put on mac upper and lower control arms and still got it..it turned out to be that my rear was allready loose then that night i was powerbraking 2nd gear, some wheel hope started, i stayed into it like a moron and snap..
------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch |
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05-18-2001, 06:30 PM
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#5 |
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Registered Member
Join Date: May 2001
Location: Amarillo, Texas, 79107
Posts: 78
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FYI.. One of my son's freinds has a 99 GT and it already lost a rearend. Warrany took care of it but man what a noise it was makin. An AOD at that
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05-19-2001, 09:37 AM
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#6 |
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dude5l
Join Date: May 2001
Location: Grande Prairie, Alberta, Canada
Posts: 603
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wow! What a great chance to install a 9" and never have a rear diff. problem again. They are cheap at wrecking yards, unlimited supply of parts, and pretty much bulletproof. You may have to narrow it slightly if you can't find one from a '57. If you can find one from a lincoln versailles they have disc brakes as a bonus. Good luck!
------------------ B.R. L.X. 5.0 coupe Cruise control,power mirrors,...and Thats it! |
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05-22-2001, 09:14 PM
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#7 |
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Registered Member
Join Date: May 2001
Location: Borger, Texas, USA
Posts: 3
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Change to the 8.8. I have a basically stock 84 GT it had the 7.5 in it. The rearend didn't stand up long after I dropped the gears to 3.73.( A week to the day!!!) I now have a 8.8 with 4.10, but i havnt got to go to the track yet. Maybe next week!!
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05-22-2001, 09:17 PM
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#8 |
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Registered Member
Join Date: May 2001
Location: Borger, Texas, USA
Posts: 3
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Change to the 8.8. I have a basically stock 84 GT it had the 7.5 in it. The rearend didn't stand up long after I dropped the gears to 3.73.( A week to the day!!!) I now have a 8.8 with 4.10, but i havnt got to go to the track yet. Maybe next week!!
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05-23-2001, 11:33 AM
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#9 |
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Dirk Diggler
Join Date: Feb 1999
Location: SLOATSBURG, NY
Posts: 1,931
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IM DIGGING THE NEW 7.5 REAR 3.73'S...my car is faster than with the 4.10's..my cam recremends 3.55-3.73 becasue of the tons of tourque and its right..i put an instant 10 cars on sunday night on a built 87 turbo porshe..and thats from a 3rd gear roll on!!!i never thought i would take a turbo car upstaris like that..and i waited till his boost kicked up b4 i went..
and also the rear is holding up and does get POSI!!!i better not keep beating on it cuz im selling the 7.5 with the car ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch |
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