C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Trans Question

Old Nov 25, 2009 | 07:34 AM
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Last edited by Pete K; Jun 12, 2011 at 10:56 AM.
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Old Nov 25, 2009 | 07:55 AM
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Not me personally but I have heard of input shaft and drum failures from the the local trans guy.
BTW, your pm box is full ....lol
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Old Nov 25, 2009 | 10:48 AM
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Some guys on LS1tech have broken input shafts. I dont know about drums though.
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Old Nov 25, 2009 | 06:43 PM
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I grenaded a input drum. 700R4 I should start a list of what I haven't broke.
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Old Nov 26, 2009 | 08:42 AM
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Yes, But since going with Sepanek, and back to the TCI valvebody it seems much better. To bad I broke a halfshaft so I couldn't run it in the good fall air.
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Old Feb 4, 2010 | 07:17 PM
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I have just rebuilt my 4L60e and among the problems we found was an input drum with spider cracks PLUS. In other words, the drum hadn't yet become a grenade but could at any moment.

At this rebuild the tranny had 160k. Previous rebuilders' marks on the case lead us to believe it had a full rebuild at ~80k and then a TransGo shift kit at ~100k.

Our guess is the drum was in trouble before the shift kit was installed but that since the shift kit was probably installed without pulling the tranny (and checking the drum), the then owner probably pushed the tranny causing the ultimate failure (although it did last for another 60k!)

John
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Old Feb 5, 2010 | 04:17 AM
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I have splined the converter !!Never broke the shaft.725 hp at the motor.10.50 MT 28 inch slicks on the rear!!700r4 reverse manuel.

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Old Feb 5, 2010 | 04:25 AM
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4l60E bone stock
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Old Feb 5, 2010 | 07:37 AM
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Broke a expermintal billet input shaft in my 4L60e. Put the stock on back in it and so far it's holding but I suspect when I bolt the blower on the LSX440 it will brake something

I also broke the stock input shaft in a 200R4 with a blown 541 in front of it. replaced it with a billet one and it seams to be working fine. But the stock one lasted 4 years
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