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My Turbo LSX Z31 Builld


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#41 nismo kid

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Posted 04 June 2016 - 06:55 PM

Replaced the cam bearings

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#42 nismo kid

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Posted 04 June 2016 - 06:55 PM

Then had my engine crossmembervalve coverstiming cover, oil pan, & a few other things powder coated.

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#43 nismo kid

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Posted 04 June 2016 - 06:57 PM

Purchased all these goodies for the 4.8
LJMS Stage 1 4.8 Turbo Cam
BTR 660 Dual Valve Springs with Titanium Retainers 
Comp 7.400 Hardened Push Rods
Straub Technologies Trunnion Kit
ARP Head Studs 
ARP Stainless Steel Valve Cover Bolts
ARP Stainless Steel Water Pump Bolts
ARP Stainless Steel Intake Manifold Bolts
ARP Stainless Steel Oil Pan Bolts
ARP Stainless Steel Timing Cover Bolts
ARP Balancer Bolt
ARP Camshaft Bolts
Summit 25% Underdrive Balancer 
Improved Racing Oil Pan Baffle
Meling 10295 High Oil Pressure Pump
Hinson Racing C7R Timing Chain
Billet EGR block Off Plate
LS7 Lifters
New Lifter Trays
GM Performance 12498544 Head Gasket
Dorman Drain Plug 65221(Deletes oil level sensor
New GM 12589016 Camshaft Retainer
New Oil & Coolant Plugs
New Cylinder Head Dowels
Dorman 635-518 Rear Main Seal Cover Set
New Gaskets for the entire engine
MS3 Gold Box
Siemens Deka 80 LB/HR Fuel Injectors
3 Bar Map sensor
Fast Fuel Rails(Scored these for 50$)
12.9 grade Rocker Arm Bolts

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#44 nismo kid

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Posted 04 June 2016 - 06:58 PM

Now that I have my assortment of parts it was time for assembly.

1st I cleaned & began to lap all the valves. After lapping a few I found a couple pits on the seat of the valve. So I decided to get valve job.

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#45 nismo kid

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Posted 04 June 2016 - 06:59 PM

After that I installed the valves & Premium BTR 660 valve spring kit. Then set the cylinder heads off to the side.

 
 

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#46 nismo kid

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Posted 04 June 2016 - 07:02 PM

Next up was installing my Straub Technologies Trunnion kit into my factory rocker arms. Thanks to thesummit racing tool it was a breeze. I also set those to the side.

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#47 nismo kid

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Posted 04 June 2016 - 07:03 PM

I grabbed my 4.8 cleaned all the bolt holes in the block. Then replaced all the oil & coolant plugs. After all that I proceeded installing the LJMS Stage 1 cam followed by a new camshaft retainer.

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#48 nismo kid

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Posted 04 June 2016 - 07:03 PM

C7R Timing Chain vs the OEM

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#49 nismo kid

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Posted 04 June 2016 - 07:04 PM

C7R timing chain installed

C7R timing chain installed

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#50 nismo kid

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Posted 04 June 2016 - 07:04 PM

Degreed the cam

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#51 nismo kid

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Posted 04 June 2016 - 07:05 PM

Tossed in the LS7 lifters & trays.

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#52 nismo kid

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Posted 04 June 2016 - 07:06 PM

Installed cylinder head dowels. Lightly lubed the threaded sections of the ARP Head Stud with ARP lube. Then threaded them into the block hand tight.

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#53 nismo kid

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Posted 04 June 2016 - 07:06 PM

After that I coated my head gaskets with copper spray & slid them over the studs.

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#54 nismo kid

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Posted 04 June 2016 - 07:07 PM

Carefully lowered the cylinder heads down over the head studs.After that I lightly applied ARP lube to the washer & threads of the nuts. Then I installed the washers & threaded the nuts down hand tight. Following GM's recommended torque sequence I tightened the 7/16" nuts in 3 equal steps to 80 ft lbs. The 5/16" nuts were torqued to 25 ft lbs.

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#55 nismo kid

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Posted 04 June 2016 - 07:08 PM

Continuing on I tossed in my pushrods & set the rockers in their respected places. With the engine in the number one firing position, I tightened exhaust valve rocker arm bolts 1, 2, 7, and 8 to 22 ft lbs. Then I tightened intake valve rocker arm bolts 1, 3, 4, and 5 to 22 ft lbs. 
I rotated the crankshaft 360° & tightened exhaust valve rocker arm bolts 3, 4, 5, and 6 to 22 ft lbs. Last but not least I tightened intake valve rocker arm bolts 2, 6, 7, and 8 to 22 ft lbs.

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#56 nismo kid

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Posted 04 June 2016 - 07:09 PM

After a few rotations I double checked all the rocker arm bolts with my torque wrench. Now that made sure I had no binding issues it was time to install my valve covers & Meling oil pump. I installed the Meling oil pump following their directions. Using 3 .0025 feeler gauges equally spaced between each rotor. Plus 3 more equally spaced .0025 feeler gauges between the largest rotor & pump casing. Then torqued the pump bolts to 18 ft lbs. Then secured pump cover using supplied bolts with a bit Loctite 242.

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#57 nismo kid

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Posted 04 June 2016 - 07:09 PM

Next I installed my timing & rear main seal covers using some Alignit tools. These things come in handy. After the covers were aligned I installed the seals. 

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#58 nismo kid

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Posted 04 June 2016 - 07:10 PM

Moving on I installed the Improved Racing oil pan baffle into my F-Body oil pan. It's a shame that something so nice won't be seen.I also deleted my oil level sensor but using Dorman Drain Plug 65221.

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#59 nismo kid

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Posted 04 June 2016 - 07:11 PM

The balancer started looking lonely on my work bench so I slapped it on followed by the ARP Balancer Bolt.Installed the F-Body windage tray & pick up tube. Rotated the engine a few more times to check for clearance. Then tossed the oil pan on.

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#60 nismo kid

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Posted 04 June 2016 - 07:12 PM

To finish up the 4.8 I installed the water pump & valley cover. 

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