2003 5.7, 149k miles, when to rebuild?

[RazorReza]

Not sure of when to rebuild my 5.7? Run it down? If so, am I compromising the blocks integrity to be reused?

Currently, she's running hard but mileage is 10 to 1.

Suggestiins, insights, opinions?

 

[RonJon '06]

Parts for the new Hemi are expensive so unless you want to rebuild it for the sake of performance I would just keep on running it. When it starts to burn a lot of oil or if a head gasket fails then I would think about tearing into the motor. The block will be fine, they are typically rebored 20 thousandths over on a rebuild anyway. Welcome to the Forum.

 

[RedRamHemi]

I agree, the block is a beast. Drive it like you stole it!

 

[ST-8]

If it ain't broke don't fix it

 

[Egress]

If it ain't broke don't fix it

A complete contradiction of 99% of this entire website lol.

 

[LTDMan]

I like fixing things before they break personally. I guess it all depends on how much disposable income you have. Though personally, if I was gonna pull it for a complete rebuild Id have to go ahead and build it up to have some real power as well.

 

[Harley Harrold]

If you are looking to build a high performance engine then rebuild it, otherwise if it will stay relatively stock, drive it until it lets you know it is failing, then rebuild it. A well maintained engine can get around 300K before needing a rebuild, providing you don't have a premature failure.