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3-4 syncro questions

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Old Nov 21, 2005 | 10:35 AM
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Default 3-4 syncro questions

OK I have built dozens of T-56 transmissions and every one has broken keys in the 3-4 syncro assembly and I replace the syncro with new OE parts and still have had a few come back broke. Is there anyone out there making a syncro key out of some stronger metal?
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Old Nov 21, 2005 | 10:39 AM
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They make billet keys for the 3/4 and 5/6 because of that same problem. I never use stock ones. You can get them for $95.00 per set.
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Old Nov 21, 2005 | 11:36 AM
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The broken struts ( or keys) are a resultant damage not a cause. The billet parts wont break as readily but they will still over extend and cause a stuck in gear issue.The problem is the over extending of the strut. This can be from worn blockers , worn fork pads , worn shift fork( at the rail hole) or a combination of all of these contributors. The 3/4 fork should always be replaced with an iron part and the blockers checked for adequate wear gap at any time the box is opened up.
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Old Nov 21, 2005 | 12:24 PM
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I install the iron 3-4 shift fork and use carbon fiber blocking ringsin all my units and the keys still broke in my 01 SS. I am just looking for an alternative to use from the stock parts.
LS1Joe, Do you sell these keys? Should I just call you?
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Old Nov 21, 2005 | 02:16 PM
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Yes I sell them. Just PM me or call me at 832-488-0533.

Thanks,
Joe
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