chevroletfreak

iTrader: (6)

So, I had a 427 L92 built by Eric Koenig about 8 years ago....due to overseas moves and multiple other excuses this beast has not even been turned over.

I finally got motivation from my son to get the car going for LS Fest. Made a nice long list of things to do and then pulled the valve covers. It has been sealed up, but from setting so long the rocker assembly lube is obviously gummed up. There is some big money in this motor and I am not experienced with engine tear down and assembly. What action would you recommend?

Higgs Boson

iTrader: (3)

sell it

2xLS1

iTrader: (25)

Take it to Henson Racing Engines in W OKC/Yukon and have him freshen it up.

KCS

iTrader: (20)

What color is the assembly lube? Some of them are kind of gummy when fresh.

RixTrix

Prime the oil system and run it.

Darth_V8r

iTrader: (4)

to me!

mOtOrHeAd MiKe

iTrader: (8)

Check the valve springs, replace as necessary. Maybe update the cam to something more modern. Prime it and run it.

It is an engine, they just want to run.

99 Black Bird T/A

iTrader: (4)

My new LS1 383 stroker thats now in my 91 had to sit from 2009 until 2015 due divorce, two moves due to work and another car project. Last year the LS1 383 was installed in my RS and it runs perfectly. Rings sealed exactly as they should. Only issue water pump leaked and I think what water pump would have had the same issue in 2009. My LS1 383 was sealed with tape on the exbaust ports and TB so nothing was exposed.

I would prime the motor and run it through break as normal.
Or sell it to me and I can have it installed in my 99 TA and do that.

LLave

iTrader: (3)

If it were me, I would prime it and run it. But that's me, and occasionally I do stupid things.

codyvette

iTrader: (24)

I would at a minimum, have the springs replaced. Remember, at least some of them have been sitting compressed. I would also pull the oil pump and drench it good in some royal purple assembly oil. A dry pump in these motors can be a mother to get to pick up prime without an actual start.

RockinWs6

After setting for 8 years I would have someone knowledgeable look at it. If it was sealed up good it should in good condition. I would at least pull the heads, replace the lifters inspect the valves and replace the valve springs. I'd also pull the pan inspect everything, replace the oil pump and oring. 8 Years is a way long time for parts to stick together. Bet the crank seals and valve seals are nasty. If a valve sticks you'll have a mess.

FMonster

iTrader: (2)

Depends on how you stored it. Even a sealed motor can form condensation on the inside if it's stored in a location that sees temp/humidity swings. If the oil level was low or it was assembled improperly and bearings didn't get a good coating of lube you could have rust form and that's going to be bad at first startup.
No sense in trashing brand new bearings/pumps. Crack it open and look. If your not comfortable doing it then pay a machine shop to do it. The cost/ peace of mind will be worth it. Definitely replace the valve springs and seals as stated in previous posts they will have been under pressure for these past years and it's cheap insurance to do it.

99 Black Bird T/A

iTrader: (4)

It's safest to do as mentioned above. I agree you will have more peace of mind if a high quality shop checks the motor and does what's mentioned. Humidity & temperature changes are bad news for sure. If exposed to those conditions the risk goes up.

With that said sitting for for a long time, the valve springs wouldn't have been under full pressure if the motor has hydraulic lifters because they would leak down. Valve spring are disposable so replacing them is really just normal maintenance for many hp engines.

TA63

iTrader: (5)

Makes no difference if the springs have been sitting compressed. Cycles are what matter, not time under tension.

codyvette

iTrader: (24)

Has this been tested on springs for an eight year period. Springs are cheap.