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Author Topic: Flywheel date for a 67 l78  (Read 700 times)
67ssrsl78conv
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« on: February 18, 2012, 08:43:37 PM »

How far was a flywheel date off the engine build date?  The motor is a 67 mid may l78.   Thanks. Jeff
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JohnZ
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« Reply #1 on: February 19, 2012, 10:29:51 AM »

How far was a flywheel date off the engine build date?  The motor is a 67 mid may l78.   Thanks. Jeff

The casting date on the flywheel should be at least a few days prior to the stamped assembly date on the block pad.
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'69 Z/28
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67ssrsl78conv
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« Reply #2 on: February 19, 2012, 11:00:32 AM »

John, would 25 days be too far off?
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JohnZ
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« Reply #3 on: February 20, 2012, 10:21:42 AM »

John, would 25 days be too far off?

Nope, that would work fine.
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'69 Z/28
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« Reply #4 on: February 20, 2012, 10:34:56 AM »

Thanks. John.    I have had my original l78 on an engine stand for 33 years and was looking for a date correct flywheel for many years.  Do you know where I might find a correct  vacuum fitting for the manifold and did the 67 l78 use the 11/32 hose right to the fitting or was there a vacuum tube in between?  Thanks. Jeff
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JohnZ
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« Reply #5 on: February 21, 2012, 10:28:10 AM »

Thanks. John.    I have had my original l78 on an engine stand for 33 years and was looking for a date correct flywheel for many years.  Do you know where I might find a correct  vacuum fitting for the manifold and did the 67 l78 use the 11/32 hose right to the fitting or was there a vacuum tube in between?  Thanks. Jeff

The vacuum fittings are very common, and all of the vendors have them; the fitting and hose arrangement for power brakes is shown in the J50 section of the Assembly Manual.
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'69 Z/28
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