Re: 4 speed input shaft measurement needed
[Re: roadrunninMark]
#2795648
07/11/20 11:18 PM
07/11/20 11:18 PM
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Joined: May 2006
Posts: 1,744 Phila
PhillyRag
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top fuel
Joined: May 2006
Posts: 1,744
Phila
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Thanks Philly, would you call that 8 3/4" or just a little shy of that?
Or is it the sticker says.. 8.66"? Opps: that sticker says 2:66 ratio gears. Camera shot was fairly straight on: so split the difference.
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Re: 4 speed input shaft measurement needed
[Re: Stanton]
#2795778
07/12/20 11:58 AM
07/12/20 11:58 AM
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Joined: Jan 2003
Posts: 5,435 So Cal
Sinitro
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master
Joined: Jan 2003
Posts: 5,435
So Cal
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Also make sure the crankshaft is drilled out for a manual transmission.. Just my $0.02...
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Re: 4 speed input shaft measurement needed
[Re: roadrunninMark]
#2796338
07/13/20 10:54 PM
07/13/20 10:54 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
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Joined: Mar 2011
Posts: 3,055
Michigan
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Hi Transman,
If I am figuring out your measurements, anything longer than 8.55" from the face of the transmission is "along for the ride". I am only getting about 8.25" on mine, meaning I am still a little short. I was informed that Passon Performance has extended a pilot bearing to make up the necessary distance in 833 four speeds, so I contacted them. I hope to hear back shortly. Sounds like this idea of extending the pilot bearing will work so I won't need another input shaft. at least not for now. I measured again - maybe this will help. From the front of the main case to the end of the bearing retainer is 4.275”. From the end of the bearing retainer to the rear portion of the wear pattern of the pilot bushing is 2.950”. From the end of the bearing retainer to the forward portion of the wear pattern 3.780”. I recall that some inputs were cut because the trans was used in a Chevy or Ford application. I don’t recall if they had to be cut for a Mopar application too, or maybe just for an auto trans crankshaft that wasn’t drilled for the bushing. Been too long, sufffer from CRS.
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Re: 4 speed input shaft measurement needed
[Re: roadrunninMark]
#2796488
07/14/20 12:13 PM
07/14/20 12:13 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
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Joined: Mar 2011
Posts: 3,055
Michigan
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Thanks Transman,
Can you do an overall measure, from face of transmission to end of input shaft? Also, can you measure from the beginning of the input shaft to the beginning of the splines? I was going to measure from the splines but mine is an 18 spline and it has a much different chamfer. From the front of the bearing retainer to the end of the input shaft is 4.330” on mine. Notice the wear pattern.
Last edited by Transman; 07/14/20 12:28 PM.
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Re: 4 speed input shaft measurement needed
[Re: A727Tflite]
#2796586
07/14/20 03:58 PM
07/14/20 03:58 PM
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Joined: Aug 2004
Posts: 2,085 New Mexico
JMCFAN
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Joined: Aug 2004
Posts: 2,085
New Mexico
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My roadrunner 4sp crank was toast...the machine shop found one but it needed to be drilled. Unfortunately they not drill deep enough....trans would not mate up. Rather then disassemble the motor and redrill.... we took about 1/2 off the shaft.
All good
68 Charger 383/ AT Green/Green VT 70 Roadrunner 383/4sp Purple/Black VT
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