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Old 09-09-2018, 03:59 PM   #1
Patch
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Intermediate shaft

I have a hardened on the way, but have any of you ever seen a stock shaft fail with a HV oil pump? Damage...pictures?
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Old 09-09-2018, 04:23 PM   #2
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Re: Intermediate shaft

the plastic coupler tends to be the p.i.t.a .

aftermarket with steel sleeve and pined work good .
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Old 09-09-2018, 04:40 PM   #3
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Re: Intermediate shaft

That's what I have ordered. Almost didn't swap that out.....think that would have hosed me.
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Old 09-09-2018, 05:25 PM   #4
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Re: Intermediate shaft

few cents now cheeper than stack of hundo's later . . .
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85-k30lb the plow machine build .
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Old 09-09-2018, 05:55 PM   #5
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Re: Intermediate shaft

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Old 09-10-2018, 12:05 AM   #6
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Re: Intermediate shaft

common cents goes along way. you want plastic or metal
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Old 09-10-2018, 12:16 PM   #7
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Re: Intermediate shaft

Common sense? My question had nothing to do with the collar originally. I was asking about the rod material strength, stock over the replacement and if anyone had any experience with a failure on one.
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Old 09-10-2018, 05:12 PM   #8
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Re: Intermediate shaft

oh sounds like you got offended, sorry I didnt mean to go down that path. I think you got your answer as far as a hardened shaft and not to use plastic.

I guess I was really bored and replied to such thread that already seemed to be a dead horse.
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Old 09-10-2018, 08:42 PM   #9
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Re: Intermediate shaft

No Sir.....not at all. Was just clarifying.....no worries!
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Old 09-11-2018, 10:54 AM   #10
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Re: Intermediate shaft

In all the SBC's I have torn apart in the last 35 years, I have never seen an oil pump shaft failure. I've had the plastic collar in pieces in the bottom of the oil pan, but the shaft has never failed. I've reused many of them (with new collar) without issue.

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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Old 09-11-2018, 11:15 AM   #11
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Re: Intermediate shaft

Thank's Gary! Mine was burred up a little on the outer ears, but nothing major. Without that collar on there, I do see it flexing quite a bit. Just curious if anyone has ever seen a catastrophic failure on these.
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Old 09-11-2018, 02:10 PM   #12
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Re: Intermediate shaft

I never have, but I'm sure some have failed at some point. I spin my 355 up around 7,000 RPM's once in awhile and it still has the original pump shaft in it from 1972.

I see you're in Oak Harbor... so am I.

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

Quote:
Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
Quote:
Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
Quote:
Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
Quote:
Originally Posted by cableguy0 View Post
Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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Old 09-11-2018, 11:28 PM   #13
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Re: Intermediate shaft

I have seen a failed stock oil pump shaft in a big block with a HV oil pump. It supposedly happened during the winter when revving the engine while it was cold.
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