How do I make the holes on the Lifter Tray
03-26-2008, 03:12 PM
#2
Theyre on the side flat spot. Picture how the tray sits in the block, and where the oil would pool up. Drill the hole where it would help the oil drain. Personally I decided not to drill them. I dont plan on extended bouts of ultra high rpms or extended high G forces. Id rather have all the rigidity I can get in controlling those lifters should I ever get any valve float.
03-26-2008, 06:17 PM
#4
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I'm with GuitsBoy, I did not do it when I did the heads. There is a lot of talk on weather or not that is a good thing to do.
As far as the hole, 3/8" and on the side of the lifter tray. Put a block of wood between the tray so you do not break it and make sure you clean it out well.
As far as the hole, 3/8" and on the side of the lifter tray. Put a block of wood between the tray so you do not break it and make sure you clean it out well.
03-26-2008, 06:23 PM
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I didn't do it when I swapped my heads either. too many variables if you ask me. Im not running the motor at 6300 rpm for 20 minutes at a time. And i think I will live if i lose a few HP by keep some oil on the lifters...
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03-26-2008, 07:13 PM
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dont you think gm would have done this if it were necessary? the trays are only going to hold so much oil. if its that big of a deal why not just add more oil to the motor? There must be a reason they didnt put holes in them? maybe to protect the lifters?
03-26-2008, 11:46 PM
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your right about improvements. But is modifying something like this really an improvement? Gm is pretty good about fixing problems. Like the early oil pump problems and the ls1 pcv system.... I think its just a fix to a problem that really doesnt exist? But hey if it makes someone feel better by all means do it!
gm spent millions of dollars on the research and development of these engines. I dont think leaving the holes out was a mistake
gm spent millions of dollars on the research and development of these engines. I dont think leaving the holes out was a mistake
03-27-2008, 12:04 AM
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your right about improvements. But is modifying something like this really an improvement? Gm is pretty good about fixing problems. Like the early oil pump problems and the ls1 pcv system.... I think its just a fix to a problem that really doesnt exist? But hey if it makes someone feel better by all means do it!
gm spent millions of dollars on the research and development of these engines. I dont think leaving the holes out was a mistake
gm spent millions of dollars on the research and development of these engines. I dont think leaving the holes out was a mistake
03-27-2008, 01:43 PM
#17
your right about improvements. But is modifying something like this really an improvement? Gm is pretty good about fixing problems. Like the early oil pump problems and the ls1 pcv system.... I think its just a fix to a problem that really doesnt exist? But hey if it makes someone feel better by all means do it!
gm spent millions of dollars on the research and development of these engines. I dont think leaving the holes out was a mistake
gm spent millions of dollars on the research and development of these engines. I dont think leaving the holes out was a mistake
With the fact that this modification is only advantageous in racing and extended high rpm situations, it's no surprise these holes are not there from the factory.
