Possum Boggs

iTrader: (19)

i have a 170k on mine about to do a heads cam,stall swap this week,and tips on what little things i should to to compinsate for the high miles to help it out

LS1121

iTrader: (17)

my car had I think around 285,000 miles when i did what is in my sig. Having said that i bought my car New and know ALL the History of the car. I now have around 308,000 and it is still running good. I would do a Compression test first to determine the condition of the rings. MY thought is if the rings are ok then the bearings are ok.

Possum Boggs

iTrader: (19)

wow thats alot of miles and still kickin hard,i'll post pics of the motor with the intake off its was so dirty,sludge dead bugs etc i couldnt believe it,but it still runs great to my surprise,i wish i had it since it was new that way i would know the history of it,im definatly upgrading the oil pump and trans cooler,it hold like 25lbs of oil pressure at its lowest

B.Eddy

Mine 5.3 Sierra has 295,000 and runs real strong in bone stock form. I bought it got it from a friend that changed the oil every 3000 and drove it easy. It probaly been driven harder the last month that Ive had it than in its entire life. It will break the tires loose @ 30. I am doing my research and plan on going with 2.5 5.3 heads and MS3 cam in the near future with the stock high milage bottom end. I agree with above (check compression). If the bottom end is getting weak any power adders will take a toll and you will hurt something sooner. Make sure you dont short cut on parts that need to be replace (ie. headbolts, GOOD gaskets, timing chain, possably oil pump, balance bolt). If your gonna do it do it right the first time. I know a guy that has 550,000 on a 6.0 truck and pulls a trailer with it 5 days a week and they drive it hard and its still running strong. Good luck

Possum Boggs

iTrader: (19)

whats a good replacement oil pump?

Sales1@Texas-speed

There are few different choices out there. I recommend looking into our ported LS6 oil pump. We have great success with these and have been using them for several years. We start with the LS6 pump and then port and shim it to give you a nice bump in flow and pressure.

Possum Boggs

iTrader: (19)

thanks for the info^ i need all the help i can get

Cody Strife

iTrader: (1)

My car has 110,000 miles, doesn't leak a drop and did 450 rwhp.

I honestly am a firm believer that life is in the quality of that engine oil and preventative maintenence.

wildcamaro

iTrader: (15)

I have 200k 2005 5.3 and the cylinder walls still has the factory cross hatch...the materials used in the sleeves is pretty resilent...I would think bearings would go or be bad before piston to wall clearance...

Mean87SS

iTrader: (21)

Dont skimp on the little things like lifters and rockers(trunion upgrade...)

Possum Boggs

iTrader: (19)

mine never smoked or used oil really to my surprise,will a better oil pump help with the oil pressure,or are the rings just worn that bad after 170k?

wildcamaro

iTrader: (15)

I just posted how good my rings and cylinder walls were still good at 200k miles...and yes a new oil pump will help, before my motor was pulled from original truck it had low oil pressure and during disassembly is when I found the oil pump machine surface was wiped out...so yes an oil pump is $50-100 of cheap insurance

Possum Boggs

iTrader: (19)

i'll post pics of my pistons to see what you think later,there jet black,i wish i knew if its the original motor,for all i know it could have more miles

JakeFusion

iTrader: (7)

I'm in the same boat. Putting together a head/cam package for a 143k mile motor.

Here's what I'd do:

-All new gaskets everywhere you touch
-New lifters (GM LS7 are cheap alternatives)
-Comp Cams Trunion upgrade to stock rockers
-Melling High Volume Oil Pump and Katech/IWIS C5-R Timing Chain (need a single row with Melling - they also have a high pressure pump which is more for forged engines)
-Look at your balancer - Powerbond is a good alternative or ATI if you have the cash
-New spark plugs and wires (might as well replace)
-New fuel injectors if you plan on making above 430rwhp as insurance (FIC offers a resizing of stock injector service; Ford SVO 30lbs are also a good low-cost alternative)
-I'd do ARP bolts where there is a GM TTY bolt (head bolts, crank bolt) just because you can reuse those down the line
-Of course new valvesprings and hardened pushrods for your cam

Possum Boggs

iTrader: (19)

im definalty changing the plugs and wires,not sure if i'll have the extra cash right off to get injectors,all the little things are adding up fast,bolts,gaskets,fluids etc,but hopefully its all worth it lol

JakeFusion

iTrader: (7)

Yep, it adds up fast. Might as well do it right, though.

massls1guy

iTrader: (9)

I did a mild heads/cam swap at at 110k. Just passed 220k recently. When I take things apart I tend to replace anything that could be called a 'wear item'.

LS1121

iTrader: (17)

yea yea yea ....old thread but I'm at 326,000 now .

john kilgore

l have a dry sump ls-3 525hp with 8 miles on it yes crashed.

98Camaro2s

Just got a 1998 Camaro SS. Has 218,000KMS on it. What are some things I should get checked out before I do heads, longtube headers, cam, and exhaust?