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Re: 8 3/4 strength poll!!
[Re: hemiluver]
#110683
08/26/08 03:46 PM
08/26/08 03:46 PM
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Joined: Jan 2008
Posts: 199
douglasville,ga
ramrod
member
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member
Joined: Jan 2008
Posts: 199
douglasville,ga
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I've put 500+ passes on mine. W2 smallblock, torqueflite, 3000lb A-body. Spool, aftermarket axles, 4.86 gear, green bearings, 14 inch wide slicks. 10.90 in the quarter. It's been absolutely maintenance free.
"That Plymouth had a Hemi with a Torqueflite."
-Driver
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Re: 8 3/4 strength poll!!
[Re: hemiluver]
#110689
08/26/08 05:16 PM
08/26/08 05:16 PM
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Joined: Mar 2007
Posts: 2,525
Louisville, KY
E-Ticket
master
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master
Joined: Mar 2007
Posts: 2,525
Louisville, KY
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Challenger, 3400#'s, trans. brake, ladder bars, 6:20's equals a bent braced 8-3/4 housing.....it now has a 4-link and a Dana! If your running high 11's, low 12's and so on....you should be fine with an 8-3/4 but like "scratchnfotraction" said, back brace it & go... If your going to use an 8-3/4, I would definitely brace it. Ladder Bar cars are real hard on rear end housings more so than 4-link cars and if your just using super stock leaf springs & or Cal Tracs or something like that, a braced 8-3/4 should be fine. One more thing....the shorter the housing, the stronger it is and less "likely" to bend. 
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Re: 8 3/4 strength poll!!
[Re: hemiluver]
#110692
08/26/08 08:34 PM
08/26/08 08:34 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,942
U.S.S.A.
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Quote:
Ok thanks for some info,but as said what real #'s are we talking,give me ETs and weights. And to all you guys,YES WE KNOW D-60's are the strongest.But for a guys with an 8 3/4 what can we push the limits too-and have longevity.
how about telling how YOU WILL USE THE CAR , what tires , 4 speed or automatic , dumping the clutch at 5000 rpm with slicks ???
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Re: 8 3/4 strength poll!!
[Re: Neil]
#110694
08/26/08 08:42 PM
08/26/08 08:42 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,942
U.S.S.A.
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Quote:
F.A.S.T guys have skinny reproduction bias-ply tires and probably leave at relatively low rpm's because of that fact.
ding ding ding .... WINNER
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Re: 8 3/4 strength poll!!
[Re: hemiluver]
#110697
08/26/08 09:18 PM
08/26/08 09:18 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,942
U.S.S.A.
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Quote:
Thanks guys,
As far as launching the car I posted it in my first one but neglected to on this one. The cars a 68 RR 4spd 4:30's the car made 380 hp at the tire before I installed a Landy built 174 B&M supercharger with 6lbs of boost the car should make 670hp at the crank and a bit over 500 at the tire. I used to launch at 4k naturally aspirated but now roll out at 1800 to 2k due to tire spin. It now runs 28x11.5 Hoosier quick time pro's before I had MTs street ET's which were 1" narrower at the footprint. The cars best naturally was 13.01 I've yet to make a good clean pass blown. Sounds slow? But remember I'm at Bandimere in Colo with an alt of 5800 ft which after correcting ='s way over 6500 ft-You flat landers are lucky!By the way the car weighs 3730 with me in it!Thanks again-Gary
That rear is on borrowed time , as you have already found out with your sure grip making weird noises .
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Re: 8 3/4 strength poll!!
[Re: JohnRR]
#110699
08/26/08 09:33 PM
08/26/08 09:33 PM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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My sons Dart runs 11.40's at about 3600 lbs and has had the same 8-3/4 in it since 1997. My 63 runs 11.50's and has had it's 8-3/4 in it for 2 years since I got it on the road. Both are stock rears with stock axles but I did put a Detroit Locke center section in mine. And both are auto's with Dynamic 9.5 converter's. It should hold up fine in a low 12 high 11 car and even better with after market axle's. Ron
Last edited by 383man; 08/26/08 09:36 PM.
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