4 speed trans help: Determining condition? w/pics
#1324067
10/21/12 08:12 PM
10/21/12 08:12 PM
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autoxcuda
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Just got my hands on a bare A-body 4 speed. It appears pretty good. Just wondering if someone can give there expert opinion on gear, syncro, and shift fork conditon. Also I'm trying to determin the trans ratio. The trans codes/dates: 4B2545 = 1974 Hamtramck PPA8334557 = A883 built on Friday, January 18, 1974 Please click attachment to see gears and syncro ring teeth shape
Last edited by autoxcuda; 10/21/12 10:58 PM.
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Re: 4 speed trans: Condition and determining gearsets?
[Re: autoxcuda]
#1324068
10/21/12 08:16 PM
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Headhunter22
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For information on ratios, ..etc I would nose around Brewers website. He's a sponser here and also has some really good information on his website. For ratios, I think this would answer your questions hopefully. On the parts, I'm sure others with more experience will chime in. Good luck. web page Steve
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Re: 4 speed trans: Condition and determining gearsets?
[Re: Headhunter22]
#1324069
10/21/12 08:31 PM
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Re: 4 speed trans: Condition and determining gearsets?
[Re: autoxcuda]
#1324071
10/21/12 08:59 PM
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fourgearsavoy
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The clutching teeth on second and third look pretty beat-up to me.All you really need to do is count the drive teeth on the cluster and post what you can count.If you let us know the tooth counts we can tell you what ratio you have. 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: 4 speed trans: Condition and determining gearsets?
[Re: fourgearsavoy]
#1324072
10/21/12 09:17 PM
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autoxcuda
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Quote:
The clutching teeth on second and third look pretty beat-up to me.All you really need to do is count the drive teeth on the cluster and post what you can count.If you let us know the tooth counts we can tell you what ratio you have. Gus
Will do . . . With illustration
Tooth counts:
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Re: 4 speed trans: Condition and determining gearsets?
[Re: fourgearsavoy]
#1324073
10/21/12 09:35 PM
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dulcich
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Quote:
The clutching teeth on second and third look pretty beat-up to me.All you really need to do is count the drive teeth on the cluster and post what you can count.If you let us know the tooth counts we can tell you what ratio you have. Gus
It looks to be in good condition to me.
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Re: 4 speed trans: Condition and determining gearsets?
[Re: autoxcuda]
#1324075
10/21/12 09:47 PM
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Ok, I was looking at the Mopar Performance Chassis manual page 119 figure 6-13. I've looked at it about 5-6 times since last night and I think I finally figured it out. Note: It would have been a lot easier if MP would have just put a line between the main and cluster teeth counts to signify divided by. You no, since that is how they do it in mathematics. MP must have been trying to save ink. 1st gear ratio= (35/17) x (30/25) = 2.47 2nd gear ratio= (34/23) x (30/25) = 1.77 3rdd gear ratio= (29/26) x (30/25) = 1.39 . . . . Am I correct on this? Do I get a happy face sticker?!
Last edited by autoxcuda; 10/27/12 12:19 AM.
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Re: 4 speed trans: Condition and determining gearsets?
[Re: dulcich]
#1324076
10/21/12 09:54 PM
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Re: 4 speed trans: Condition and determining gearsets?
[Re: autoxcuda]
#1324082
10/22/12 12:04 AM
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autoxcuda
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Other side with different angle
click attachement to magnify
Last edited by autoxcuda; 10/22/12 12:05 AM.
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Re: 4 speed trans: Condition and determining gearsets?
[Re: autoxcuda]
#1324083
10/22/12 12:08 AM
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Re: 4 speed trans: Condition and determining gearsets?
[Re: dulcich]
#1324086
10/22/12 01:13 PM
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autoxcuda
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Quote:
I think Gus might have been right all along. It's hard to tell from those shots but if the dog teeth on the gears are rounded off and worn, you are going to need new gears. -dulcich
I'm trying to work up a good picture. Would be nice to know just how pointed they are supposed to look. I can't find a good picture of even a new one to reference to.
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