Not much to update here yet... but I have a few changes pending.

First I am rebuilding my transfer case in an effort to track down a slight vibration I had from the driveline. I think I had some excessive play at the front of my driveshaft so I fear there may be damage to the TC rear housing. They talk about that here:
http://www.silveradoss.com/forums/to...-case-rebuild/

Since I just crossed 70k I guess I should do a fairly comprehensive overhaul. Let me know what you guys think of all these parts.

The rear case: NP246 NP261 NP263 NP261HD NP263HD NP149 NP136 TRANSFER CASE REAR HALF (HOUSING) MAGNESIUM - The American Powertrain Warehouse

The rebuild kit: NP149 NV149 TRANSFER CASE REBUILD KIT FITS ALL WHEEL DRIVE '01-'07 GM TRUCKS & SUV'S - The American Powertrain Warehouse

The filter:NP149 NV149 TRANSFER CASE FILTER FITS ALL WHEEL DRIVE '01-'07 GM (29747) - The American Powertrain Warehouse

The 'case saver': NP246 NP261 NP261XHD NP263 NP263XHD NP236 NP149 TRANSFER CASE PUMP RUB PROTECTOR PLATE BRNY - The American Powertrain Warehouse

A new chain: NP241 NP243 NP246 NP261 NP263 NP149 NP144 TRANSFER CASE CHAIN BORG-WARNER HV072 NEW - The American Powertrain Warehouse

And a new pump: NP149 NV149 TRANSFER CASE PUMP FITS ALL WHEEL DRIVE '01-'07 GM TRUCKS & SUV'S (29074) - The American Powertrain Warehouse

Thoughts on all these parts? Thoughts on what may be overkill?

Instead of a case if it is out of round is it possible I could get away with just a bushing?
NP246 NP149 NP136 NP208 NP231 NP241 NP261 NP263 MUNCIE T10 EXTENSION HOUSING BUSHING WT297-62 - The American Powertrain Warehouse

Thanks for the help guys.

Once this is taken care of its likely I will be swapping to a tighter converter. I think with the power I make that the Yank is just a tad too loose with the 4L80e gearing. Flashing 4200 with a maggie just seems a little unreasonable to me.

 

Damn 4200, ya that's pushing through a little bit.

 

Yea I agree. I think I'm pushing through it a little. It performs awesome on the back half of the track and I dont think im giving up any MPH with it, but I just can't help feeling that its a little too mushy off the line.

 

I will be rebuilding the transfer case this weekend. I skipped the rear case for now. Hopefully I don't find that I need it.

 

Pic's of said rebuild are required!!!

 

anything wrong w the tcase or are you just

 

I'm getting a driveline vibration and I think it could be the back of the TC being out of spec and causing a slight driveshaft vibration.

I have a new bushing for the rear which I hope will help... and while I'm in there I figured all new bearings and a new chain couldnt hurt. I really hope I dont have to buy the ney magnesium case because then it turns into real money... but for the time being its cheap. I'm not going to touch the viscous coupler... sorry if I'm letting you guys down lol but that part still works great.

 

oh yeah...i recall that now...my apologies im getting old...

 

Damn man, I go away for a couple years and you've got this thing ******* flying. Awesome work.

 

Progress?