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| GMC V6 and V12 Engines Engine repair and rebuilding |
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#1
March 6th, 2023, 10:34 PM
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V6 Exhaust Manifold Bolt French Locks
FYI
Looks like somebody on Ebay is making GMC V6 exhaust manifold bolt french locks I picked up a set haven't installed them but the do line up with my 305's exhaust bolts. Not Mine / No Affiliation https://www.ebay.com/itm/266124593331 Good luck 
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#3
March 7th, 2023, 06:46 PM
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Re: V6 Exhaust Manifold Bolt French Locks
They are pieces of metal which have tabs that fold over to prevent the exhaust bolts from loosening. Mine are long gone, I've seen them on other trucks and like the look.
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#4
March 8th, 2023, 06:14 PM
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Re: V6 Exhaust Manifold Bolt French Locks
Thanks. Didn't know they had a name.
I'll take a look if there are remnants on the side that has never been off.
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#5
March 8th, 2023, 07:22 PM
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Re: V6 Exhaust Manifold Bolt French Locks
Cool, most are buggered up or rusted through. They are good to have, as the manifold bolts are only tightened to 15-20 ft lbs.
Would be an easy part to laser cut from a piece of sheet metal.
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