LT4 lt4 how many miles can it go?

[biglt4]

whats your feeling on high milage lt4s
if properly maintained, how long can this engine go?

 

[6 Shooter]

From what I've seen and heard, I'd say 150K to 200K with minimal maintenance, plugs/wires, water pump, opti and such.

Having owned an LT4, they are a Rock Solid Engine.

Later . . . . . .
6 Shooter

 

[vetteboy86]

I would imagine it would depend on how hard of life the engine has lived. Most corvette motors can take some abuse, but some drivers can overabuse their cars. It should be easy to tell how the car was driven though.

 

[LT4man]

The LT1 engine, which is the base for the LT4, was engineered with some cool high tech goodies. The reverse flow cooling does a great job of eliminating thermal shock for the heads. The intake manifold was made without any water jackets which was a regular source of anti-freeze leaks for all the previous years of the small block. The engine uses hydraulic engine mounts which eliminates quite a bit of shake, rattle and roll. Vibration is an enemy of accessories and the life of accessories has to be figured into the equation, too. The optispark (even tho a lot of bad things are written about it) enables the timing of this engine to be accurate up to +/- 1 degree. That makes for a smoother running and quieter running engine. All of theses things add up to the durability of the engine. The LT4, IMHO, gets an A+. 150k - 200k with regular maintenance.
Save the Wave!

 

[B17Crew]

From my experience with GM engines, I feel confident, given proper care, that a LT4 is easily good for 200k.

B17Crew

 

[Vettelt193]

I think the LT4 will out-last the car (assuming it isn't abused).

In my opinion, With every performance part you throw at the engine though, you suck a little bit of life out of it.

 

[KANE]

Wow- that is a great question-

How many miles is on your engine?
I think that would be a great post and poll!!

 

[Vette96CE]

111k miles and still running STRONG

I would say at least 200k miles, my CE has 111k miles on it now.
I hope it last for the life of the car ,but if it dies I'm upgrading to a 383 stroker LOL
"Vette96ce" Jim

 

[Dean Barker]

I'll bet we're looking at 500,000 miles for a properly maintained LT4. I think I'll try it!