Lifter Tray Help
Thread Starter
Teching In
Joined: Jun 2005
Posts: 9
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From: Royal Oak MI / Garnerville NY
Lifter Tray Help Need a little help.
I have a gen III LS that I rebuilt and bought 4 new lifter trays GM PN12571596 the issue I am having is the new tray grabs the lifter tight on one side and the other is loose. In comparison to the old units I can load all four lifters into the tray and it holds them tight enough that I can pick it up without them falling out. On the new ones 2 would stay and 2 would drop .... this is the same for all 4 trays.
Did I get a bad batch ? the design of the new tray is slightly different then that of the old and I know there is a difference between Gen III and IV but I thought Gen IV parts work fine in the Gen III.
Thanks in advance
Vince
I have a gen III LS that I rebuilt and bought 4 new lifter trays GM PN12571596 the issue I am having is the new tray grabs the lifter tight on one side and the other is loose. In comparison to the old units I can load all four lifters into the tray and it holds them tight enough that I can pick it up without them falling out. On the new ones 2 would stay and 2 would drop .... this is the same for all 4 trays.
Did I get a bad batch ? the design of the new tray is slightly different then that of the old and I know there is a difference between Gen III and IV but I thought Gen IV parts work fine in the Gen III.
Thanks in advance
Vince
Thread Starter
Teching In
Joined: Jun 2005
Posts: 9
Likes: 0
From: Royal Oak MI / Garnerville NY
Yes Darkman you are correct, I forgot to mention I was running L92 heads. In any case I think the lifters should always be tight in the tray.
Does anyone know if the L92 heads have different size lifter bodies or larger openings in the trays ?
Does anyone know if the L92 heads have different size lifter bodies or larger openings in the trays ?
Summit Racing shows both L92 lifters (17122490) and LS7 lifters (12499225) with the same 0.842 inch diameter.
Any chance the trays are not quite symmetrical and you have them in "upside down"?
Any chance the trays are not quite symmetrical and you have them in "upside down"?
Thread Starter
Teching In
Joined: Jun 2005
Posts: 9
Likes: 0
From: Royal Oak MI / Garnerville NY
Ok so I took another look and I have 2 12571596 and 2 12571608 both look the same but basically mirrors of the other. Below is a pic of old vs new and you will notice two of the holes on one side of the new tray are larger then the other 2. The old tray all four are the same. My lifters fit in the smaller holes but not the other.
Guess I dont have pic posting rights on my account
Guess I dont have pic posting rights on my account
Last edited by censo69; Feb 10, 2012 at 10:42 PM.
