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5.3 To A 6.0

Lee.Smith

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Chris Senior Enthusiast

Chris

Posted
Posted

Look for value, if you find comparable LQ4 and LQ9 and the LQ9 is another $800, you could make the LQ4 better for that $800. The difference is flat top pistons for more compression and 91 octane tuning, betting the tuning is half the 20hp stock difference, maybe more.

Truth.

 

If i had the time, space, and money to build an LQ4 at the time, i would have. I didnt so i went with the LQ9

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PJB1972 Enthusiast

PJB1972

Posted
Posted

If i had the time, space, and money

Lol... Well, 2 outta 3 ain't bad.

I've got plenty of time. Got to rebuild the rear end and trans first!

  • 5 months later...
madmann26 New Member

madmann26

Posted
Posted

So, I found myself needing an engine last week.

 

With what was presented to me as options by my go to mechanic and the countless $7k longblocks, I opted for the ATK HP93.

 

 

It's replacing a 5.3 that lost compression on #7 at 169,820 miles, Comp Lsr 265 cam, longtubes, 4.11s and a Circle D 3200 stall.

 

The motor swap was started late Thursday. I'm hoping to have it back by Tuesday. I'm replacing the sensors as well, all of them.

  • 2 years later...
Charles_Colfax Enthusiast

Charles_Colfax

Posted
Posted

Since ATK has been mentioned several times I figured I'd throw this out there...

I'm debating between pulling the LM7 5.3 out of my 06 Z71 Suburban and rebuilding it or building a mild LM7 on the side and swapping it in.

Downtime is a concern.

I'm looking at this short block from ATK and building it myself with a decent cam, 799 or 243 heads etc...

I'm looking for more low to mid range power (I've got a 6000# travel trailer) but retaining enough to run 80-ish on the Interstate unloaded.

http://www.high-performance-engines.com/product-p/sp75.htm

Thoughts?967f330427f0c486d38e4ce5369c40f1.jpg

Sent from my moto g(6) using Tapatalk

  • 1 year later...
Tim Smead New Member

Tim Smead

Posted
Posted
On 1/6/2011 at 9:06 PM, oldschool327 said:

 

 

I miss Carolina already. :troll:

 

 

The 4L60 can handle the power if built correctly, and yes you can get a computer from the yard but must be VIN coded with Tech2 and programmed, but now you are talking $$$$$ of additional money than just a simple swap of an engine.

 

This is NOT as easy as it seams gents.

 

This is why you pay extra for Justin to re flash a computer from another truck and it must be in the correct VIN range.

 

Trade the truck for a factory equiped 6.0 or 6.2 and youll be much happier with a drive train that was meant to handle it. You could always go the forced air route but still that is mucho $$ and tranny upgrades also.

Can y’all give e a lil info. I’d greatly appreciate it. Tryin to help and ole timer I look after , his 2013 gmc 1500 giving him a fit. Keep fouling plugs on cylinder 1 and 7: can I pull pistions out bottom end?

swathdiver Senior Enthusiast

swathdiver

Posted
Posted
4 hours ago, Tim Smead said:

Can y’all give e a lil info. I’d greatly appreciate it. Tryin to help and ole timer I look after , his 2013 gmc 1500 giving him a fit. Keep fouling plugs on cylinder 1 and 7: can I pull pistions out bottom end?

Don't know but popping the heads is much easier.

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