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Old 07-27-2021, 11:11 AM   #1
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Thinking of adding a supercharger to my Chevy 6.0 gasser

I have been drooling over F-450's but man, are they expensive (new and used). I love my 2015 Chevy 2500 6.0 gasser and apparently the engine is well regarded. But I would like to improve performance. So I am looking at adding a supercharger. There is a local place that will install and Edelbrcok supercharger for $8k including a tune. Seems like that might be a better way to go vs. trying to find a new/used truck in this market. Appreciate your thoughts.
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Old 07-27-2021, 11:24 AM   #2
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I'm not familiar with the supercharger, my only put would be to consider what the next week link is. Can the transmission handle the extra power, for example. My experience is than no matter what you upgrade, it drives wear and tear down stream.

I traded my 2013 6.0 for a 2020 duramax and do not regret it one bit.
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Old 07-27-2021, 04:11 PM   #3
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Where is the performance lacking currently?

As Sdelam points out, you may/may not be stressing the rest of the drivetrain and support systems beyond their design limits. Depending on how and how often you use the extra power, cooling is likely to become an issue for everything from coolant to engine oil, transmission oil, and even the catalytic converter. Differential and prop shaft U-joints can also not be up to the additional power.

Not saying don't do it, but understanding the current drive system strengths and weak points is key to this being successful in the long term.

I learned a lot from chasing drive train failures in helicopters with upgraded components.

Fred W
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Old 07-27-2021, 04:25 PM   #4
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I would just like to accelerate a little faster with the 5er and not be at 5500 RPM going up a 6% grade. No interest in unloaded hot rodding or breaking speed records. I do have the 4.10 rear which helps.

And mpg does and will suck at all times, loaded or unloaded. I think the 6.0 stands for mpg not displacement. But I'm ok with that. I just do truck things with my truck.
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Old 07-27-2021, 04:28 PM   #5
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Adding a supercharger to an engine isn't arms easy as one thinks. Especially if you want the engine to last.

Engines built for super/turbo charging often have beefed up blocks or have a "girdle" added. A reinforcement between bottom of block and "pan" which helps keep the main bearings from leaving the block.

Also, compression ratios are often different as boost can rend to cause detonation.

Boosted engines from the factory also incorporate piston cooling which is oul sprayed into the bottom of the pistons from a passage drilled the length of the rod or from separate spray nozzles placed around the perimeter of the crankcase.

Merely bolting on the "blower", giving the engine a tune, often leads to unwanted results when towing, which can put a lot more stress on an engine/drivetrain than just showing off on the street.

Start with holes melted in pistons if anything goes wrong.
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Old 07-27-2021, 04:35 PM   #6
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Originally Posted by TitanMike View Post
Adding a supercharger to an engine isn't arms easy as one thinks. Especially if you want the engine to last.

Engines built for super/turbo charging often have beefed up blocks or have a "girdle" added. A reinforcement between bottom of block and "pan" which helps keep the main bearings from leaving the block.

Also, compression ratios are often different as boost can rend to cause detonation.

Merely bolting on the "blower", giving the engine a tune, often leads to unwanted results when towing, which can put a lot more stress on an engine/drivetrain than just showing off on the street.
Everything I have read about the gm 6.0 says it is bulletproof and likes an SC.
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Old 07-27-2021, 04:44 PM   #7
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Originally Posted by corn18 View Post
I have been drooling over F-450's but man, are they expensive (new and used). I love my 2015 Chevy 2500 6.0 gasser and apparently the engine is well regarded. But I would like to improve performance. So I am looking at adding a supercharger. There is a local place that will install and Edelbrcok supercharger for $8k including a tune. Seems like that might be a better way to go vs. trying to find a new/used truck in this market. Appreciate your thoughts.
How heavy is your unit ? I haul a TH cross country every yrs with a 6.0 was an 03 now a 19 and no issues with my 9300 lbs Th yes a little slow over the passes in Co but once down in the flat lands hauls at any speed . just trade it in on the new 6.6 gasser
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Old 07-27-2021, 04:50 PM   #8
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How heavy is your unit ? I haul a TH cross country every yrs with a 6.0 was an 03 now a 19 and no issues with my 9300 lbs Th yes a little slow over the passes in Co but once down in the flat lands hauls at any speed . just trade it in on the new 6.6 gasser
12,090 lbs
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Old 07-27-2021, 07:50 PM   #9
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Everything I have read about the gm 6.0 says it is bulletproof and likes an SC.
Yeah, a GM LS motor has cross bolted 4 bolt mains, so 6 bolt mains. Then the 6.0 is especially liked for boost because it is iron while many other LS blocks are aluminum. So it's not unheard of to see a 8-9 sec 1/4 mile car running a basically stock 6.0 block and crank making over 1000 hp.

