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Re: when to upgrade from an 8 3/4?
[Re: mikeysmopars]
#1324964
10/24/12 08:23 AM
10/24/12 08:23 AM
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Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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Honestly if I had it to do over I'd go with a Dana. I have a lot of money in my 8.75 with a spool, the MP aluminum case and pro gears that are only available in one ratio, a 4.86, so in hindsight if you are going to have to narrow it, buy axles and all that just get a Dana and be done with it. 
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: when to upgrade from an 8 3/4?
[Re: racerx]
#1324968
10/24/12 05:34 PM
10/24/12 05:34 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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I use an 8-3/4 in my 63 and so far have run 10.70's and it still has stock axles in it. Its an auto car that goes just over 3700 lbs and other then the Detroit Locker it is all stock. Now I only race my car 2 or 3 times a year at the most and usually just a test & tune where I only make a few passes. I did not race it at all this year because of some personal problems. But I want to go to a Dana and would have if I had the money when I built my 493. If you have the cash go with the Dana as its good insurance. And if you blow the 8-3/4 you will be pulling the trans to fix the overrunning clutch (sprag). I am pushing my luck everytime I race my 63 and I know it but I can not afford a Dana right now or I would have one. Ron
Last edited by 383man; 10/24/12 05:35 PM.
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Re: when to upgrade from an 8 3/4?
[Re: Thumperdart]
#1324974
10/24/12 10:39 PM
10/24/12 10:39 PM
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Joined: Jan 2007
Posts: 437
south central pa
bdaz smblk
mopar
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mopar
Joined: Jan 2007
Posts: 437
south central pa
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I've been 9.0's 150 at 3,200 with a 8 3/4 with 1.20 couple 60 ft.
I`ve seen your responces to this kind of post before and am curious if you`d shoot your bad-azz combo for us to see.............. 
What all would you like to know about it.The car has a nice w8 smallblock with a 727 true 29.5 x10.5 tire with exhaust full interior including a back seat all lights work could drive it on the street if i trusted all the idiot drivers now days (LOL).If u want to know more just say.Thanks Kenny
I`ll say..........NICE is an understatement..........9.0`s, small block n/a, 3200lbs..........that doesn`t happen everyday.........
Thanks your car runs dang good too.I didn't even have the car out this year but hope to lighten the car up and be racing again sometime.If i wasn't broke as a dang on joke i would have a chrome moly cage in this car and save alot of weight.LOL
3120lb, small block, 10.5" tire, NA, through exhaust, full int, WITH 83/4 REAR, 9.0 at 150mph
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Re: when to upgrade from an 8 3/4?
[Re: dirt]
#1324975
10/24/12 11:05 PM
10/24/12 11:05 PM
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Joined: Jan 2004
Posts: 8,248
fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,248
fredericksburg,va
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Quote:
I am working on a scamp for a friend and its going to be a race car. I am back halfing it probably with ladder bars. The motor is a 440 and used to run 11.60 in a stock weight 70 cuda. With an automatic. He asked what i thought about the8 3/4 he has. It needs narrowed yet but he allready has it. I thought it would be fine. But now he is talking about stroking the motor and getting better heads.
So at what point would you say the 8 3/4 needs changed out for a dana 60? If there is a point.
Thanks, kenny [/quote
Right after you brake the 8 3/4 .Put a dana in and forget it for years
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but if i was smart i'v would of did a Dana/9" 
