Well time to Start it.

[ChrisGMC]

Hey guys,

Well it is time to get this project going. I was looking on CL for tools that people are selling. Can never have to many. came across an ad for a engine stand for 50, but must take the motor attached. The guy sent me some and it was a 5.3. Not sure the year, I know it is a DBW, with 862 heads. I went over there to check it out, I would not turn it over by hand, but it has all the injectors and sensors and coil packs, So I offered him 40, told him i was going to have to go home and unload the motor and take it to the scrap yard. He took it.

Well Now the bad news, still cant turn it over. Started to take it apart, this is probably the most neglected motor in the US. Took the pan off, there is so much sludge in the bottom on the pan. only 1 lifter came out, the rest can only come out half way. SO i have to figure that out. And I have loaded up the cylinders with some PB Blaster going to check to see if I can turn it over in the morning. Here are some pics.




$40 Motor and Stand



Sludge

[NITROUS]

Well, for $40 you can't beat the price. Hope the lower end is still good so you don't have to scrap the block. Good luck

Here's your head info if you don't have it:
Casting Number 706 and 862
Head: 1999+ 4.8L / 5.3 Liter Truck
Material: Aluminimum
Part Number:
12559862
12561706
Combustion Chamber Volume: 61.15cc
Compression Ratio: 9.5:1
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 1.89 inches
Exhaust Valve Diameter: 1.55 inches

Stock Head Flow Numbers
Chamber 61.15 cc----0.100--0.200--0.300-- 0.400--0.500---0.550---0.600
Intake 200 cc----------63 ---128----179-----210----218----221-----226
Exhaust 70 cc----------54 -- 93 ----121----145-----163----168----174


What you need to know:
These small combustion chamber truck heads offer no advantage over an LS1 head except the smaller combustion chamber. This along with milling of the deck surface will allow a slightly higher compression ratio to be achieved. Because of the smaller intake valve installed in these heads a valve upgrade is practically mandatory.

[farmtruc]

check bearings, rings, any wear. swap lifters and clean it the best you can.
use all oem gaskets for no leaks.
probably a new oil pump.

you'll be surprised how much these engines can take.

good luck on the build,

[ChrisGMC]

Well rod bearings look great, 2 main bearings are shot. Going to drop the block, crank, pistons and rods off at a machine shop. Is there any machine shop I should stay away from in San Antonio?

[ChrisGMC]

Don't think I can polish this out.


This is the worse looking cylinder

[ChrisGMC]

Decided to go clean out the sludge in the oil pan, should just throw it away and get another one. LOL...