Any Supercharged K2XX Owners?

[250motorsportz]

Hey guys,

My 2015 Sierra Denali 6.2L/8S is scheduled to arrive at the end of this month. Just got out of a 2014 High Country 6.2L but was thinking about getting some more power out of my Denali. Has anyone supercharged their 5.3L or 6.2L K2XX truck? Not interested in hearing about the K2's as they are completely different.

My choices right now are:
1) Whipple - https://whipplesuperchargers.com/index.php?dispatch=products.view&product_id=180
2) Edelbrock - no pricing avail.
3) Hennessey - way too pricey for their packages and I've heard mixed reviews
4) SLP - no product info avail for 14/15.


Thanks in advance!

[Chris]

Call up Magnuson. There is one person on here I know of wit a supercharged 6.2, but his is a 2014 6 speed. His name on here is bassmechanic

[FoD]

I'm about to order a ProCharger for my '14 5.3L. The Magnuson is a 1.9L. The EForce is a 2.3L. The Magnuson is about $500 less than the EForce. The ProChager is about $1000 less than the Magnuson. Others that have the ProCharger with headers on a 5.3L are pushing 500RWHP. In a 6.2L, I'd imagine 60-100 more.

[WendysOrBust]

I'm about to order a ProCharger for my '14 5.3L. The Magnuson is a 1.9L. The EForce is a 2.3L. The Magnuson is about $500 less than the EForce. The ProChager is about $1000 less than the Magnuson. Others that have the ProCharger with headers on a 5.3L are pushing 500RWHP. In a 6.2L, I'd imagine 60-100 more.

The only information I can find on the procharger is this;

 

http://www.procharger.com/supercharger/blog/?p=1309

 

http://www.procharger.com/TRUCK_SUV/2014_GMtruck_53L.shtml

 

But I was not able to find any pricing information. Do you have any?

[frenchsquared]

Why not Vortech? I run a Vortech on my corvette and love it.

I would look no where else, if I was going to super charge my Silverado.

[SMiller]

I know I am of zero help but I am concerned that the compression is so high on the 6.2 and adding boost on top will be a bad combo.

 

Have you thought about what seeing what headers, full exhaust and a tune would do?

 

I would have to stand behind Hennessey as I feel they have their shit together as far as throwing a quality tune/supercharger package together.

 

Interested to hear the mixed reviews are, I am not endorsing them whatsoever! Just wondering myself.

[Inacanyon]

I know I am of zero help but I am concerned that the compression is so high on the 6.2 and adding boost on top will be a bad combo.

 

Have you thought about what seeing what headers, full exhaust and a tune would do?

 

I would have to stand behind Hennessey as I feel they have their shit together as far as throwing a quality tune/supercharger package together.

 

Interested to hear the mixed reviews are, I am not endorsing them whatsoever! Just wondering myself.

Direct injection. High compression isn't as much of a worry

[SMiller]

Direct injection. High compression isn't as much of a worry

They sure do spark knock and have to retard timing a lot being bone stock.

[Inacanyon]

Do you have anything to support that?

 

These engines don't require as advanced timing due to more efficient burn.

[Boombastic]

I have the Magnussen TVS 1900 and a set of American Racing headers on my truck.

I have a 2014 GMC crew cab Denali truck with a 6.2 L direct inject motor. I had Manny and the boys at Dasilva motorsports in Kitchener Ontario install the Magnuson TVS 1900 supercharger and a set of American racing headers. The truck Put down 320RWHP in stock form. The SC gave it 100 RWHP and the headers added about 30 hp more. Truck ran 14.7s in the 1/4 stock and then ran mid 13 with the SC. With the headers the truck got down to very low 13s. With just a bit more fine tuning by ARUN at dasilva's and a good launch in 4wd off the line then switching to 2wd, I got the truck to run several 12.9s. at 104 to 105 mph.

 

My Best was

60 ft .... 1.84\

1/8.....8.28 @ 83mph

1/4 ....12.94 @ 105mph

[CAtaylor]

Do you have anything to support that?

 

These engines don't require as advanced timing due to more efficient burn.

 

Here is a good reference. This is a 5.3.

 

http://www.gm-trucks.com/forums/topic/158431-53l-kr-during-data-logging/

[Inacanyon]

Duplicate

[Inacanyon]

 

Here is a good reference. This is a 5.3.

 

http://www.gm-trucks.com/forums/topic/158431-53l-kr-during-data-logging/

Good info just something to keep in mind, KR does not always mean there is/was knock. There are scenarios where knock is likely to occur and the engineers add KR as a preventative measure. You can prevent knock with much less timing retard than it takes to remove it once episode already begun.

[CAtaylor]

dbl post

[CAtaylor]

Good info just something to keep in mind, KR does not always mean there is/was knock. There are scenarios where knock is likely to occur and the engineers add KR as a preventative measure. You can prevent knock with much less timing retard than it takes to remove it once episode already begun.

I agree but steady state driving down the highway shouldn't be one of scenario's. Tip in, shifts and lugging the engine I can understand. It hasn't been noted as much in the 6.2's that I have seen but most of the people that have actually logged the 5.3's have seen it. Regardless, a good tuner with forced induction can make it go away and It wouldn't worry me one bit as along as I had a means to see what the engine was actually doing after the tuning was done.