how hard to install older 5.3 in 07 Tahoe...

[marionso14]

Ok that makes sense. I'm not very knowledgeable with motor work. I'm just gonna shop around for a used gen4 and hope I can get one for decent price. Thanks a lot I appreciate the advice!

 

[iamdub]

I already saw a few on car-part in various parts of the country.

 

[992dr]

If you're considering a rebuild, it may sound odd but eBay has some great deals on Gen IV blocks.
I found an aluminum 5.3 short block out of an SSR for $250 shipped.

 

[iamdub]

^^^That's a steal for an L33!

 

[992dr]

Tell me about it. I wish I never got rid of it.
Its now making 1000hp in an F-Body

 

[bottomline2000]

OP, have you done a compression test on the motor? It may something as simple as a bad valve seal. Can't say I've ever seen a tahoe doing a smokeshow.

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