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

Batwing bushing bolt torque spec?

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Old Jun 5, 2021 | 03:18 PM
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Default Batwing bushing bolt torque spec?

Anyone have the torque spec for the 2 batwing mount bolts? My 90 fsm omits the torque spec for those particular bolts.
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Old Jun 5, 2021 | 05:28 PM
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Originally Posted by RatRacer
Anyone have the torque spec for the 2 batwing mount bolts? My 90 fsm omits the torque spec for those particular bolts.
See 3D-19 or 3D-9 OR thereabouts most FSM. Seems that various years might offer up different values!! 120 N-m / 88 lb ft is some 135 N-m 100 lb ft for others -

Last edited by WVZR-1; Jun 5, 2021 at 05:28 PM.
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Old Jun 5, 2021 | 06:40 PM
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Originally Posted by WVZR-1
See 3D-19 or 3D-9 OR thereabouts most FSM. Seems that various years might offer up different values!! 120 N-m / 88 lb ft is some 135 N-m 100 lb ft for others -
The torque spec is nowhere to be found in my 1990 fsm, which was printed 1/90.
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Old Jun 5, 2021 | 09:38 PM
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Originally Posted by RatRacer
The torque spec is nowhere to be found in my 1990 fsm, which was printed 1/90.
4B-31 for '90 120 N-m 89 lb ft
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Old Jun 6, 2021 | 07:21 PM
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Originally Posted by WVZR-1
4B-31 for '90 120 N-m 89 lb ft
Ahh, there it is! Thanks!
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Old Jun 7, 2021 | 07:52 AM
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3 ugga duggas and yer all set.😅
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