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#1
09-16-2025, 08:13 AM
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Exh Manifold Bolt Locking Tabs
How many locking tabs did the factory use - all 12 positions or just the front and back on each head or ?? Working on a 1968 F'bird 400 restoration.
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#2
09-16-2025, 11:50 AM
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From a previous thread on this subject...
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| The Following User Says Thank You to 64-3Deuces For This Useful Post: | ||
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#3
09-16-2025, 01:27 PM
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Perfect, thanks. I have that manual and missed that detail.
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#4
09-16-2025, 06:41 PM
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Are not the end holes a larger diameter as well ?.... My belief is larger holes for manifold expansion then locks to keep bolts tight from large holes and expansion cycles
__________________
........... The More You Follow The Herd The Less You Can Be In The Lead .......... |
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#5
09-18-2025, 07:59 AM
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Formulas - I secured the manifolds before seeing your note so too late to check the hole diameters for now. Next time manifolds are off the car I'll try to remember to report back...
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#6
09-18-2025, 09:21 AM
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I know the locking tabs where done away with by 75 and washers where exchanged.
This could have even had taken place back earlier as in when the low comp fully set in by 1971, but I have no definitive proof of that due to the circa of manual’s I have.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#7
09-18-2025, 10:07 AM
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Quote:
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#8
09-18-2025, 10:37 AM
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And the above is a darn good reason when running exh manifolds to use the factory steel gasket only and with a coat of antiseize on both its sides .
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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