Lifter replacement necessary?
Lifter replacement necessary? I'm getting ready to get the 5.3 ready for my C/10. Going to have the heads cut and stick a cam in it.
Motor has about 80k on it, is it necessary to change the lifters?
I never have replaced them in the past but I'm seeing lots of folks talking about swapping in LS7 lifters/trays.
This is an on the cheap project, if I don't have to spend the $ I don't want to. But, I don't want to be tearing it back apart either.
Motor has about 80k on it, is it necessary to change the lifters?
I never have replaced them in the past but I'm seeing lots of folks talking about swapping in LS7 lifters/trays.
This is an on the cheap project, if I don't have to spend the $ I don't want to. But, I don't want to be tearing it back apart either.
You would be stupid to not replace them all now for $135 rather than $2135 later when that lifter shots, drops a valve, eats a piston and finally the rod through the block.
All gm lifters now are ls7. Plain ol ls2 trays are fine
All gm lifters now are ls7. Plain ol ls2 trays are fine
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take the lifters apart and clean them well and re-stretch the springs a little and while putting Them back together put a cpl drops of new clean motor oil inside and test each 1 for plunger movement and for the bottom check ball/valve operation and You'll be good to go ,,,,,,,,,,,proper amount of oil which They take care of Themselves and valve operation is business end and of course the roller not having any significant knicks or grooves and the needles working smoothly . That's just My opinion though .
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New lifters can fail just as easily as used ones. However, I would replace them because they are high mileage and you have the heads off anyways.
But I don't feel it's a MUST. But rather preferred.
But I don't feel it's a MUST. But rather preferred.
Now granted I am coming at this from the LT1 side of things but I see more guys have the mythical upgrade LS7 lifters fail than reused originals. $135 is cheap if the originals were atall suspect or had any record of failure or if the replacement was bulletproof, and just how many of those criteria are met?
I rebuilt my bottom end of my ls1 and didn't replace lifters and trays....but all new gaskets all around.
I only didn't replace them, cause I didn't have the money. (My other car had just been rebuilt and ate up my budget)
I have about 150k on this stock top end.
I only didn't replace them, cause I didn't have the money. (My other car had just been rebuilt and ate up my budget)
I have about 150k on this stock top end.
I found a set of barely used LS7 lifters for cheap so picked them up.
Cam is an old Comp 228/230, .581/.583. Nothing too hairy.
Cam is an old Comp 228/230, .581/.583. Nothing too hairy.
Last edited by 02SOMSS; Jan 18, 2013 at 01:08 PM.
