Re: 4 Speed -- What would you do / Choose?
[Re: hemisurfer]
#263537
03/24/09 10:43 AM
03/24/09 10:43 AM
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Joined: Mar 2003
Posts: 1,806 Newfoundland Canada
Mopar1
top fuel
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top fuel
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Quote:
Just curious how many 23 spline input shafts have you guys broken or twisted?
The best question on this post thus far and no answers to boot.
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Re: 4 Speed -- What would you do / Choose?
[Re: sixbbl69]
#263539
03/24/09 11:00 AM
03/24/09 11:00 AM
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Joined: Jan 2007
Posts: 170 Florida
hemisurfer
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Posts: 170
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Brewers and Passon weighed in I guess they don't know what they are talking about.
Factory SS and Pro Stocks required a factory installed transmission back in the day. I would assume this has something to do with it. Perhaps Mopar wanted to reduce warranty repairs from knuckleheads that did dumb things at the track.
---------------------------------------------------------------------------------------------------------------- If anybody has a 23 spline tranny that will work in a 69 B Body let me know.
I am willing to shell out 100 bucks for each tranny in good condition and I will take them away. Good deal since they are prone to fail. PM me if your interested.
Last edited by hemisurfer; 03/24/09 11:12 AM.
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Re: 4 Speed -- What would you do / Choose?
[Re: ScottSmith_Harms]
#263540
03/24/09 11:20 AM
03/24/09 11:20 AM
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Joined: Jun 2006
Posts: 1,152 Colorado
CuriousYella70
OP
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Quote:
My
For now run the 23 spline, you'll never hurt it on a street car. When you have the money buy a Passon 4 speed, they are awesome, gear spread isn't perfect but it's not terrible either. Send me one of your A-body 4 speeds, a late summer 1970 assembly date please
lol no problem Scott, i'll get right on that! I actually might have a late 70 set of pedals, not sure though so i'll check for ya -- What's up with not coming up and saying hi at MATS?? I know you saw me sitting behind dads Plum Crazy Challenger in the KU hat
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Re: 4 Speed -- What would you do / Choose?
[Re: sixbbl69]
#263545
03/25/09 11:33 AM
03/25/09 11:33 AM
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Joined: Jan 2003
Posts: 2,734 Charlotte, NC
446acuda
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Quote:
there must be some reason Chrysler put 18 spline transmissions in 440 hp and hemi cars in late 60's.must have run out of 23 spline.
Here is my take on that. The most violent of all Hemis were built in '64-5 and those Race Hemis found every weak link in the driveline which brought about the 18 spline trans and Dana in late '65 or so. Funny, because nothing had that kind of drivetrain breaking power after '65 except for the Hemi A-bodies.
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Re: 4 Speed -- What would you do / Choose?
[Re: CJK440]
#263546
03/25/09 11:46 AM
03/25/09 11:46 AM
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Joined: Jan 2003
Posts: 2,734 Charlotte, NC
446acuda
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Quote:
The other thing to consider is not all 23 spline's are the same. The steeper the first gear, the weaker the box. A 3.09 first gear is the weakest.
Not really an issue. You will break third gear way before slightly weaker low ratios become a problem. This may be something to consider on weak transmissions like the BW T-5 but not A833's.
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Re: 4 Speed -- What would you do / Choose?
[Re: Mopar1]
#263548
03/25/09 12:38 PM
03/25/09 12:38 PM
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Anonymous
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Anonymous
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Quote:
Quote:
Just curious how many 23 spline input shafts have you guys broken or twisted?
The best question on this post thus far and no answers to boot.
Well for one thing I hadn't been back to this post. I didn't realize that I gave the impression that a 23 spline was ready to break at any instant. In fact, towards the end of my S Cal days, I ran a 440 Cuda into the 11's with one. What I MEANT to imply that PROBABLY if you were a FULL TIME racer, and assuming you ran something with a lot of power you MIGHT not want to run one.
I stick by my guns about the Chrysler type OD, though. In "high" (really third) you are spinning a bronze bushed bear against a mainshaft for long periods of time, either that or you "really" have a three speed.
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Re: 4 Speed -- What would you do / Choose?
[Re: PAINT IT BLACK]
#263549
03/25/09 12:39 PM
03/25/09 12:39 PM
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Joined: Feb 2009
Posts: 982 W. Sacto CA. USA
phantomx
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W. Sacto CA. USA
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You might check to see if there is a Gear Vendor available for the 833. It won't look stock from underneath, but you will still have 4 non-O/D gears instead of just 3. Unless someone looked under the car, they'd never know it was there. Travis..
70 GTX project, orig 440-4, 4 spd, track pack, FC7, stripper/street racer special.
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Re: 4 Speed -- What would you do / Choose?
[Re: Bill MeLater]
#263552
03/25/09 06:29 PM
03/25/09 06:29 PM
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Joined: Jan 2007
Posts: 170 Florida
hemisurfer
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Check out the diameter of the 18 spline. It's overkill...I believe the hemi trans is coarse tooth input the gears are fine tooth for more contact area and the gears are brass bushed to reduce friction.
Last edited by hemisurfer; 03/25/09 06:30 PM.
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Re: 4 Speed -- What would you do / Choose?
[Re: Bill MeLater]
#263553
03/25/09 06:33 PM
03/25/09 06:33 PM
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Joined: Aug 2006
Posts: 1,884 Tracy, CA, USA, Earth
rabid scott
"You're Where?"
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"You're Where?"
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Quote:
Way to go Phantomx...Now we're all gonna know it's there....BTW why is it that more splines = more tooth contact = stronger, everywhere but A833 input shaft???
18 spline input is physically larger. 23 spline is 1", 18 is what, 1 1/8"?
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