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How fast with a stock 8 3/4 #1593873 03/16/14 03:09 PM 03/16/14 03:09 PM
Joined: May 2004 Posts: 952 Stockholm, Sweden MrSixpack OP super stock
MrSixpack OP super stock Joined: May 2004 Posts: 952 Stockholm, Sweden	How fast have you been with a stock 8 3/4. 60 feet and et. Weight/Hp/tire size Just want to know when I will break my 8 3/4 Looking for a 9" or Dana,but they are hard to find here. I wonder if my 68 B-body Dana will fit my 1980 F-body that has stock frame rail and no modifications to the wheel wells. I will run 275 Micky T's drag radial. Let the bashing begin 1970 Super Stock Challenger ex. Paul Rossi 1968 Dodge Dart GT 340 1968 Dodge Charger /6 3 speed manual 1966 Chrysler 300 Loaded 1968 Dodge Charger R/T 440 1968 Mini Cooper

Re: How fast with a stock 8 3/4 [Re: MrSixpack] #1593874 03/16/14 03:21 PM 03/16/14 03:21 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I will assume you will back brace it... I was running mid 9s with a totally stock center... had just over 600 passes on it when the cap broke.. thats when I changed over to a alum center... on the stock one I was 2400# with 620 hp, 1.23 60', 13.5 X 31 slicks.. if you were to put load bolts on the back to touch the caps it helps alot

Re: How fast with a stock 8 3/4 [Re: MR_P_BODY] #1593875 03/16/14 03:28 PM 03/16/14 03:28 PM
Joined: Jul 2008 Posts: 1,534 bronx n.y O one bad fish pro stock
one bad fish pro stock O Joined: Jul 2008 Posts: 1,534 bronx n.y	they last pretty well

Re: How fast with a stock 8 3/4 [Re: one bad fish] #1593876 03/16/14 04:47 PM 03/16/14 04:47 PM
Joined: Jan 2008 Posts: 755 Rochester, PA (near Pittsburgh... 1 1974 474 Duster super stock
1974 474 Duster super stock 1 Joined: Jan 2008 Posts: 755 Rochester, PA (near Pittsburgh...	Mine made it into the 10.20 range, but was 60'ing around 1.30 range. Car weighed 3200#. Then is started clearing ring gears on a regular basis. Went to a Dana 60 then. As for a 68 Dana in an F-body. The spring perches will be inward 1/2" on each side. You can put one side on the pin & bolt it in place. Then just use a strap to pull the other side in. Only 1" total difference. The spring will go in that amount no problem. Have put 2 68 8 3/4's in my F-bodies w/no problem's at all there. Lots of tire space w/right offset wheels Thanks, Ken

Re: How fast with a stock 8 3/4 [Re: 1974 474 Duster] #1593877 03/16/14 05:03 PM 03/16/14 05:03 PM
Joined: May 2004 Posts: 952 Stockholm, Sweden MrSixpack OP super stock
MrSixpack OP super stock Joined: May 2004 Posts: 952 Stockholm, Sweden	Yes it is back braced, but still original axels and pumpkin with a 3.91 gear and clutch type limited slip. It will be exciting to see how it will work, I think twisting the axels are what will happen first. Thanks 1970 Super Stock Challenger ex. Paul Rossi 1968 Dodge Dart GT 340 1968 Dodge Charger /6 3 speed manual 1966 Chrysler 300 Loaded 1968 Dodge Charger R/T 440 1968 Mini Cooper

Re: How fast with a stock 8 3/4 [Re: MrSixpack] #1593878 03/16/14 05:08 PM 03/16/14 05:08 PM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	I have run 10.70's at 3700 lbs with an all stock 8-3/4. I know I am pushing my luck and want to go with a Dana some time when I can afford it. I use a Dynamic 9.5 street/strip converter as my car does not launch real hard but hard enough for me which I am glad as it does not seem to be to hard on the rear. But I only race a few times a year. Ron Last edited by 383man; 03/16/14 05:09 PM.

