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

Torque specs for runners

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Old Nov 2, 2001 | 05:21 PM
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NUckINg FuTS's Avatar
NUckINg FuTS
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Default Torque specs for runners

Does anyone know the torque specs for the bolts that connect the intake tube runners to the intake manifold and also to the plenum?
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Old Nov 2, 2001 | 06:41 PM
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From: Drive it Like You Hate it Cincinnati OH
Default Re: Torque specs for runners (NUckINg FuTS)

I'm pretty sure it's 20 ft-lbs, But let's wait for a second opinion...
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Old Nov 2, 2001 | 07:27 PM
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From: Sacramento, CA Money can't buy happiness - but it's more comfortable to cry in a Corvette than a Yugo.
Default Re: Torque specs for runners (FoolCrzy)

According to the 88 & 89 GM Factory Manuals it is 19ftlb or 25 ftlb, depending on where you look in the manual. Personal experience with a vette (not my own fortunately) has proven to me that the 25ftlb is too much. It will strip out the aluminum threads. When I replaced my injectors in early July on my 88 I used a torque wrench and set it to 19ftlb. No problem so far and no stripped threads.
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Old Nov 2, 2001 | 07:32 PM
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Default Re: Torque specs for runners (Mike_88Z51)

...and that would be our second opinion.
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