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

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Sam Harris

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Ok. Parts list for my upcoming upgrades.. This is all due to my original 4L60E with now 224k on it, and a leaking rear main.. I had to do some things "while we're in there"... scope creep...?

✅Performabuilt Lvl 3 transmission
✅2800 stall triple disk billet torque conv -FTI
✅STI Flexplate (ATI-915537)

✅Rear main seal -complete assy / housing: (12639250)
✅Complete heads -minus valve covers. PRC 225cc / 62cc chamber -stnls valves, dual springs, titanium retainers
✅Chrome moly pushrods OEM length: 7.4” ETA: These were way too short. Combination of new cam, lifters, rockers, as well as the head's angle changing from IIRC 13deg, to new of 15deg meant the new pushrods length is: 7.575" (TSP chrome moly:25-7575-1)
✅Head gaskets -OEM (12498544)
✅Cam -Texas Speed stage 2 Truck: 212/218, .600”/.600”, 112 LSA, 110 ICL
✅lifters -Morel 7717
✅Lifter trays -OEM (12595365)

✅trunnion / rockers -RPM speed pre-installed trunnions MAX EFFORT Rocker Arms w/NOFLEX Bolt
✅Oil galley diverter barbell -Improved Racing (EGM-501)

Pushrod length checker (CXM-PT3126878)

✅Oil pump -Melling hv (10296)
✅Timing chain set -Cloyes single roller -hex adjust (236-9-3158A)
✅Timing cover gasket -Mr. Gasket (61015G)

✅Balancer bolt -ARP (46-234-2503)

✅ARP head bolts (46-134-3609)

✅Crank seal -12585673
✅LSX cam bolt kit -ARP (46-134-1003)
✅LSX cam retainer plate (28-12589016)
✅LSX cam retainer plate bolts (4) (28-11561455)
✅balancer install tool

✅Intake Manifold gasket -OEM (12533587)

✅Valve cover gaskets -MAHLE VS50250A

✅Valley cover gasket -OEM (12558178)
✅Thermostat (ADO-131-156)
✅Knock sensors -OEM (ADO-213-3521)
✅Knock sensor harness.. p/n: 12601822
✅Spark plugs -OEM double plat: 41-962
✅Water pump: 12703898 ✅gasket
Camshaft position sensor -was leaking oil (19420911)
Exhaust manifold gaskets (Felpro: MS 92467)
Coolant vent seals -Dorman: 56390

And a new tie rod on the driver side, which was replaced in 2019.. this was replaced under warranty..

I'm trying to determine if I've covered all the bases.. I wanted to do the intake as well, but just don't have the time to research, and figure out a parts list for the NNBS intake I have sitting here.. (along with a fuel rail..) so that will be later on. If y'all can think of anything I've missed, I would greatly appreciate your feedback.

Here's 222299K, because I'm too damn busy racking up the miles and completely missed the 222222.. :( And, the view from the front window of my temporary residence in the am..
 

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Tonyrodz

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Ok. Parts list for my upcoming upgrades.. This is all due to my original 4L60E with now 224k on it, and a leaking rear main.. I had to do some things "while we're in there"... scope creep...?

✅Performabuilt Lvl 3 transmission
✅2800 stall triple disk billet torque conv -FTI
✅STI Flexplate

✅Rear main seal -complete assy -OEM
✅Complete heads -minus valve covers. PRC 225cc / 62cc chamber
✅Chrome moly pushrods OEM length: 7.4”
✅Head gaskets -OEM
✅Cam -Texas Speed stage 2 Truck: 212/218, .600”/.600”, 112 LSA, 110 ICL
✅lifters -Morel 7717
✅Lifter trays -OEM

✅trunnion / rockers -RPM speed pre-installed trunnions
✅Oil galley diverter barbell

Pushrod length checker

✅Oil pump -Melling hv
✅Timing chain set -Cloyes single roller -hex adjust
✅Timing cover gasket -Mr. Gasket

✅Balancer bolt -ARP

✅ARP head bolts

✅Crank seal
✅cam bolts
✅cam retainer plate
✅cam retainer plate bolts
✅balancer install tool

✅Intake Manifold gasket -OEM

✅Valve cover gaskets

✅Valley cover gasket -OEM

✅Knock sensors
✅Knock sensor harness.. p/n: 12601822
✅Spark plugs -OEM double plat: 41-962
✅Water pump: 12703898 ✅gasket

I'm trying to determine if I've covered all the bases.. I wanted to do the intake as well, but just don't have the time to research, and figure out a parts list for the NNBS intake I have sitting here.. (along with a fuel rail..) so that will be later on. If y'all can think of anything I've missed, I would greatly appreciate your feedback.

Here's 222299K, because I'm too damn busy racking up the miles and completely missed the 222222.. :( And, the view from the front window of my temporary residence in the am..
Beautiful sunrise Sam! How about doing the thermostat? Just in case....
 

swathdiver

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Ok. Parts list for my upcoming upgrades.. This is all due to my original 4L60E with now 224k on it, and a leaking rear main.. I had to do some things "while we're in there"... scope creep...?

✅Oil pump -Melling hv

Be specific on which pump Sam. We have seen a couple of guys put aluminum block pumps on their iron motors and have trouble for whatever reason and visa versa, or so we were told!
 

MassHoe04

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After we bought our house last year, I discovered the seller was in the mob during the '70's.
( He did his time)...... Uh, remember the movie " French Connection"? He was one of them!

He's a nice guy.... Loves Bochy Ball..... Go figure...
No matter how close you think your Bocce ball is... NEVER ask for the tape measure! If he says you are away, then, you are away. Leave it at that.

Also, NEVER ask: "So, uh... Mr. Hatchet or can I call you "Hatch"? What did you do before retirement?"...
 

MassHoe04

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I'm trying to determine if I've covered all the bases.. I wanted to do the intake as well, but just don't have the time to research, and figure out a parts list for the NNBS intake I have sitting here.. (along with a fuel rail..) so that will be later on. If y'all can think of anything I've missed, I would greatly appreciate your feedback.

Here's 222299K, because I'm too damn busy racking up the miles and completely missed the 222222.. :( And, the view from the front window of my temporary residence in the am..
If you're like me, I'd take another photo at 222333. Only had to wait 34 more miles for that one. But, maybe you already passed it...
 

MassHoe04

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I joined the 200k mile club this morning on the way to work...
Needle on the speedo is off by 7 mph and the gas gauge is a little more than 1/8 higher than actual. The PO didn't get the needles in the right spot when the white cluster decals were applied. I use the DIC estimate on miles left in the tank and don't go down to less than 50 miles remaining before filling up.
20220424_072340.jpg
 

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