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Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: GY3] #2084590
06/02/16 12:44 PM
06/02/16 12:44 PM
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Crizila Offline
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To try and simplify this "many times" kicked around subject. Most streetable to least streetable = cone type, clutch type, locker type, spool. Just the opposite for the track. Mr Norms test; run the car up against a post, jack up one rear wheel, dump it in gear and stand on the gas peddle. If you can smoke the rear tire that is on the ground, the posi unit is good. Guess it was faster and cheaper than the torque wrench test. grin You have to come up with your own definition of streetable. All performance cars of the 60's / 70's came from the factory with clutch style units. They worked fine on the street in the 3 - 400 HP range. On the track with large slicks and another 100 HP added, They're life span was cut in half.


Fastest 300
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: GY3] #2084594
06/02/16 12:52 PM
06/02/16 12:52 PM
Joined: Nov 2011
Posts: 2,154
Its a TRAP!
DARTH V8Я Offline
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Its a TRAP!
Spool: hated it on the street.
Detroit Locker: Put one in my 00 Silverado, love it on the street & mud/snow.
cone/clutch factory suregrip.. was great till I hooked real hard one day lol.


When it takes more than a sweet mullet to prove you rule at the trailer park..
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: 383man] #2084598
06/02/16 01:02 PM
06/02/16 01:02 PM
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Puyallup, WA
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StealthWedge67 Offline
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Originally Posted By 383man
Originally Posted By StealthWedge67
I ran a locker for a few years. It wasn't loud or anything, and it stood up to my abuse. Only thing I didn't like was that it pushed the car left & right when on & off the throttle. Wasn't really a big deal, until I started doing more bracket racing, and suddenly racing the stripe became an adventure when the car wanted to dart around at 115mph when I chopped the throttle.

I went to a spool this past winter, and I really can't figure out why people make a big deal out if it. Knowing what I know now, I'd choose a spool over the locker for a street / strip car. Sure the inside tire chatters on tight slow corners..... big deal.




Its funny as I hear some say that about their Lockers but I have never had that happen with mine. It always stays straight and true on or off the gas in the traps. My exhaust is not real loud but I never hear much of the clicking. But a little electric fuel pump noise dont bother me either and I see alot complain about that also. I grew up with hearing the electric pump when the key was turned on as you knew it was working that way and it is a muscle car/hotrod so a little noise dont phase me any. But honestly I have never felt the side to side pull when on and off the throttle in the traps or anytime for that matter. Guess thats why I like my Detroit Locker so much and dont want to run a spool on the street. Course many have their prefrences and you have to use what you like. Ron


As I'm sure you've noticed, Ron; it seems that everyone with a locker has a different experience. I agree with you that it wasn't a neusance at all on the street as some people describe. I never heard any clicking sounds or anything like that. I would have stuck with it if it wasn't for the L/R pushing thing. Plus I wanted to go to 35-spline axles.


LemonWedge - Street heavy / Strip ready - 11.07 @ 120
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: GY3] #2084650
06/02/16 03:13 PM
06/02/16 03:13 PM
Joined: Feb 2011
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Nebraska
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A locker and spool need rear tires to be swapped side to side regularly. ANY stagger in rear tire diameter with be noticed.


Mopar to the bone!!!
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: StealthWedge67] #2084751
06/02/16 06:32 PM
06/02/16 06:32 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
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383man Offline
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Originally Posted By StealthWedge67
Originally Posted By 383man
Originally Posted By StealthWedge67
I ran a locker for a few years. It wasn't loud or anything, and it stood up to my abuse. Only thing I didn't like was that it pushed the car left & right when on & off the throttle. Wasn't really a big deal, until I started doing more bracket racing, and suddenly racing the stripe became an adventure when the car wanted to dart around at 115mph when I chopped the throttle.

I went to a spool this past winter, and I really can't figure out why people make a big deal out if it. Knowing what I know now, I'd choose a spool over the locker for a street / strip car. Sure the inside tire chatters on tight slow corners..... big deal.




Its funny as I hear some say that about their Lockers but I have never had that happen with mine. It always stays straight and true on or off the gas in the traps. My exhaust is not real loud but I never hear much of the clicking. But a little electric fuel pump noise dont bother me either and I see alot complain about that also. I grew up with hearing the electric pump when the key was turned on as you knew it was working that way and it is a muscle car/hotrod so a little noise dont phase me any. But honestly I have never felt the side to side pull when on and off the throttle in the traps or anytime for that matter. Guess thats why I like my Detroit Locker so much and dont want to run a spool on the street. Course many have their prefrences and you have to use what you like. Ron


As I'm sure you've noticed, Ron; it seems that everyone with a locker has a different experience. I agree with you that it wasn't a neusance at all on the street as some people describe. I never heard any clicking sounds or anything like that. I would have stuck with it if it wasn't for the L/R pushing thing. Plus I wanted to go to 35-spline axles.



