833 won't shift out of 2nd under high RPM
#3125043
02/27/23 02:42 PM
02/27/23 02:42 PM
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Joined: Jun 2004
Posts: 936 Elizabethtown, KY
6T9Hemi
OP
super stock
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OP
super stock
Joined: Jun 2004
Posts: 936
Elizabethtown, KY
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My 23 spline A body 833 won't shift out of 2nd gear under high RPM. Soon as the RPM drops to around 2500, it will shift like normal. This happens around 5000-5500. Any ideas. It's not the driveshaft.
1969 340 4 Speed Swinger R4, black vinyl, white butt stripe, 3:91
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Re: 833 won't shift out of 2nd under high RPM
[Re: 6T9Hemi]
#3125054
02/27/23 03:38 PM
02/27/23 03:38 PM
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Joined: Oct 2005
Posts: 293 Anchorage, Alaska
metallicareload
enthusiast
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enthusiast
Joined: Oct 2005
Posts: 293
Anchorage, Alaska
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What about shifting in other gears? Problem just started or always like this? Pilot bearing or bushing is my first guess. Ball detent side cover?
440, 4-Speed, 3.54 1968, when Dinosaurs ruled the Earth
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Re: 833 won't shift out of 2nd under high RPM
[Re: metallicareload]
#3125056
02/27/23 03:45 PM
02/27/23 03:45 PM
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Joined: Jun 2004
Posts: 936 Elizabethtown, KY
6T9Hemi
OP
super stock
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OP
super stock
Joined: Jun 2004
Posts: 936
Elizabethtown, KY
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What about shifting in other gears? Problem just started or always like this? Pilot bearing or bushing is my first guess. Ball detent side cover? Just put the transmission in. Like this from day one. New pilot bushing and ball detent cover.
1969 340 4 Speed Swinger R4, black vinyl, white butt stripe, 3:91
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Re: 833 won't shift out of 2nd under high RPM
[Re: 6T9Hemi]
#3125057
02/27/23 04:07 PM
02/27/23 04:07 PM
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Joined: Oct 2005
Posts: 293 Anchorage, Alaska
metallicareload
enthusiast
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enthusiast
Joined: Oct 2005
Posts: 293
Anchorage, Alaska
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New transmission? How did the stop ring/synchronizer look for that gear? And then bellhousing runout and parallelism?
440, 4-Speed, 3.54 1968, when Dinosaurs ruled the Earth
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Re: 833 won't shift out of 2nd under high RPM
[Re: Cab_Burge]
#3125072
02/27/23 04:58 PM
02/27/23 04:58 PM
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Joined: Jun 2004
Posts: 936 Elizabethtown, KY
6T9Hemi
OP
super stock
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OP
super stock
Joined: Jun 2004
Posts: 936
Elizabethtown, KY
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I've had that problem, is was cause by the clutch not having enough travel on the throw out bearing not disengaging the clutch plate completely If your clutch disc is a street unit with a wave (marcel spring) spring in the middle of the clutch disc you need to adjust the clutch linkage so you have at least .060 air gap between the pressure plate or the flywheel and the disc with the clutch pedal depressed like you shift it at. If it is a race disc you can run them a little bit tighter, say minimum of .040 air gap IHTHs I was thinking one of the bearings on the main shaft, but I will look at the clutch gap first. Thanks
1969 340 4 Speed Swinger R4, black vinyl, white butt stripe, 3:91
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Re: 833 won't shift out of 2nd under high RPM
[Re: metallicareload]
#3125149
02/27/23 10:47 PM
02/27/23 10:47 PM
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Joined: Jan 2003
Posts: 15,842 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,842
Omaha Ne
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New transmission? How did the stop ring/synchronizer look for that gear? And then bellhousing runout and parallelism? Hopefully clutch adjustment, otherwise What he said ↑
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Re: 833 won't shift out of 2nd under high RPM
[Re: MO_PA]
#3128095
03/10/23 11:59 AM
03/10/23 11:59 AM
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Joined: Jan 2010
Posts: 679 Los Osos, Ca
CKessel
mopar
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mopar
Joined: Jan 2010
Posts: 679
Los Osos, Ca
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What oil are you using? When I ran synthetic in mine, would not shift over 4 unless I dropped the rpm. Was told that I needed to run the old 140wt oil as the synchro rings were designed for that. Took care of the problem. Later on I took it further by having it slick shifted.
