Big ol Burban

[Addicting]

Well to everyone following , the burb just got off the Dyno. Curious to know what HP and TQ you think it made to the rear wheels.

I will post the graph later today after you get done guessing.

A stock LS2 truck engine at the crank makes 395 HP and 400 ft/lbs.

Mine has ported heads, a slightly bigger cam, and long tube headers.

On a rear wheel dyno the parasitic loss is 30-40% depending on tire size, gears, and weight.

 

[Dave N]

315/335 at the wheels.

 

[Addicting]

A 1999 Chevrolet Suburban with a 454 engine produces 290 horsepower and 410 lb-ft of torque at the crank.

 

[Addicting]

Apparently a hunting forum isn’t as geeked out about HP as I am. Dave was close, it has 321hp at 5500 rpms and 318 ft/lbs at 4700 rpms. Remember that is at the pavement not at the crank.

 

[CRJR45]

I've enjoyed this thread , but the HP seemed like a trick question , so I passed . I am impressed with the finished product , good job !

 

[Dave N]

 

[Addicting]

I've enjoyed this thread , but the HP seemed like a trick question , so I passed . I am impressed with the finished product , good job !

I wish it was done. Still getting it ready for a road trip to Florida at the end of the month. Got a handful of shake down issues to tidy up yet. I had to order a good battery for the main. Decided to try an Odyssey extreme as the winch will run off it as well. Trying to find an exhaust that doesn’t have a drone is a problem. I ordered a stock style one to try, albeit it was made to fit a ford. I also have to replace the starter with a mini and heat wrap. The factory one can’t handle the heat sink from the headers.

Finally, I have to have the trans programming redone better. It slams into gear and I am not a fan.

 

[CRJR45]

I wish it was done. Still getting it ready for a road trip to Florida at the end of the month. Got a handful of shake down issues to tidy up yet. I had to order a good battery for the main. Decided to try an Odyssey extreme as the winch will run off it as well. Trying to find an exhaust that doesn’t have a drone is a problem. I ordered a stock style one to try, albeit it was made to fit a ford. I also have to replace the starter with a mini and heat wrap. The factory one can’t handle the heat sink from the headers.

Finally, I have to have the trans programming redone better. It slams into gear and I am not a fan.

Still impressive stuff . There will always be something that needs to be addressed or changed , or improved .

 

[Addicting]

500 mile shake down. Well back on page 6 we talked about whether to rebuild it or buy a reman transfer case. I rebuilt the one and was confident in it. Well in the last hundred miles I’ve been feeling what I thought was a loose trans mount. To my surprise it was much worse. Tuesday I was under it and there were no signs of a leak. Today I went to find the loose mount and found the rear covered in oil. The rear output shaft seal was out and there is magnesium powder where the seal is supposed to be. I was so disappointed that I packed it up for the night. I will tear it apart tomorrow and see what needs to be redone. At a minimum it needs a new bushing and seal. But I suspect that the new tail shaft bearing failed, which would explain the vibration I felt. Ugh

 

[Dave N]

That sucks.

 

[Tradewind]

Bummer, sorry to hear it. Guess it's good you found it early on.