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Assembling the H/C/I 4.3 v6

21K views 141 replies 25 participants last post by  Nukka  
#1 · (Edited)
going to post a day2day process of assembling the engine

the parts


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paint on the block finished drying


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first things first, cam install


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the cam is from ssm, specs-224/230 .54/.54 114



cam and thrust bearing installed



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balancer was next


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then timing gear


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next up, bearings


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putting the crank in tomarrow
 
#12 ·
if your talking about how long the build will last, hopefully real soon i only have a few weeks to get everything done. yeah i got a vortech v-1 system but i dont plan on putting it on till the engine is broken in a bit.
 
#13 ·
made some progress today. had to check the clearances for the crank sooo

put some bearing guard on first

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cleaned up the 4.2 crank

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one of the holes the machine shop drilled out to balance it


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then placed the crank in the block

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put the bearings on the main caps

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used plasti-gage to check the clearance


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everything checked out and was within tolerances, puttin in the pistons tomarrow
 
#15 ·
Looks like a fun build. I am excited to watch the progression of this.
 
#21 ·
got some more stuff done. yesterday night i started prepping the pistons


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piston rings

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installed connecting rod bearings

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FIRST PISTON IN!!

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2nd


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3rd


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pic after all pistons were installed and rod caps were torqued

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next up is the oil pan baffle, sump tube and timing chain and gears
 
#25 ·
Sweet!!! Look forward to seeing it done. I want to see how it is as far as performance gains? I have heads I am porting for my car and I want to find a 4.2 and build a motor for it.
 
#29 ·
ive been on a roll today on this build


got the timing chain and gears on, next the heads

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here they are, ported polished heads with 3 angle valve job, and supersixmotorsports valve springs and retainers kit

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steel head gaskets

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Heads on!


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pushrods


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rocker assembly

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#41 ·
ive been on a roll today on this build



steel head gaskets

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[/IMG]
You had better check the head gasket installation. It sure looks like you
interchanged the right and left head gaskets. The blocked off water passages
are supposed to be in the front so the water will circulate through the block. If it's wrong as I believe it is here the engine will overheat very badly.
 
#32 · (Edited)
rockers and pushrods on with brand new lifters

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valve covers on


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aaannnd done for the day, tomarow im gonna be working on the oil pump lower intake manifold etc.
 
#33 ·
Are those just the stock valve covers painted silver? That looks pretty sweet and is definately better than paying for other valve covers.