Replacement motor questions but hopefully fixable

[rockdogz]

So I seem to have a blown (and not blown as in supercharger) up 5.3 in my 2008 Tahoe. It just happened but I think it’s a spun rod. I had been planning to research engine swaps but this came at a bad time so I just want to swap in a remanufactured engine.
should I go for another 5.3 or is there a straightforward swap or kit for something larger (6.0?) or newer? I need something that’s already sorted out and will be smog legal in CA.
Any and all suggestions on someplace that could hook me up would be most appreciated!
Thanks
Tom

 

[S33k3r]

Stick with another 5.3 if you are a Californian. Also, knowing your budget might be helpful but, ultimately, look for a used 5.3 with 100k or less miles on it. These typically go for around $2-$3k around here, and then you have to pull the old engine and install the new engine. You may have to reuse your accessories, too.

 

[TollKeeper]

This may help you as you move forward with your build.

https://www.onallcylinders.com/wp-content/uploads/2018/04/05/LS-LT-Reference-Guide-Summit-Racing.pdf

I agree, with you being in California, stick with your 5.3. Hell I might even consider a 4.8 depending on AFM/DOD. Go used, it will save you some coin, and typically speaking, the LS is a long term engine.

 

[rockdogz]

Thanks for the info.
I pulled a P0304 code of a misfire and am going to try new plugs, wires, and coil to see if it goes away…may not be a rod after all.

 

[Tonyrodz]

Thanks for the info.
I pulled a P0304 code of a misfire and am going to try new plugs, wires, and coil to see if it goes away…may not be a rod after all.

Wishing you luck buddy.

 

[swathdiver]

So I seem to have a blown (and not blown as in supercharger) up 5.3 in my 2008 Tahoe. It just happened but I think it’s a spun rod. I had been planning to research engine swaps but this came at a bad time so I just want to swap in a remanufactured engine.
should I go for another 5.3 or is there a straightforward swap or kit for something larger (6.0?) or newer? I need something that’s already sorted out and will be smog legal in CA.
Any and all suggestions on someplace that could hook me up would be most appreciated!
Thanks
Tom

If you look for another 5.3, the 2010 and later engines have VVT. You can opt not to hook this up or pin your wire harness computer connector for it.

Hopefully that code has an easy fix, if not, it may only be time to replace the lifters, VLOM and lifter trays and such.

 

[rockdogz]

Thanks, I'm looking into the VLOM now. I have had an oil leak from the top end somewhere and now coolant leak too so would not be surprised to find the intake loose as others have. So we'll see if it's an ignition issue or perhaps lifter.

 

[1BADI5]

Thanks for the info.
I pulled a P0304 code of a misfire and am going to try new plugs, wires, and coil to see if it goes away…may not be a rod after all.

Could also be an injector, you'd have to pull your long term and short term fuel trims to verify though.

Could be a burnt valve, bad lifter or valve spring too. At least you have it narrowed down to cyl 4

 

[rockdogz]

Thanks I've been wondering about the injectors...how do you get them checked/cleaned? Do I just find a shop that does this?

 

[Rocket Man]

Hoping for the best.