Smo's04Gto

iTrader: (8)

Clearances ok or tight ? Na / possibly 200 hit. Melling HV/HP pump,7qt deep pan. 427 (sleeved LS3) spinning to 7200. Compstar crank rods/wiseco pistons/ total seal rings/ clevite bearings.


Mains .0018

Rods .002

Shirts .0045

end play .004

Rod side .020

1st.022 2nd.024 oil .028

KCS

iTrader: (20)

That's probably ok. The thrust and main clearances are a little tighter than what I would want, but I bet it would be fine.

pantera_efi

iTrader: (1)

Hi, I would fit King Race bearings, rod only.

Your rod bearing is too tight.

You will NOT allow oil flow @ .002", enough to cool the bearing.

The better size is a .003" rod bearing measurement.

Lance

Smo's04Gto

iTrader: (8)

What would you set them to? Those are ERL's numbers ! Everything I've read is .002 min on mains .0025 ideal. Rods .0025 I was amazes how much the oil follow changes going from .0018 to .0025. Now that the news is out I'm really concerned about getting a quality assembly from them.

KCS

iTrader: (20)

A good general rule of thumb for a performance application is .001" clearance for every 1" of journal diameter. The LS1 mains are about 2.5588" and the rods are about 2.0999". Since the block is aluminum, you want a little tighter main bearing clearance than what you would want in an iron block. I personally would like to see .0020-.0022" but I don't think .0018" would hurt as long as it's the tightest clearance. Rarely are the mains all exactly the same. If you think you might jet it up and hit it with a larger shot of nitrous, then I would really consider loosening it up.

The thrust is ok for a street car with a performance clutch or converter, but again, if you think you may end up with a little more aggressive setup, I would want more clearance, like .006-.007".

Smo's04Gto

iTrader: (8)

KCS/Pantera Thanks. I agree, we'll have it set a little looser. I was surprised that was their recommendations,knowing the usage.

Gray86hatch

iTrader: (83)

.002 on the mains

2.100. Rod .0025

Tim