What is the Difference Between a Corvette 6.2 and a Denali 6.2?

[Xsbank]

Wondering how the higher output is accomplished?

 

[adventurenali92]

Headers, exhaust, fuel rails, cam, a lot different. Probably injectors are different.

 

[tom3]

Tuning? These engines can be tuned for different applications with some real differences in output, etc.

 

[swathdiver]

Wondering how the higher output is accomplished?

RPMS!

 

[THarber]

Cam, intake, exhaust and RPM's.

Tim

 

[Xsbank]

Same heads? Ecu? I noticed my Yukon doesn’t have a marked red line. How is the intake different? I guess headers of a sort might be helpful with all the rest. Are Corvettes having lifter issues Too?

 

[THarber]

Same heads? Ecu? I noticed my Yukon doesn’t have a marked red line. How is the intake different? I guess headers of a sort might be helpful with all the rest. Are Corvettes having lifter issues Too?

Block, and heads are the same. Camshaft has different lift and duration designed for higher rpm's. The intake is also designed for higher rpms. They have lifter issues too.

 

[Xsbank]

Thanks everyone, appreciate the replies.

 

[avalonandl]

on The LS engines it was the intake, exhaust, tuning. Same cam. The LT the cam timimg looked the same.

 

[sealandsky]

Same heads? Ecu? I noticed my Yukon doesn’t have a marked red line. How is the intake different? I guess headers of a sort might be helpful with all the rest. Are Corvettes having lifter issues Too?

The rev limiter should cut you off at 6,000 rpm.

 

[jimstem]

So given all that, is there a way to take that 6.2 in the Denali (or starting in 2018 with the Tahoe RST package) up to the same output as the Corvette, without adding a supercharger? I'm surprised there isn't a kit or something that basically transforms the SUV 6.2 into the Corvette 6.2 output.... or maybe I'm missing something....

 

[Marky Dissod]

... given all that, is there a way to take the Denali 6.2L (or starting in 2018 with the Tahoe RST package) up to the same output as the 'vette, without adding a supercharger?

ECM tune & TCM tune would be the biggest bang for the buck in terms of getting a GMTK2xx 6.2L closer to 'vette 6.2L output parity.
If you specify that you'll never use 87 octane , or 87 & 89 octanes, the engine tune can be considerably improved.
As for the TCM, GM programs it to maximize MpGs, meaning less fun.
A TCM tune may lower the peak possible mileage by 2 or even 3MpG, but the transmission will become more responsive, improving Smiles per Gallon.

I'm still confused as to why more of y'all ain't gotten your vehicles tuned yet ...