Lee12609

iTrader: (3)

160k on my LS1

249k on my 2000 silverado 4.8

both have never been cracked open.

mjs1012

iTrader: (36)

That's the thing, once people start opening them up there are many things that can go wrong and hurt the life of the engine if done wrong.

JWStevens

iTrader: (1)

I forgot I've got 100 shot wet kit on it too, but I don't shoot it much because my tires are gone. No tranny rebuild, I have all maint records.

JUSTINSWS6

You will be able to tell when it needs rebuilt

caturnbull1

iTrader: (2)

I rebuilt my trans then finished the rebuild a year latet lol. Rear just blew so upgraded to a strange 12 bolt its been a long 220k

BLK95-Z

iTrader: (2)

I just bought a complete 4.8 out of my buddys truck with 270k miles. It didnt smoke knock use oil anything still ran perfect, he swapped in a 6.0 or it would still be in there.

Im getting ready to h/c/i my 98 with 108k.

SSickLS1SS

it is really good to see all these guys with such high mileage engines and still driving them hard, it really goes to show how well made they are

JWStevens

iTrader: (1)

Mine, is on its last leg, motor AND trans. My tahoe has 175K on it and still runs good and my 5.3 S-10 runs way harder than my 350 S-10 did. If I don't wait 30 minutes or so my 60' will fall off (about a tenth) so I think the trans is hurt for sure. I can't be more satisfied with it though. You just can't expect more IMO.

azzkker

iTrader: (4)

170,000 plus on mine and it still runs like a top. The rear diff is on its way out, but my mwc 9" will fix that. I am pulling the motor for a stroker soon, but plan to put this motor in another project, so it will live on!

Decadence75

iTrader: (17)

133.5K and pulling strong enough to make me giggle when I put the foot down

jrob56

iTrader: (39)

Funny I find this thread, after a 150k mile ls1 hydrolocked a buddy and I have been trying to find a replacement. We put in an ls1 and got rod knock bad bearing, we bought an lq4 and found a bent rod. So after that much bad luck with all the ones we bought, we turned to the 200k mile ls1 pull out sitting in the garage that ran good from a parts car. So we will have it in and running by Sat. So not only has it lasted 10 years and 200k miles, we actually swapping it into a car haha.

Bottom end looked good, checked under the valve covers and all was well. Turned over by hand with plugs out and just a lil effort. Everything was a little dark from the miles, but looked great.

LS1WS6dreamer

iTrader: (1)

165,xxx on mine and still going strong. I want to cam it, but I know I shouldn't with the mileage. Might swap in a 6.0 then do it. Decisions, decisions...

mjs1012

iTrader: (36)

go for it. just put a new oil pump/chain/lifters in and get a good tune. if the motor were to let go down the line you can reuse all the stuff you put into it.

sabersaw30

iTrader: (10)

My dad has a 5.3 truck never changed spark plugs on and has 260k miles.

87caprice318

iTrader: (1)

Man those miles are nothing...lol..isnt a T/A or camaro but on my old 98 suburban 398k from BRAND NEW in 98 and never popped a valve cover on the engine...but the trans has been changed twice...man we couldnt kill that engine for nothing..Just pulled the engine/trans out and put in shed...JUNKED THE TRUCK..

1badhoss

iTrader: (1)

172k and still pulling strong

Blasko

iTrader: (3)

All of them so far..

phantoms

iTrader: (1)

230k 95 lt1 here. still runs great doesnt smoke, leak, consume oil. gets 20mpg average mix highway city. it was retired about 700 miles ago from daily driver duty. but everytime i take it out for fun it always surprises me. and everyone else.

hooker long tubes, ory, ram air hood coversion, alum ds, lca, panhard bar, tq arm relocation kit, air foil, tb bypass, tune, stb, sfc probably something else im forgetting.

CJDZ24_Z28

iTrader: (75)

231k on my old 99 Z28. 199k on my 98 Z28. All other 18 LS1 cars I have had have ranged from 0 miles up to 231k. Most ranging over 140k-160k

88blackiroc

iTrader: (3)

My speedo reads almost 190k. Put on a zex wet kit 5k ago and shes still hanging in there. Only sprayed a couple times though.
Oh and i dd it to so it sees quite a few highway pulls to and from work.
Soon after i get another dd i wanna build a 6.0 for the car.