833-4 speed & its limitations ????
#514735
11/02/09 10:52 PM
11/02/09 10:52 PM
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Joined: Aug 2006
Posts: 1,340
Pennsylvania
proshiftcharger
OP
pro stock
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OP
pro stock
Joined: Aug 2006
Posts: 1,340
Pennsylvania
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I know most of you guys are now running Jerricos etc. but...who is currently or has at least run a 833 in the past? At what point is to much HP for a 833 4 speed? How much does the weight of your car play a roll in the 4 speeds limitations? "833-HEMI 4 speed Aluminum box Proshifted by Liberty Mcleod Clutch/pressure plate SFI flywheel" 4 speed guys chime in please. thanks in advance, Doug 
Last edited by proshiftcharger; 11/03/09 08:10 PM.
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Re: 833-4 speed & its limitations ????
[Re: proshiftcharger]
#514738
11/03/09 09:00 PM
11/03/09 09:00 PM
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Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
64Post
master
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master
Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
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Quote:
I know most of you guys are now running Jerricos etc. but...who is currently or has at least run a 833 in the past?
At what point is to much HP for a 833 4 speed?
How much does the weight of your car play a roll in the 4 speeds limitations?
"833-HEMI 4 speed
Aluminum box
Proshifted by Liberty
Mcleod Clutch/pressure plate
SFI flywheel"
4 speed guys chime in please.
thanks in advance,
Doug
A local guy had that same trans in his '65 680 FWHP Hemi Coronet. He blew a hole in it in short order. Stay with the iron case.
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Re: 833-4 speed & its limitations ????
[Re: proshiftcharger]
#514739
11/03/09 09:15 PM
11/03/09 09:15 PM
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Joined: Dec 2004
Posts: 10,556
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,556
Rittman Ohio
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I was OK with an 18 spline box until I put the Mcleod Street-Twin in front of it.I learned quickly that I needed a loose clutch to keep it together.I split a 3-4 slider and broke a third drive gear and cluster.Now the most important thing to consider is weight and traction,if you have both of those then you need a clutch that slips. Gus 
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: 833-4 speed & its limitations ????
[Re: fourgearsavoy]
#514740
11/03/09 09:24 PM
11/03/09 09:24 PM
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Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
Old School
super stock
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super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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i have an 18 spline in my charger.it weighs 3750lbs with 707 rwhp.it does not hook well,has 275/60 street tires.i think wheelspin saves them.....
68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: 833-4 speed & its limitations ????
[Re: proshiftcharger]
#514741
11/03/09 10:46 PM
11/03/09 10:46 PM
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Joined: Aug 2003
Posts: 43,283
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,283
Bend,OR USA
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The correct answer is "it depends on your parts combination, HP and torque and traction". A 18 spline 833 will hold up a lot better to HP and traction than a 23 spline will, as fourgearsavoy has already said, a loose clutch covers up a lot of the weak points in the drivetrain. You have to feed the drivetrain in a four gear car with HP, you can feed it tires, clutches, ring and pinions, U joints, axle and so on, you decide which parts you want to feed the car  I ran a 70 Hemi Cuda 4 speed car in NHRA stock for several years in the mid 1970s, I used both Liberty and nash Pro shifted gears in both boxes, it ate the 3-4 slider and 3rd and 4th gears as well as a clutch disc about evry 40 runs  Clutch disc where cheap back then, the rest of the parts weren't  Good luck 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 833-4 speed & its limitations ????
[Re: proshiftcharger]
#514742
11/04/09 08:37 AM
11/04/09 08:37 AM
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Joined: Feb 2005
Posts: 5,207
Menomonee Falls
DemonDust
master
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master
Joined: Feb 2005
Posts: 5,207
Menomonee Falls
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Quote:
I know most of you guys are now running Jerricos etc. but...who is currently or has at least run a 833 in the past?
At what point is to much HP for a 833 4 speed?
How much does the weight of your car play a roll in the 4 speeds limitations?