Re: How fast with a stock 8 3/4 [Re: 383man] #1593879 03/16/14 06:23 PM 03/16/14 06:23 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	Depends on the weight.. a backbraced 8.75 should be good into the 10's. I replace the axles in mine after people told me they are no good under 12.0 however they looked fine when removed. I want to back brace mine before I hit it w/ a 150 shot. [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: How fast with a stock 8 3/4 [Re: Mr.Yuck] #1593880 03/16/14 07:27 PM 03/16/14 07:27 PM
Joined: Dec 2010 Posts: 1,035 Missouri U.S.A. 7 71yelladustr super stock
71yelladustr super stock 7 Joined: Dec 2010 Posts: 1,035 Missouri U.S.A.	My experience is, 12 sec heavy car + 4 spd + 440 + slicks = broken 8 3/4. The ring and pinion will trashed. Never had any axle issues though. Keeping the weight down and driveline shock (no 6500 rpm clutch drops) will be the key to making an 8 3/4 live. 392 gen III hemi on E-85 727 trans Dana 60 10.02@134

Re: How fast with a stock 8 3/4 [Re: 71yelladustr] #1593881 03/16/14 07:42 PM 03/16/14 07:42 PM
Joined: Jan 2005 Posts: 3,635 Oakland, MI D dizuster master
dizuster master D Joined: Jan 2005 Posts: 3,635 Oakland, MI	My 100% stock 8 3/4 went best of 1.50 60ft in a 3700lb car. I took the axles out and they were all twisted up. Also, I tried (well accidentally tried) to leave REAL hard on it the last time out. Sheared the pinion off, but the stock axles survived. IMG_20130823_200437_896-1 by wright2305, on Flickr

Re: How fast with a stock 8 3/4 [Re: dizuster] #1593882 03/16/14 08:37 PM 03/16/14 08:37 PM
Joined: Jul 2006 Posts: 4,319 Puyallup, WA S StealthWedge67 master
StealthWedge67 master S Joined: Jul 2006 Posts: 4,319 Puyallup, WA	My experience was the differential itself broke, side gears sheared. Mine now is backbraced and has a locker in it with Dr.Diff axles. So far so good. LemonWedge - Street heavy / Strip ready - 11.07 @ 120

Re: How fast with a stock 8 3/4 [Re: StealthWedge67] #1593883 03/16/14 09:25 PM 03/16/14 09:25 PM
A Anonymous Unregistered
Anonymous Unregistered A	9.98 @ 139. No back bracing. 8076793-dudekrr.png (90 downloads)

Re: How fast with a stock 8 3/4 [Re: ] #1593884 03/16/14 09:42 PM 03/16/14 09:42 PM
Joined: Jan 2003 Posts: 3,000 Long Island, NY shakerjoe master
shakerjoe master Joined: Jan 2003 Posts: 3,000 Long Island, NY

Re: How fast with a stock 8 3/4 [Re: dizuster] #1593885 03/16/14 09:45 PM 03/16/14 09:45 PM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: My 100% stock 8 3/4 went best of 1.50 60ft in a 3700lb car. I took the axles out and they were all twisted up. Also, I tried (well accidentally tried) to leave REAL hard on it the last time out. Sheared the pinion off, but the stock axles survived. IMG_20130823_200437_896-1 by wright2305, on Flickr That makes me nervous. My best 60 is a 1.50 as I average from 1.50 to 1.53. I forgot I do have a Detroit Locker in my 8-3/4 but all the rest is stock including the axles. I will say I broke parts in an 8-3/4 with an 11.90 Dart that was a 340 with a 4-speed and I did launch it hard. I would tach it up to about 5500 and then floor it as I let the clutch out and it broke a ring and pinion and a few U-joints and twisted a driveshaft. My sons Dart has run 11.40's with a stock 8-3/4 with a 727 and neither his Dart or my 63 have broke our 8-3/4's even though both are alot faster then my old 4-speed Dart. But both our cars are auto's which are alot easier on the drivetrain. Ron Last edited by 383man; 03/16/14 09:47 PM.

