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5.3 Or 6.0, Engine swap
storeyr
post Jan 7 2018, 08:07 PM
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Okay, I have my Tahoe looking like I want it, new keys in front, 1.5 spacers in rear, 20x9 replica wheels, 33x11.50-20 Nitto ridge grapplers and Westin bull bar. Now I am looking at the drivetrain. I have 210,000 on the 5.3, and while it is running fine, I know itís a matter of time before it goes. My question is this. What are the advantages of swapping to a 6.0? I want Drive ability and reliability. I have no desire to add any performance mods such as superchargers, nitrous or turbos. Donít tow anything heavier than a 16 foot utility trailer. Just want a reliable truck, and little better mpg. Please give me any thoughts you have on the 6.0 over the 5.3.
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91_bowtie
post Jan 7 2018, 09:01 PM
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If you're looking for better mileage, the 5.3 wins. Both will be reliable and drive like stock.


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83 Ford Fairmont
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storeyr
post Jan 7 2018, 10:00 PM
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QUOTE (91_bowtie @ Jan 7 2018, 09:01 PM) *
If you're looking for better mileage, the 5.3 wins. Both will be reliable and drive like stock.


Thanks, I thought I had read somewhere that the 6.0 got better mpg, I couldnít see how. Appreciate your response, Iíll probably stick with the 5.3.
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Gary P
post Jan 8 2018, 05:20 AM
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QUOTE (storeyr @ Jan 7 2018, 11:00 PM) *
QUOTE (91_bowtie @ Jan 7 2018, 09:01 PM) *
If you're looking for better mileage, the 5.3 wins. Both will be reliable and drive like stock.


Thanks, I thought I had read somewhere that the 6.0 got better mpg, I couldnít see how. Appreciate your response, Iíll probably stick with the 5.3.


Maybe you are be thinking about the comparisons of an "older" 6.0 to the "newer" 6.0's??? I'm not sure of the years, but I recall when I was looking for my 2500HD in 2011 and 2012 that sometime before I bought mine there were changes that helped the MPG's in them. Don't think a stock 6.0 will get better MPG's than a stock 5.3 though.


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2012 Summit White Silverado 2500HD 4WD Z71 Crew Cab, New 8/31/12 ... with a Black Bear Performance tune - Love it!
2005 Summit White Tahoe 4WD Z71 (For the wife.... finally!)

2002 Silverado 1500 LS, Ext cab, 4WD...Gone, but not forgotten.... SOLD 8/31/12

How to Donate to Z71T-S.com ==>
http://z71tahoe-suburban.com/iboard/index....c=25714&hl=
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91_bowtie
post Jan 8 2018, 12:23 PM
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QUOTE (storeyr @ Jan 7 2018, 10:00 PM) *
QUOTE (91_bowtie @ Jan 7 2018, 09:01 PM) *
If you're looking for better mileage, the 5.3 wins. Both will be reliable and drive like stock.


Thanks, I thought I had read somewhere that the 6.0 got better mpg, I couldnít see how. Appreciate your response, Iíll probably stick with the 5.3.



Like Gary said, it can vary depending on what you're comparing. I'd offer comparisons, but none of my motors were anywhere near stock.


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83 Ford Fairmont
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mpope2
post Jan 9 2018, 12:04 AM
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Stay 5.3 if you don't want to loose mpg's


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2002 Tahoe Z71: Medium Green Metallic, GT4 3:73s, GM White Keys, 285/70/17 BFG A/T KO2's, Vette servo, 6 on high, factory high pass crossover bypass, key fob un panic, Kenwood1665PS +1695PS 6.5" in the doors, 8" SSL SS8 out back, Candied tails, Weathertechs

2000 ECSB Sierra Z71: Pewter Metallic, GT5 4:10s, LQ9 swap, RC keys, Zone 1.5", 315/75/16 BFG A/T KO's, EGR delete, 40 series, MSD 8.5's, Vette servo, upgraded trans cooler, 130amp alternator upgrade, 6 on high, key fob un panic, Kenwood 6.5"/ 4x6" in doors, 04-06 Silvy tails
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Scott
post Jan 9 2018, 08:36 AM
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x2


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~ Bunch of Mods ~
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TexasVet
post Feb 11 2018, 11:30 PM
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LQ4 is the engine out of the HD gas trucks. 300-315hp and about 10-12 MPG tank average. LQ9 is the exact same engine as the LQ4, but with a flat top piston. Itís rated at 390HP. It powered the Escalade and Silverado SS. It to is in the 10-12npg range. After that they started with DOD (displacement on demand). Itís known for having all kinds of issues related to the oil solenoids that effectively shut off the cylinders. These engines are not desirable for an engine swap unless you delete the DOD system, to include the cam, all together.
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