I am sure if I felt mine doing the pushing from side to side I would not like my Locker either. I agree many feel different about them as we can tell just by this thread. You have to go with what you feel good with. up Ron

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: GY3] #2088077
06/08/16 12:06 AM
06/08/16 12:06 AM
Joined: Jul 2009
Posts: 792
massachusetts U.S.A.
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1969ronnie Offline
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hi johnrr,so is the true-trac another door stop like the cone-clutch? boy... a lot of door stops around. ronnie

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: 1969ronnie] #2088273
06/08/16 12:01 PM
06/08/16 12:01 PM
Joined: Jan 2003
Posts: 74,970
U.S.S.A.
JohnRR Online rolleyes
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Originally Posted By 1969ronnie
hi johnrr,so is the true-trac another door stop like the cone-clutch? boy... a lot of door stops around. ronnie


The one I have here of of the 8.8 is a door stop , your welcome to come as see the damage for yourself if you think otherwise.

The true track is probably fine if it's assembled correctly , it appears the one I have here was not, I never opened it up to begin with.


As far as any CONE type goes ... pure and utter GARBAGE , it's designed to fail.


running up my post count some more .
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: JohnRR] #2088371
06/08/16 02:27 PM
06/08/16 02:27 PM
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Posts: 2,853
Pattison Texas
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Originally Posted By JohnRR
Originally Posted By 1969ronnie
hi johnrr,so is the true-trac another door stop like the cone-clutch? boy... a lot of door stops around. ronnie


The one I have here of of the 8.8 is a door stop , your welcome to come as see the damage for yourself if you think otherwise.

The true track is probably fine if it's assembled correctly , it appears the one I have here was not, I never opened it up to begin with.


As far as any CONE type goes ... pure and utter GARBAGE , it's designed to fail.


the true trac for the 8 3/4 is a DOOR stop, they say the one for dana is ok.


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: an8sec70cuda] #2088843
06/09/16 02:03 AM
06/09/16 02:03 AM
Joined: Jul 2010
Posts: 1,845
Tampa
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Originally Posted By an8sec70cuda
I've had a spool in my cuda for about 15 years, street and strip, no problems ever. Dry pavement, wet pavement, doesn't matter. The issues some people blame on a spool ends up being from the tires they were running.

When a car (ANY car) makes a left or right hand turn, the outside wheel HAS TO rotate faster than the inside wheel, in order to maintain traction at both wheels. The tighter the turn radius, the faster the outside wheel must turn in relation to the inside wheel. Obviously, a spool does not allow that to happen, so something has to give, which usually means the inside tire slips as you negotiate the turn. That's what's happens to ANY car with a spool, and your back tires will wear out faster because of it.


Gone to the dark side with an LS3 powered '57 Chevy 210
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: DusterDave] #2088966
06/09/16 12:13 PM
06/09/16 12:13 PM
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
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Originally Posted By DusterDave
Originally Posted By an8sec70cuda
I've had a spool in my cuda for about 15 years, street and strip, no problems ever. Dry pavement, wet pavement, doesn't matter. The issues some people blame on a spool ends up being from the tires they were running.

When a car (ANY car) makes a left or right hand turn, the outside wheel HAS TO rotate faster than the inside wheel, in order to maintain traction at both wheels. The tighter the turn radius, the faster the outside wheel must turn in relation to the inside wheel. Obviously, a spool does not allow that to happen, so something has to give, which usually means the inside tire slips as you negotiate the turn. That's what's happens to ANY car with a spool, and your back tires will wear out faster because of it.

Pretty sure everyone understands that Dave. Wearing tires out faster is not one of the things most people complain about a spool causing...and not what I was referring to.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: GY3] #2089950
06/11/16 01:08 AM
06/11/16 01:08 AM
Joined: Jul 2009
Posts: 792
massachusetts U.S.A.
1
1969ronnie Offline
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hi john, yes I want to see this junk firsthand .pm me you are full. ronnie

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: GY3] #2237155
01/19/17 08:41 AM
01/19/17 08:41 AM
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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Akron, Ohio
Anyone use the $395 Power-lock from DoctorDiff?

http://www.doctordiff.com/8-3-4-clutch-type-sure-grip-powr-lok.html


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: GY3] #2237546
01/19/17 10:30 PM
01/19/17 10:30 PM
Joined: Jul 2009
Posts: 792
massachusetts U.S.A.
1
1969ronnie Offline
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massachusetts U.S.A.
hi pro, Doctor Diff recommended and sold me the clutch style until they get the bugs out of the 8.75 trac-lock. cass thought by xmas 2016 or jan 2017 that trac lock would do the modifications needed to work properly on the mopar 8.75 . its time to call him and ask about updated mods on trac lock. the doc's powerlok works perfect and is a moparts recommend from me. ronnie

