Hey guys I need your help . I have a factory 1999 Chevy suburban with some upgrades . I have been interested in a 5.3 swap but have now came to the point I have to do something on a budget . With 200,000 miles plus it's time . I am beginning to get a knock noise only at idle when u rev the engine there is nothing . A local shop said this is notorious for the vehicle mileage etc and is piston slap and could last a long time this way . I need a recommendation on a conversion ... how do I go by getting the engine ... what is truly needed ... harness .. computer ... engine etc . I have heard they aren't to bad I just want to know what I'm getting myself into and the parts I need to aquire . Also is there any website that might help ... parts and knowledge ... thanks a million

 

Any gen 3, 24 tooth reluctor wheel ls v8 shortblock will drop in and work with all the accessories. You don't need a harness, computer, etc. you already have that stuff.

 

Except he has an old 5.7 350 Vortec in a 99 not a 5.3.

That being said if its only got a little tick it might run for a long time more. My uncles 1994 had over 300,000 on it when he bought his 2005 GMC Sierra in 2005. Still ran with plenty of power, but had a knock in the lower end for over 100K.