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GMC V6 and V12 Engines Engine repair and rebuilding

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  #1  
Old January 31st, 2020, 10:09 PM
username username is offline
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Default valve lifters mixed up

Long time reader, first time writer here. So I just got my 351E from the shop. Valve job, machined, new bearings, all pretty and ready of assembly. Problem is they gave me the solid valve lifters in bag unmarked. Engine had 54,000 miles on it. Question is am I resigned to getting new lifters or is the cam heavy duty enough to adapt to lifters being placed in different locations?
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  #2  
Old February 1st, 2020, 03:06 AM
tbucketnut tbucketnut is offline
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Default Re: valve lifters mixed up

If they reground the cam and refaced the lifters you are golden otherwise all bets are off, IMHO.
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1953 Chevrolet 3100
261 cu inch, SM420
Finished Cab off restoration

1964 GMC 1000
305 V6, SM 420
Restoration is now started, still looking for an oldsmobile style power steering pump
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Old February 1st, 2020, 03:09 AM
jagarra jagarra is offline
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Default Re: valve lifters mixed up

I checked in my factory GMC service manual and even in the disassembly of the motor no mention is made to keep the lifters in any order. There was no special mention of anything about lifters in the assembly section either, just a hazard caution if a sodium filled valve was broken.
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Old February 1st, 2020, 07:24 AM
username username is offline
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Default Re: valve lifters mixed up

thanks, guys. As usual, better safe than sorry.
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  #5  
Old February 1st, 2020, 11:27 AM
James James is offline
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Default Re: valve lifters mixed up

Quote:
Originally Posted by username View Post
Long time reader, first time writer here. So I just got my 351E from the shop. Valve job, machined, new bearings, all pretty and ready of assembly. Problem is they gave me the solid valve lifters in bag unmarked. Engine had 54,000 miles on it. Question is am I resigned to getting new lifters or is the cam heavy duty enough to adapt to lifters being placed in different locations?
It been my experience if the lifters were not mark to their location and you put them back in the block it will eat the cam and lifter. To prove my point look at the face of the lifter. You will see different wear pattern. Putting a mismatched lifter with a cam lobe will generate metal then you will be back tearing down the engine again.

I recommend getting new lifters and letting Egge reground the old ones. https://egge.com/
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Old February 1st, 2020, 01:39 PM
tbucketnut tbucketnut is offline
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Default Re: valve lifters mixed up

I agree, even to the point of having the cam cleaned up as well.
I have used Delta Cam in Tacoma Wa. http://www.deltacam.com/ for forty years and recently had a solid lifter Chev. 261 cam reground and lifters resurfaced, it was cheap.

Steve
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Steve Stock
Gig Harbor, Wa

1953 Chevrolet 3100
261 cu inch, SM420
Finished Cab off restoration

1964 GMC 1000
305 V6, SM 420
Restoration is now started, still looking for an oldsmobile style power steering pump
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