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5.3 to 6.0 swap is it worth it ??

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5.3 to 6.0 swap is it worth it ??

Postby IceTea2001 [OP] » Feb 15 2020, 3:58am

So I have a 5.3 in my 2001 Silverado and it runs perfect still but she’s got a crap ton of miles on her.
I’m the future I’m thinking of getting a low mile 6.0 and dropping in a cam and doing some other performance mods.
Is it worth it performance wise to get a 6.0 or should I stick with a 5.3?
Thanks
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Re: 5.3 to 6.0 swap is it worth it ??

Postby B52Bombardier1 » Feb 15 2020, 4:48am

It would not be worth it to me. Lots of wiring changes and PCM software changes - this is not a plug and play swap. It can be done, just not easy.

Rick

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Re: 5.3 to 6.0 swap is it worth it ??

Postby silentbravo » Feb 15 2020, 7:19am

I guess it depends on whether you need or want the extra power? There are definitely gains to be had, but the cost difference between a 5.3 and 6.0 can vary a lot. 6.0 is basically one of the most sought after swap engines, so they typically aren't laying around cheap, whereas there are a ton of 5.3L out there and much less cost + a lot more choices.

It is actually pretty simple swap, the engine itself will swap in almost seamlessly. Transmission may need an adapter or could bolt right to it, can't remember at the moment... Then the only other thing you would have to do is get a custom computer tune which isn't that hard or really that expensive either.
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Re: 5.3 to 6.0 swap is it worth it ??

Postby Walkers » Feb 15 2020, 2:56pm

What do you consider a crap ton of miles? Reason I ask is that I have run my last several trucks to 400,000 miles and they still ran well and no smoke when sold.
A 6.0 has a bit more displacement but they are fuel pigs. I average about 12mpg with mine. Lots of performance parts for a 5.3 too, so unless you are wanting to race I would probably stick with a 5.3.
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Re: 5.3 to 6.0 swap is it worth it ??

Postby IceTea2001 [OP] » Feb 15 2020, 3:18pm

Reason I say lot of miles is shes starting to act up a little sometimes. Sometimes when I start it my oil pressure dips down in the 19-22 range. Usually it idles at 40 and at full throttle about 55psi
2001 Chevy Silverado Z71 5.3 with almost 255,000 miles
Performance Tuned, Carven R, Ported Throttle Body.
1971 C10 350V8, Turbo 350 Trans with True Dual Flowmaster Original 40 Series, Longtube Headers
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Re: 5.3 to 6.0 swap is it worth it ??

Postby B52Bombardier1 » Feb 15 2020, 6:03pm

Try a new oil pressure sensor if you are worried. But those pressures are generally good.

Rick

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Re: 5.3 to 6.0 swap is it worth it ??

Postby IceTea2001 [OP] » Feb 16 2020, 2:30am

Ok thanks
2001 Chevy Silverado Z71 5.3 with almost 255,000 miles
Performance Tuned, Carven R, Ported Throttle Body.
1971 C10 350V8, Turbo 350 Trans with True Dual Flowmaster Original 40 Series, Longtube Headers
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Re: 5.3 to 6.0 swap is it worth it ??

Postby ThaDoubleJ » Feb 16 2020, 2:58am

I did this, newer truck though:

09 1500 5.3 to 6.0 Swap, For Real

Here's the gist: I'm at 5000 feet, with the 5.3 and a 4 speed my truck, and two others that we have at work, were pulling 11.5 second 0-60s. I did an L96 6.0 from a 2015 3/4 ton, it was almost plug n play, just had to change out the front cover to non VVT (factory harness plugged right in) and left the AFM plug hanging behind the manifold. I also had the trans rebuilt, put a shift kit, corvette servo, metal accumulators, stronger sun basket (that's not what it's called, I forget) and of course all new guts. I put a mild truck cam in, intake, exhaust, and a black bear tune.

Guess what? The truck is still slow. It weighs 11 tons and has a 4 speed. There's no air up here for it to breathe. I'm pretty frustrated to be honest. I can hit 60 in 9.5 seconds now, but I have to fart around with the accelerator to trick the torque management system (which I had turned almost all the way off). I can't do a burnout in 1st, but I can spin hard enough to activate traction control on the 1-2 shift.

Guess what else I got for my troubles...13 MPG on 91 octane fuel.

I haven't made it to a dyno yet, but I estimate that I should make a corrected-for-sea-level 415ish HP at the crank, which should equate to more HP at the wheels than my 5.3 made at the crank.

