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Elite Veteran
Posts: 977
Location: Sydney, Australia | 1967 383 4 barrel intake.
I'm going to replace the valley pan gasket and was wondering if anyone knew the correct tightening sequence for the bolts?
Also does 40ft-lb sound correct for the bolts and 9ft-lb for the valley pan rail bolts?
First time doing this so does anyone have any tips I may need?
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Elite Veteran
Posts: 888
Location: Peoples Republic of Oregon | Bolt tightening patterns usually start in the center and radiate outward or, in the case of a B-RB, start at the center and zig-zag toward the ends.
Yes, 40lb-ft is correct for a 3/8" bolt.
Tip: use a soft setting sealer, I like Permatex, on the ends of the block especially at the corners. If you must use an rtv then use it very carefully...you
don't want that crap finding its way to the oil pump. Do not use rtv as a thread sealant. |
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Elite Veteran
Posts: 977
Location: Sydney, Australia | Thanks for the info.
Sorry I forgot about the bolts. Should I use a thread sealer or a thread locker?
Edited by matte 2018-06-07 5:07 PM
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Expert 5K+
Posts: 8443
Location: Perth Australia | Use pipe sealant, not thread locker
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Elite Veteran
Posts: 977
Location: Sydney, Australia | ttotired - 2018-06-07 6:12 PM
Use pipe sealant, not thread locker
Will do..
Cheers for that. |
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Elite Veteran
Posts: 888
Location: Peoples Republic of Oregon | Use thread sealant sparingly, especially when dealing with a blind hole.
In a blind hole excess sealant/dope can build-up ahead of the bolt and either stop the bolt short or actually break the casting in some situations. |
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Expert
Posts: 3777
Location: NorCal | BB intake bolt holes aren't blind, they go through to the interior of the head and oil can wick up the threads, that's why some use sealer. |
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Expert 5K+
Posts: 9904
Location: Lower Mainland BC | matte - 2018-06-07 5:01 AM
1967 383 4 barrel intake.
Similar to this (318/360)?
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Expert
Posts: 3034
Location: N.W. Fla. | yes, basically. Brings it down evenly. |
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Elite Veteran
Posts: 977
Location: Sydney, Australia | Great, thanks all for the input.. I always get a little put off or nervous when doing gaskets or the sealing of something.
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