"833-HEMI 4 speed
Aluminum box
Proshifted by Liberty
Mcleod Clutch/pressure plate
SFI flywheel"
4 speed guys chime in please.
thanks in advance,
Doug
I'd say toss the aluminum case, no strength there 
I have a hemi 4 speed with iron case.
I took my car for a severe street beating the other day  I took it up to 9600 rpms and shifted it was a little difficult, probably from the RPMS. My engines around 900hp. So I'll let you know when and how it breaks.
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Re: 833-4 speed & its limitations ????
[Re: DemonDust]
#514743
11/04/09 12:54 PM
11/04/09 12:54 PM
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Joined: Jan 2003
Posts: 75,083
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,083
U.S.S.A.
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Quote:
I'd say toss the aluminum case, no strength there
I have a hemi 4 speed with iron case.
I took my car for a severe street beating the other day I took it up to 9600 rpms and shifted it was a little difficult, probably from the RPMS. My engines around 900hp. So I'll let you know when and how it breaks.
what are you using for a clutch ?
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Re: 833-4 speed & its limitations ????
[Re: DemonDust]
#514746
11/04/09 05:29 PM
11/04/09 05:29 PM
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Joined: Jan 2003
Posts: 75,083
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,083
U.S.S.A.
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Quote:
I had a centerforce dual friction from my last engine. So I decided to use it.
that's probably part of your hard shifting issue ... 
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Re: 833-4 speed & its limitations ????
[Re: JohnRR]
#514747
11/04/09 05:39 PM
11/04/09 05:39 PM
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Joined: Feb 2005
Posts: 5,207
Menomonee Falls
DemonDust
master
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master
Joined: Feb 2005
Posts: 5,207
Menomonee Falls
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Quote:
Quote:
I had a centerforce dual friction from my last engine. So I decided to use it.
that's probably part of your hard shifting issue ...
You think it's not disengaging?
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Re: 833-4 speed & its limitations ????
[Re: DemonDust]
#514749
11/04/09 09:10 PM
11/04/09 09:10 PM
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Joined: Aug 2006
Posts: 1,340
Pennsylvania
proshiftcharger
OP
pro stock
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OP
pro stock
Joined: Aug 2006
Posts: 1,340
Pennsylvania
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Thanks for all your post, I appreciate it. Theres a lot of variables involved and every cars different. One thing I failed to mention was it is for strip use with slicks. Even though no HP/TQ numbers were given in your post its clear theres gonna be problems.... the better your traction and the more HP/TQ. Eventually i will have to upgrade to something else. For now maybe I'll just set the car up to spin a little off the line  its all a journey. thanks again, Doug
Last edited by proshiftcharger; 11/04/09 09:14 PM.
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Re: 833-4 speed & its limitations ????
[Re: SomeCarGuy]
#514750
11/05/09 10:06 AM
11/05/09 10:06 AM
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Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing
master
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master
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
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Quote:
Quote:
I ran the hemi 4 speed(crash box)(slick shifted) behind my C/A,Ultra/Stocker(fuel injected Hemi) for years,only issue was the imput shaft would eat the engagement teeth rather quickly(about every 30-40 runs.I fixed that with a Clutchflite  
I thought the ClutchFlite discussion a few months ago mentioned they were on the weak side?
I ran B&M Clutchflites and Fairbanks C/F in my C/A,Ultra/Stocker,A/FX and B/G Dragster.They were great but knowing what I know now I wouildn't get within a 1000 feet of one especially in the B/G dragster(front engine)like having a land mine setting between your legs.
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Re: 833-4 speed & its limitations ????
[Re: DemonDust]
#514751
11/05/09 12:32 PM
11/05/09 12:32 PM
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Joined: Jan 2003
Posts: 75,083
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,083
U.S.S.A.
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Quote:
Quote:
Quote:
I had a centerforce dual friction from my last engine. So I decided to use it.
that's probably part of your hard shifting issue ...
You think it's not disengaging?
at 9600 rpm , probably not completely
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