What did you do to your NBS GMT800 Tahoe/Yukon Today?

[iamdub]

You could have built a helmholtz resonator, to cancel out just the frequency you don’t want to hear. I got some help from another member here, and instructed my exhaust guy how I wanted it. Works like a charm! My drone was terrible at 2k, right at cruising rpm, and now, it’s pretty much silent. I still get my nice loud exhaust when I want it, but no drone. Win-win!!!


I’m running ARH Longtubes with catted y-pipe and a teenie 18” Magnaflow, with standard resonator delete.

Science and math FTW.

Your setup was almost identical to mine except for the headers. I had the stock manifolds, Y-pipe, cats and an 18" Magnaflow clone and resonator delete. Perfect sound, perfect volume and no drone at all.

@alex s had his exhaust dumped under the truck. Having the sound reverberate under the truck is a losing situation regardless of what frequencies you cancel out!

 

[iamdub]

This is the stock 6.0 cam. Anyone know if it's still good?View attachment 257625
Lobes look good to you guys? No flat lobes or anything like that. I was just wondering about wear.

Drag your thumbnail across each lobe and journal like you're trying to scratch it. If it catches anywhere on any of the visible lines, it's too deep. The lines should only be visible and not "feelable".

 

[Sam Harris]

Science and math FTW.

Your setup was almost identical to mine except for the headers. I had the stock manifolds, Y-pipe, cats and an 18" Magnaflow clone and resonator delete. Perfect sound, perfect volume and no drone at all.

@alex s had his exhaust dumped under the truck. Having the sound reverberate under the truck is a losing situation regardless of what frequencies you cancel out!

Yes, that’s going to make a big difference I’m sure.

 

[Tonyrodz]

Drag your thumbnail across each lobe and journal like you're trying to scratch it. If it catches anywhere on any of the visible lines, it's too deep. The lines should only be visible and not "feelable".

Thx Chris, I'll check it out tomorrow. Probably give it away anyway. How would this cam perform in a 4.8 or 5.3? Just curious.

 

[Dantheman1540]

Thx Chris, I'll check it out tomorrow. Probably give it away anyway. How would this cam perform in a 4.8 or 5.3? Just curious.

Likely notice almost no difference. Maybe a small torque bump in a 4.8.

 

[Dantheman1540]

Actually looking at it better it might make a super tame swap for a 4.8 truck that wants to turbo and retain factory converter and smooth idle.

 

[HiHoeSilver]

nice!, notice any difference stopping?

Ok, so i bedded the brakes this evening. I will say there is absolutely a difference in braking. With the nnbs fronts, I can make this thing nosedive right quick. Some of it may be due to high quality parts (all R1 concepts with new Delco performance calipers), but I'm sure the bigger rotors contribute to the stopping power. Well worth the time and $, imo.

 

[Doubeleive]

Ok, so i bedded the brakes this evening. I will say there is absolutely a difference in braking. With the nnbs fronts, I can make this thing nosedive right quick. Some of it may be due to high quality parts (all R1 concepts with new Delco performance calipers), but I'm sure the bigger rotors contribute to the stopping power. Well worth the time and $, imo.

do you have hydroboost or regular vacuum brakes?

 

[HiHoeSilver]

do you have hydroboost or regular vacuum brakes?

Hydro

 

[iamdub]

Yes, that’s going to make a big difference I’m sure.

Unfortunately, I'm living that life at the moment. Well, a little. The small amount that that cutout leaks is plenty to be heard. It's pipe is turned down in front of the axle, so I hear it! I stuffed rags in it and it was a night and day difference.