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: 1969ronnie] #2788320
06/23/20 12:59 AM
06/23/20 12:59 AM
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Posts: 16,477
Canada
CrAzYMoPaRGuY Offline
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My diff is soon being put together and I was told TrueTrac was the way to go lol. Geez
3000 pounds, 650hp, big tires. Street car
Has anybody tried the SureTrac that Dr Diff has on his site?
The rear end guy suggested Auburn Pro or Eaton TrueTrac, said he didn't think a power locker would hold up....
It's the MP aluminum case if it matters....


CrAzYMoPaRGuY
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: CrAzYMoPaRGuY] #2788329
06/23/20 04:17 AM
06/23/20 04:17 AM
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Posts: 1,264
New York, USA
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Originally Posted by CrAzYMoPaRGuY
My diff is soon being put together and I was told TrueTrac was the way to go lol. Geez
3000 pounds, 650hp, big tires. Street car
Has anybody tried the SureTrac that Dr Diff has on his site?
The rear end guy suggested Auburn Pro or Eaton TrueTrac, said he didn't think a power locker would hold up....
It's the MP aluminum case if it matters....


True trac here in a dana60 for the past 12 years. About 100 track passes on it and around 5000 street/highway miles. Heavy stickshift b-body. 3900 lbs at 620 hp. No problems for me with it ever.


1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: Chargerfan68] #2788348
06/23/20 07:53 AM
06/23/20 07:53 AM
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Wichita
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GY3 Offline OP
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Funny, this thread is 4 years old!

What I ended up doing was going to a Dana 60 with a Dr. Diff spool and axles. I couldn't be happier!

This car sees a lot of street miles and gets to the track probably 5-6 times during the Summer. Only issues are with tight parking spaces but I can live with that.

I'm now spraying a 200 shot on top of what I was doing and everything works great!

The only thing I will recommend is throwing the wheel studs that come with the Dr. Diff axles in the trash and replacing with something like Strange. They were bending.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: Chargerfan68] #2788354
06/23/20 08:27 AM
06/23/20 08:27 AM
Joined: Oct 2004
Posts: 16,477
Canada
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I did the search function to see what was said on the TrueTrac lol
Not sure if the quality issues with the TrueTrac were ever fixed over the years but I see Dr Diff said on his site he doesn't sell anymore because of inconsistent quality issues.
I see the SureTrac he recommends looking at too.
It's an 8 3/4, I want to TRY to keep it 8 3/4, heavily back braced, load bolts to the caps, aluminum housing, 2900 pounds or thereabouts, 650hp, 650 ftlbs, foot brake, street tires, bushed four link. I am leaning towards 3.91 Richmond/Motive gears. 30 spline Dutchmman axles. I don't want to run a spool, not sure what is out there in 2020 I guess, lockers, or? Torsen?


CrAzYMoPaRGuY
Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: Uncle Barry] #2788452
06/23/20 01:06 PM
06/23/20 01:06 PM
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Posts: 11,706
Portage,michigan
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Originally Posted by Uncle Barry
I have a locker in my car with a Dana 60 and I absolutely hate it. I hear people talk how great they are and I just don't get it... Run a spool before you run a locker. At least it won't crack and bang lol. I ordered a S60 from Cass with the strange differential he talked me into. I hope it works good.


Of everything i have had, locker was easily the worst
When you got out of the gas on the street at high speed, car behaved scary
No such issues with Posi or spool
Never again with locker


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: B3422W5] #2788496
06/23/20 03:10 PM
06/23/20 03:10 PM
Joined: Aug 2011
Posts: 2,853
Pattison Texas
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Originally Posted by B3422W5
Originally Posted by Uncle Barry
I have a locker in my car with a Dana 60 and I absolutely hate it. I hear people talk how great they are and I just don't get it... Run a spool before you run a locker. At least it won't crack and bang lol. I ordered a S60 from Cass with the strange differential he talked me into. I hope it works good.


Of everything i have had, locker was easily the worst
When you got out of the gas on the street at high speed, car behaved scary
No such issues with Posi or spool
Never again with locker


I have the Strange S-trac S60 I got from Cass, it works AWESOME !!!


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Spool, truetrac, clutch sure grip or other for street/strip? [Re: CSK] #2788600
06/23/20 07:33 PM
06/23/20 07:33 PM
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Posts: 7,063
Indiana
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I ended up going with a Moser dana 60 with a spool in the Demon. I live 1 hour south of them and picked it up at their dock. Complete minus brakes, powder coated, 35 spline axles and 4.10 gears $2760

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