90'SSBC

Hey guys.

New to this forum just sold my 5.0 Foxbody for a 94 Z. How much abuse can an LT1 take with 152k miles on her? Bone stock and I have a heavy foot on a daily basis. Been hitting the rev-limiter a few times so far. Not too crazy just when I feel like I need a rush. Changed all the fluids and It has a new acdelco radiator just installed.

turtle93

I run a 100 shot down mine and hammer the **** out of it weekly 156,000 miles and still going strong lol

LT1

iTrader: (1)

It'll keep taking abuse, just as long as you keep up the maintenance and oil changes.

BTW, welcome to the forum. I have a 89 foxbody (notchback) 5.0L fun car to drive.

SS RRR

iTrader: (2)

As long as you don't mess with the rev limiter with the springs that are on there and change the oil faithfully you'll be fine.

93M6Formula

I've had my car for 4.5 years and 25K miles. (Its at 112K now) I have been pretty hard on the old girl, not trashing it but I race A LOT and I'm just a fast driver and the car has taken it well. The rearend is the weakest point on these cars but the rest if properly maintained can take it just fine.

z_speedfreak

iTrader: (3)

I put 50k HARD HARD miles on mine, only hiccup was a couple blown synchros but I bought it with those problems already well on their way from the previous owner. my rear is on its way out but thats only because I drove for 5hrs straight going triple digits

90'SSBC

Yeah mine has a wine to it. Does that mean its going out?

BSmiff

Only two times Ive heard a whine from a rear was one that died the next week and one that had gears installed and shimmed too tight.

tbag_skywalker

I beat the **** out of my car almost daily, though I do keep up on fluid changes.

Had to have my tranny rebuilt and ran through 3 ring & pinions in 6 years.

130K and the motor still runs very strong somehow.

davorocks

these cars are built well to handle daily abuse, while stock. start making big power and you will be finding the weakest link. GM built these cars very well to handle their power.

SS RRR

iTrader: (2)

I wouldn't go so far as to say they are built to handle the power. They were built on an already dated platform from the parts bin. I mean back in the day they were alright for what they cost, but not so much anymore. I would have easily paid a few thousand more if GM would have designed, outsourced, installed a stronger differential instead of the pathetically weak S-10 diff they received from the factory. The one component that I really salute to handle big power is the Borg Warner T-56. Best factory offered transmission ever.

z_speedfreak

iTrader: (3)

yep. my posi only works while going straight ever since that road trip.

SS RRR

iTrader: (2)

Depends on what kind of noise it is. If it's an actual whine then the gears are probably a bit out of whack, but nothing to be too concerned about unless it is very loud and/or a grind type of noise. The other kind of noise could be a howl which could mean the bearings are frozen and spinning in the races which can lead to catastrophic failure.

90'SSBC

Arent there rear end fluid coolers? coming from a ford I hear the GM rear ends are compared to my previous 8.8

RamAir95TA

iTrader: (2)

Most racers actually prefer the oil to be hot since it flows easier reducing drag on the ring gear. And usually in everyday driving conditions the differential fluid doesn't get hot enough to cause concern because it always has air flowing over it.

GM 10 bolt rears are glass, unfortunately.

z_speedfreak

iTrader: (3)

yeah I've seen a guy put one on for the silver state classic but ramair has a good point. if I ever do the sscc I'll put one on other than that im done doing stupid **** lol