Re: How fast with a stock 8 3/4 [Re: 383man] #1593886 03/16/14 10:49 PM 03/16/14 10:49 PM
Joined: Jan 2004 Posts: 3,837 Central Missouri Fort Leonard... mopar65 master
mopar65 master Joined: Jan 2004 Posts: 3,837 Central Missouri Fort Leonard...	I have a back braced 8-3/4 in my 3500 pound big block 73 dart. its got moser 30 spline axles/ spool and 4.30 Richmond gears.which after about 20 some passes has been holding up fine. with the 4.30 the car has been a best of 10.49 in the 1/4 and a 60 foot of 1.48. now when i first put the 440 in my dart i only got to make 4 passes till the Richmond 4.10 gears went boom. i ran a 10.66 in the 1/4 but only a 1.56 60 foot. when ever i get enough money saved up i will be putting a Dana in my 73 duster. here is a pic of the 4.10 gears. thanks Mopar65 8076935-005[1280x768].JPG (58 downloads) 3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727 10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come... ( SGT Miller) Proudly served 12 years in the US ARMY RESERVES support our troops

Re: How fast with a stock 8 3/4 [Re: mopar65] #1593887 03/16/14 11:18 PM 03/16/14 11:18 PM
Joined: Apr 2003 Posts: 1,627 anywhere@ anytime A actionange top fuel
actionange top fuel A Joined: Apr 2003 Posts: 1,627 anywhere@ anytime	Back braced housing, Mark Williams spool and 35 spline axles. 742 case. Richmond 3.91 gears. Leave the line at 2000 rpm. Runs a 10 teens, 10 twenties. Race weight is 3750 lbs. Still going. Where's Quicktree? LOL..

Re: How fast with a stock 8 3/4 [Re: MrSixpack] #1593888 03/17/14 12:59 AM 03/17/14 12:59 AM
Joined: Nov 2009 Posts: 102 NC O onefastindy member
onefastindy member O Joined: Nov 2009 Posts: 102 NC	I've been 5.80's in the 1/8 with 1.29 60ft with stock axles and sure grip before it twisted the housing. Now it's got a new one that's back braced with moser axles and spool with billet caps. 8077192-image.jpg (78 downloads) Last edited by onefastindy; 03/17/14 01:07 AM.

Re: How fast with a stock 8 3/4 [Re: onefastindy] #1593889 03/17/14 01:38 AM 03/17/14 01:38 AM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: I've been 5.80's in the 1/8 with 1.29 60ft with stock axles and sure grip before it twisted the housing. Now it's got a new one that's back braced with moser axles and spool with billet caps. Tell us more................. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: How fast with a stock 8 3/4 [Re: Thumperdart] #1593890 03/17/14 01:24 PM 03/17/14 01:24 PM
Joined: Aug 2008 Posts: 4,066 Mo. racerx master
racerx master Joined: Aug 2008 Posts: 4,066 Mo.	Quote: Quote: I've been 5.80's in the 1/8 with 1.29 60ft with stock axles and sure grip before it twisted the housing. Now it's got a new one that's back braced with moser axles and spool with billet caps. Tell us more................. ^^^What he ask^^^

Re: How fast with a stock 8 3/4 [Re: actionange] #1593891 03/17/14 01:30 PM 03/17/14 01:30 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	Quote: Back braced housing, Mark Williams spool and 35 spline axles. 742 case. Richmond 3.91 gears. Leave the line at 2000 rpm. Runs a 10 teens, 10 twenties. Race weight is 3750 lbs. Still going. Where's Quicktree? LOL.. I can tell you he's not wasting money on an 8/3/4 thats for sure

Re: How fast with a stock 8 3/4 [Re: MrSixpack] #1593892 03/17/14 01:53 PM 03/17/14 01:53 PM
Joined: May 2003 Posts: 1,751 Graham, WA P Polarapete top fuel
Polarapete top fuel P Joined: May 2003 Posts: 1,751 Graham, WA	It is relatively easy to build a Dana 60, because all you have to do is to narrow the axle tubes to fit your application, and they are straight, no curves. Moser, Strange and others have the housing ends you need. You just have to decide what brakes to use. I built the latest one from a Jeep J20 rear axle that was 40 years old. It came from a wrecking yard with a 4.10 gear on a PowerLock carrier with 35 spline axles and tapered Timken bearings, 12" drum brakes, 5 on 5.5" bolt pattern that will easily fit my '87 D100. The Dana had been rebuilt (new bearings, clutches & brakes) when I got it for $400.00. I put another $400.00 into it having 1 tube shortened and 1 axle shortened and resplined. Your experience may differ, but I am pleased 1986 Dodge Ramcharger 440 2wd, Bracket Racer Under Construction 1998 Ram 2500 QuadCab, new daily driver. 2008 Honda Element 2014 Carry-On 7x14 Cargo Trailer

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