ls3 oil clearence
#1
ls3 oil clearence
Hi I have a ls3/l92 that I am putting together and I am trying to get my rod and main bearing clearances in check. Anyways My rod bearings are all .002 but my mains are a bit weird, all main bearings are about .0019-.002 but number 3 main is like .001-.00125 so obviously I need to get number 3 main bearing fixed, What do you guys think about .002 on mains and rods, I want to make sure I have decent oil pressure as I am retaining vvt cam. I also do have the wider durabond cam bearings which I believe will hold more oil pressure as they have a wider surface area. Engine is going into my yukon denali and with cam I picked out should make 500-520hp easily, I plan to add a lsa supercharger in about a year.
Also if possible please post your clearances and oil pressure warm and cold.
Thanks
Richard
Also if possible please post your clearances and oil pressure warm and cold.
Thanks
Richard
#4
FormerVendor
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Rod Oil Flow
I would ASK the bearing brand, my guess is FM.
I "like" the main, AL block, @ .002" min, NOT THE THRUST (.0012") as this # 3 REQUIRES MORE oil flow than the other 1-5's .
The Rods, too tight for future SC use, try King Race Bearings.
Drilling the oil pan filter insert area will provide a great flow increase as will using a longer "truck" filter.
Good idea for a VVT motor's oil flow.
I would add "oil jets" to the rod big ends.
The VVT oil pump is "native" HV, should be OK.
I would fit an IwIs "single" timing Chain AND modify your VVT Idler with a stronger spring, that will break.
Lance
I "like" the main, AL block, @ .002" min, NOT THE THRUST (.0012") as this # 3 REQUIRES MORE oil flow than the other 1-5's .
The Rods, too tight for future SC use, try King Race Bearings.
Drilling the oil pan filter insert area will provide a great flow increase as will using a longer "truck" filter.
Good idea for a VVT motor's oil flow.
I would add "oil jets" to the rod big ends.
The VVT oil pump is "native" HV, should be OK.
I would fit an IwIs "single" timing Chain AND modify your VVT Idler with a stronger spring, that will break.
Lance