Anyone have a Denali 6.2 torque chart?

[TowGMC]

Trying to find a torque chart for the 6.2 engine in my Denali. GM Cust Svc says there's no such thing. I've never owned a car or SUV that I couldn't find the dyno info for. Need to change the final drive ratio so the Denali will tow my trailer better in 5th gear so I'm not always pulling in 4th and getting crappy fuel economy (8.5-9.5). Putting it in 5th has the trans constantly downshifting and up shifting even on flat highways at 70 mph.

So I need to get the engine further up on the torque curve in 5th without getting too carried away. But 2300-2400 in 5th is way out of the power band. I know I'll give up a bit in fuel economy when on the highway when not towing a trailer but I'm only getting 18 or so at 75 so if it drops to 17 that's hardly going to make a difference in fill ups.

Thanks

 

[domin8]

A) Get your truck on a dynamometer and learn the numbers for your engine.

2) Google Image search

 

[TowGMC]

A) Get your truck on a dynamometer and learn the numbers for your engine.

2) Google Image search

I have considered the dyno run option. The local shop that does the dyno pulls for my race car has a well maintained 4 wheel dyno but that's $150 for the setup and pulls. And haven't found a chart for a stock engine, just a few modded engines. Still looking.

 

[stevek]

Look for any of the 6.2L gm trucks, they're the same motor. Numbers will be different slightly depending on the tranny, drive, etc.

 

[doubletapdrew]

Here's one from Airaid's site. Dunno how accurate it is. Torque curve looks fairly flat on the 6.2.
Also blackbear can hook you up with a tune that'll pick up power and make the tranny more tow friendly. And would be a heck of a lot cheaper than swapping differentials.

 

[JennaBear]

I don't have one printed out to scan for you, but 4.10s would be perfect for you based on what you said. They come stock in the Sierra Denalis, and won't kill your mileage.