Which 5.3 should i build?
04-22-2013, 09:58 PM
#1
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Location: Nebraska
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Which 5.3 should i build? I've got two engines sitting on separate stands. I'm going to be making this a standalone engine with a PSI conversion harness and eventually throwing a turbo on it.
Engine #1-
-2002 5.3
-bought for $300 from local mechanic
-230k miles
-has good oil pressure
-pulled because of leaky rear main
-seems to be pretty clean inside
Engine #2
-1999 5.3
-the engine that got replaced in our silverado due to low oil pressure
-150k miles
-Spun 3rd cam bearing, that's the reason it was getting low oil pressure, it was ran like this for months
Would it be worth it to try and replace cam bearings on #2 or would it be safer to run #1? I don't want to pull the crank on #2 and ruin a rod/main bearing while putting it back together without realizing it. I plan to do ARP head bolts and new head gaskets on either motor.
My brother has a mechanic's shop and wants me to do the cam bearings without pulling the crank. That kind of scares me.
Any input would be greatly appreciated!
Engine #1-
-2002 5.3
-bought for $300 from local mechanic
-230k miles
-has good oil pressure
-pulled because of leaky rear main
-seems to be pretty clean inside
Engine #2
-1999 5.3
-the engine that got replaced in our silverado due to low oil pressure
-150k miles
-Spun 3rd cam bearing, that's the reason it was getting low oil pressure, it was ran like this for months
Would it be worth it to try and replace cam bearings on #2 or would it be safer to run #1? I don't want to pull the crank on #2 and ruin a rod/main bearing while putting it back together without realizing it. I plan to do ARP head bolts and new head gaskets on either motor.
My brother has a mechanic's shop and wants me to do the cam bearings without pulling the crank. That kind of scares me.
Any input would be greatly appreciated!
04-23-2013, 01:31 AM
#4
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If I had two motors, I would run your #1 as it has good oil pressure just replace the rear seal. Shouldn't be to difficult, can't say I have done it before but form what I seen it doesn't seem that difficult.
In short, rebuild #2 for when #1 dies.
In short, rebuild #2 for when #1 dies.