All that said I wouldn't supercharge it but look for a single turbo kit, maybe even just a remote turbo. The turbo is much easier on the transmission and driveline and runs cooler. When you don't need it, it should run similar to stock. It will still make the same kind of hill climbing power on the top end.
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Old 07-27-2021, 07:59 PM   #10
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I agree, those engines accept mods quite nicely, and those add on superchargers don't add a lot of boost. I'm sure you can get one in every range, but the kits aren't adding a radical amount of boost.
It will give you your peak torque down real low.
I'm not sure about the 15, but when I bought my 99 which was the first year (cast iron heads), GM claimed the new generation of engines produced 90% of their peak torque at just 1200 RPM.
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Old 07-28-2021, 08:05 AM   #11
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I've been debating this same thing. Mine is a 2007 2500HD with a 6.0 and a manual 5 speed. My debate is blower, external supercharger, or turbo. Whichever direction, I want minimal boost, just enough to help out some without melting pistons.
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Old 07-28-2021, 11:17 AM   #12
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Save your money and time and go buy a diesel engine truck. That is what you need to tow a large trailer with and be comfortable driving.

I have towed with both a gas engine truck and a diesel engine truck. Let's just say there is no comparison between the two. The diesel engine truck will out preforms the gas engine truck any day.
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Old 07-28-2021, 11:48 AM   #13
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Swap in lower gears. A lot cheaper than $8k and very effective.
That is if you still don't want a diesel truck anyway.
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Old 07-28-2021, 11:55 AM   #14
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Just let it scream. It's what they do best and those engines are pretty bulletproof.

As mentioned, if you want torque at low RPMs, get a diesel.
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Old 07-28-2021, 12:27 PM   #15
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I just ordered the Whipple supercharger. Install will be in Oct. I'll report back.
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Old 07-28-2021, 12:45 PM   #16
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I think the piston cooling and going diesel are all correct. But if you’re going to do it keep the boost below 7 psi and install an EGT gauge. Get an oil analysis before and several after your trips.
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Old 07-28-2021, 01:28 PM   #17
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I think the piston cooling and going diesel are all correct. But if you’re going to do it keep the boost below 7 psi and install an EGT gauge. Get an oil analysis before and several after your trips.
Standard pulley is 6 psi boost. I just want the flat torque curve I see on the dyne runs for the 6.0 with supercharger.

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Old 07-28-2021, 02:33 PM   #18
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You forgot...

Quote:
Originally Posted by pgandw View Post
Where is the performance lacking currently?

As Sdelam points out, you may/may not be stressing the rest of the drivetrain and support systems beyond their design limits. Depending on how and how often you use the extra power, cooling is likely to become an issue for everything from coolant to engine oil, transmission oil, and even the catalytic converter. Differential and prop shaft U-joints can also not be up to the additional power.

Not saying don't do it, but understanding the current drive system strengths and weak points is key to this being successful in the long term.

I learned a lot from chasing drive train failures in helicopters with upgraded components.

Fred W
Fred, you forgot:
  • Crankshaft journals
  • Connecting rod journals
  • Rear axle windup/suspension fittings
And that doesn't even consider the transfer case, front differential, and front suspension if its 4WD.
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Old 07-28-2021, 02:40 PM   #19
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Fred, you forgot:
  • Crankshaft journals
  • Connecting rod journals
  • Rear axle windup/suspension fittings
And that doesn't even consider the transfer case, front differential, and front suspension if its 4WD.
We're not taking about a 1,000 HP mod here. I can't imagine how 400 RWHP / 400 torques can hurt an LS 6.0L cast iron motor and 6l90 tranny. If that were they case, they would not be referred to as bulletproof. I am not a young buck looking for 11 sec 1/4 miles.

Cooling will be an issue. Will need to keep an eye on that.
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Old 07-28-2021, 02:47 PM   #20
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A friend of mine bought a used 6.0 motor (stock) and put it in an 80's stepside truck. Put a Whipple on it and has been driving/racing the crap out of it for several years. He's running way more boost than you are going to do and even put a cam in it for more go power. -everything else is stock.

I don't remember what hp he has at the rear tires but he can't keep it hooked up any more with street legal tires.

Enjoy your truck...sounds like fun.
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