Carl Kessel
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Re: 833 won't shift out of 2nd under high RPM
[Re: CKessel]
#3128108
03/10/23 12:17 PM
03/10/23 12:17 PM
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Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,282
A gulag near you.
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What oil are you using? When I ran synthetic in mine, would not shift over 4 unless I dropped the rpm. Was told that I needed to run the old 140wt oil as the synchro rings were designed for that. Took care of the problem. Later on I took it further by having it slick shifted. I was just reading thru my 69 shop manual and saw the recommended oil at 140 wt , I always ran 75-90w which they says to use in cold weather and auto trans for extreme cold , I'd never run auto trans though , I can tell the 4speeds that had auto trans by the amount of wear on the cluster pin and reverse gear shafts. To the op , what oil are you using ? you need something that is rated for brass , castrol syncomesh , if it's still available, or Passon has a oil he sells.
Mainstream Media is the new Pravda
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Re: 833 won't shift out of 2nd under high RPM
[Re: CKessel]
#3128109
03/10/23 12:23 PM
03/10/23 12:23 PM
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Joined: Jan 2003
Posts: 21,509 A collage of whims
topside
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 21,509
A collage of whims
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OP's issue sounds like a misalignment (maybe inside the trans) or clutch issue. Over the 33 years I had my Hemi (18-spline) car, I had different lube in the trans: the OEM stuff, 75/90, synthetic, ATF. Only difference among them for shifting was the lighter weights shifted a bit easier, especially cold. Powershifted that thing many times from 6,000 - 7,000 RPM; it was never stuck in the lower gear, though I could miss the next gear if I wasn't focused. No issues ever in normal driving. We did fuss over the crank/bell/input alignment.
My 23-splines are a bit easier to shift, though I don't beat on them. I have had 1 that a previous rebuilder screwed up a snap-ring or two. Initially hard to get Rev or 1st, IIRC, and quickly - like 2 miles - degenerated into horrible noises and reluctant to shift at all.
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Re: 833 won't shift out of 2nd under high RPM
[Re: 6T9Hemi]
#3128223
03/10/23 06:08 PM
03/10/23 06:08 PM
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Joined: Jan 2003
Posts: 4,807 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,807
Moved to N.E. Tennessee
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My 23 spline A body 833 won't shift out of 2nd gear under high RPM. Soon as the RPM drops to around 2500, it will shift like normal. This happens around 5000-5500. Any ideas. It's not the driveshaft. Won't shift out of 2nd or won't shift into 3rd? Make sure you have lube for BRASS synchro rings. Not synthetic and not rearend lube. Many of the lubes in the stores are for modern transmissions and are incompatible with the brass rings in 833s. The synchro ring has to be able to grab the cone on the gear. If the inside of the synchro ring is worn out it will not grab the cone no matter what lube is used.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: 833 won't shift out of 2nd under high RPM
[Re: 6T9Hemi]
#3138494
04/16/23 04:17 PM
04/16/23 04:17 PM
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Joined: Jun 2004
Posts: 936 Elizabethtown, KY
6T9Hemi
OP
super stock
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OP
super stock
Joined: Jun 2004
Posts: 936
Elizabethtown, KY
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Pulled the cover off the 4 speed and one of the shift struts is missing on 1-2 synchronizer. Guess that explains the no shift under high RPM. Pulled the tranny out and didn't see it in the bottom of the case by the magnet? ? ? The retainer springs for the struts were wobbly looking and bent.
Last edited by 6T9Hemi; 04/16/23 04:18 PM.
1969 340 4 Speed Swinger R4, black vinyl, white butt stripe, 3:91
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Re: 833 won't shift out of 2nd under high RPM
[Re: 6T9Hemi]
#3138498
04/16/23 04:20 PM
04/16/23 04:20 PM
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Joined: Jun 2004
Posts: 936 Elizabethtown, KY
6T9Hemi
OP
super stock
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OP
super stock
Joined: Jun 2004
Posts: 936
Elizabethtown, KY
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Are the shift struts soft enough to get ground up and not hurt the gears?
1969 340 4 Speed Swinger R4, black vinyl, white butt stripe, 3:91
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