Doesn't matter, the truck weighs 11 tons, that's the end of it

I say not worth it. Get another 5.3 with less miles, put a nastier cam in it, maybe intake and heads, maybe headers (gotta be long tubes though, so prepare to move your cats and all that crap) and get a real tune on a dyno. Probably be faster than mine at that point and you don't have to do anything hokey with the wiring harness or computer. Then, if you have a 4L60E, it'll explode, so do that too while you're in there.

Again, mines an 09, don't know about the 01, but regardless of bore, valve sizes, cam, intake, exhaust, fuel etc., when I put my foot down, my computer says "NO" and won't let me haul ass. Plus, the truck weighs 11 tons.

On my Subaru, I didn't even have to pull the engine. Bigger turbo, intake, exhaust, fuel pump, and some other light modifications + dyno tune = dangerously fast in the lower gears. It hits so hard in 1st and 2nd I don't let other people drive it. It doesn't weigh 11 tons. It also makes 5 HP less than a stock 5.3... 4.44 gears don't hurt either.

What I'm saying is that if you want to go fast, get an Ecoboost, the one I drive for work is a missile. Doesn't sound as vicious as my Silverado though, that's for sure.
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Re: 5.3 to 6.0 swap is it worth it ??

Postby IceTea2001 [OP] » Feb 16 2020, 3:14am

Ok sounds like I’m better off sticking with a 5.3, thanks for the info
I been wanting to do longtubes and high flow cats and I’ve been looking at the Brian Tooley Racing Stage 4 Truck cam and a circle D 3200 stall with a mild trans upgrade for my 4l60
My idea for the truck is to be a pretty fun Daily driver

I agree the Silverado’s just sound awesome, I have a Carven r on mine
2001 Chevy Silverado Z71 5.3 with almost 255,000 miles
Performance Tuned, Carven R, Ported Throttle Body.
1971 C10 350V8, Turbo 350 Trans with True Dual Flowmaster Original 40 Series, Longtube Headers
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Re: 5.3 to 6.0 swap is it worth it ??

Postby letitsnow » Feb 16 2020, 1:53pm

ThaDoubleJ wrote:I did this, newer truck though:

09 1500 5.3 to 6.0 Swap, For Real

Here's the gist: I'm at 5000 feet, with the 5.3 and a 4 speed my truck, and two others that we have at work, were pulling 11.5 second 0-60s. I did an L96 6.0 from a 2015 3/4 ton, it was almost plug n play, just had to change out the front cover to non VVT (factory harness plugged right in) and left the AFM plug hanging behind the manifold. I also had the trans rebuilt, put a shift kit, corvette servo, metal accumulators, stronger sun basket (that's not what it's called, I forget) and of course all new guts. I put a mild truck cam in, intake, exhaust, and a black bear tune.

Guess what? The truck is still slow. It weighs 11 tons and has a 4 speed. There's no air up here for it to breathe. I'm pretty frustrated to be honest. I can hit 60 in 9.5 seconds now, but I have to fart around with the accelerator to trick the torque management system (which I had turned almost all the way off). I can't do a burnout in 1st, but I can spin hard enough to activate traction control on the 1-2 shift.

Guess what else I got for my troubles...13 MPG on 91 octane fuel.

I haven't made it to a dyno yet, but I estimate that I should make a corrected-for-sea-level 415ish HP at the crank, which should equate to more HP at the wheels than my 5.3 made at the crank.

Doesn't matter, the truck weighs 11 tons, that's the end of it

I say not worth it. Get another 5.3 with less miles, put a nastier cam in it, maybe intake and heads, maybe headers (gotta be long tubes though, so prepare to move your cats and all that crap) and get a real tune on a dyno. Probably be faster than mine at that point and you don't have to do anything hokey with the wiring harness or computer. Then, if you have a 4L60E, it'll explode, so do that too while you're in there.

Again, mines an 09, don't know about the 01, but regardless of bore, valve sizes, cam, intake, exhaust, fuel etc., when I put my foot down, my computer says "NO" and won't let me haul ass. Plus, the truck weighs 11 tons.

On my Subaru, I didn't even have to pull the engine. Bigger turbo, intake, exhaust, fuel pump, and some other light modifications + dyno tune = dangerously fast in the lower gears. It hits so hard in 1st and 2nd I don't let other people drive it. It doesn't weigh 11 tons. It also makes 5 HP less than a stock 5.3... 4.44 gears don't hurt either.

What I'm saying is that if you want to go fast, get an Ecoboost, the one I drive for work is a missile. Doesn't sound as vicious as my Silverado though, that's for sure.


It seems like adding boost is the answer, especially at elevation...
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