![](1236t.jpg)
What an awesome shop! This engine is an already built
LT1-396.
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![](1239t.jpg)
Motor arrives in Maryland without a scratch. We'll look deeper
into the motor and see what can be left alone and what might need an
upgrade.
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![](1339t.jpg)
An Ellwein/Stef's oil pan is always a good idea.
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![](1340t.jpg)
Since we have a 3.875" stroke motor I think a pan with stroker
notches might be a good idea.
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![](1341t.jpg)
The Stef's pan is build to my specification with an oil level sensor
bung and front notch and room to fit a Titan gerotor oil pump.
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![](1342t.jpg)
Check out that notch in the front. That is required when the
motor lives in an Impala SS due to the steering center-link.
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![](1343tn.jpg)
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![](1344t.jpg)
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quite a bit of cooked on oil but clean otherwise.
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![](1347t.jpg)
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![](1350t.jpg)
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![](1351t.jpg)
GM LT4 heads, (unported)
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![](1353t.jpg)
Looks like SRP -16cc D-dish pistons
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Bone stock main caps.
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![](1357t.jpg)
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![](1358t.jpg)
A very nice Callies USA crankshaft.
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![](1361t.jpg)
Connecting rods of unknown brand. They look a bit like Oliver
billet, (but they are not).
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![](1362t.jpg)
Main bearings are in bad shape. All worn down to copper.
The rod bearings were all out of shape too.
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![](1363t.jpg)
3.875" stroke.
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The cylinder heads
will be shipped off to Advanced Induction.
The block will be set aside and we have a fresh block on order from
Chad at Golen Engines. |
![](a1t.jpg)
Freshly machined block
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![](a2t.jpg)
Main caps a little rusty on the non-machine surfaces. All will
receive a buff and a good POR-15 paint job
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![](a3t.jpg)
Here is the Callies crankshaft on the balance machine.
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![](c1t.jpg)
Advanced Induction ported LT4 intake manifold. I like how they
remove the core plugs so that they can clean it and I can verify that
it is in fact clean.
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![](c3t.jpg)
Powder coated Red
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![](c5t.jpg)
The block is a bit "more" red than the GM LT4 red but a
pretty good match.
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![](c7t.jpg)
Custom piston from Diamond. Notice the pin boss area is
polished.
Piston is 406.5g, Pin 119.4g, rings 34.8g, wire lock 2.7g
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![](c7at.jpg)
I weigh the parts individually and as a unit.
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![](c7bt.jpg)
563.4g added up individually and 563.0 as a unit.
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While the Crankshaft is at the balance shop I will clean the block,
add freeze plugs, install oil galley plugs, install cam bearings and
file fit the piston rings.
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![](2751t.jpg)
Here the block is posing with the freshly installed freeze plugs.
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![](2754t.jpg)
Then cam bearings
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![](2755t.jpg)
Notice that the oil galley plugs are threaded.
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![](2756t.jpg)
This is the oil galley plug that goes under the rear main cap.
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![](2763t.jpg)
One method I like to use to measure piston to cylinder wall clearance
is via feeler gauge. Here I have .004" and the recommended
clearance from Diamond is .0045"
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![](2764t.jpg)
Ready for piston ring file fitting.
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![](2765t.jpg)
Top ring at .024" (just in case the motor gets a small hit of
nitrous in the future.).
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![](2770t.jpg)
2nd ring at .0020". (Mahle and Total Seal both recommend the 2nd
ring gap to be smaller than the 1st ring gap. This is a change
from the past.
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![](2773t.jpg)
The pistons are "L" and "R". This helps me
organize and acts as a 2nd check to the proper orientation.
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![](2775t.jpg)
All rods and pistons assembled, (except rod #4 which is at the machine
shop).
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![](2777t.jpg)
Picking up the crankshaft tomorrow. Soon you will see final
assembly.
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![](2782t.jpg)
Main bearing clearance check. Mostly a mix of .001 under and
standard in order to make the bearing clearance slightly tight.
.0017" to .0020"
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![](2785t.jpg)
Notice that I enlarged the oil hole in the bearing to match the oil
hole in the block.
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![](2786t.jpg)
Thrust is .008"
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![](2790t.jpg)
Rod bearing clearances set with a mix of .001 and standard bearing
half shells. Generally .017" to .0022"
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![](2799t.jpg)
This is a 4.035" piston. I don't have a tapered ring
compressor for 4.035" but I do have this super duper tool and
it's working quite well.
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![](2800t.jpg)
Pistons are .003" out of the hole
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![](2803t.jpg)
Advanced Induction camshaft.
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![](2804t.jpg)
Single roller timing set from Cloyes set on "0"
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![](2805t.jpg)
1st check 103.5 degree intake center. 2nd check 104 degree
intake center. This is with crank sprocket on the "0"
position.
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![](2806t.jpg)
Titan gerotor oil pump installed. Modified stock windage tray
installed.
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![](2807t.jpg)
All rod bolts torqued to 65 ft-lb. Rod side clearance is .018"
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Last look at the chambers of the Ai CNC ported LT4 cylinder heads.
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![](2812t.jpg)
Very nicely stress relieved and finished valve springs.
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ARP head bolts cleaned and loaded with thread sealant.
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![](2816t.jpg)
Cometic MLS head gasket.
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![](2819t.jpg)
Crower shaft rocker sits right on the valve tip. Nicely
centered.
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![](2820t.jpg)
Pushrod length check. 7.2"
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![](2821t.jpg)
You can just make out the mark. Right in the center of the
valve.
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![](3242t.jpg)
New oil pan from Stef's. The other one had to be sent back for
repair. Then it was lost by UPS. (1st time UPS messed up a
shipment for me). Now this new one has a billet rail.
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![](3243t.jpg)
....And we ordered it with an 1/8" NPT bung for oil temp sender.
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![](3245t.jpg)
Final view of the bottom end. I only used RTV on the ends of the
oil pan gasket.
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![](3246t.jpg)
The firm billet pan rail compresses the oil pan gasket very nicely.
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![](3247t.jpg)
I am hoping that the oil pan does not seep oil when the motor is
installed and running. It looks to be a very good seal by eye
and feel. The pan fits very well and there are no crank or rod
bolt clearance issues.
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![](3248t.jpg)
One head had to go to the machine shop to have the valve cover
hold-down bolt boss fixed.
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![](3249t.jpg)
Now the head is reinstalled and ready for the shaft rockers.
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![](3250t.jpg)
Shaft rockers on.
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LT4 head gasket on and ready for intake manifold.
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Before the intake manifold goes on I will do an oil system test.
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![](3253t.jpg)
2500rpm drill gives 58psig with 30W oil.
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All lifters pumped up and sending oil up the pushrod to the rocker.
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GM LT4 intake manifold gasket #1236777
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![](3257t.jpg)
A nice thick bead of Right Stuff RTV
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![](3275t.jpg)
Old (non-LT1) thermostat on the left and new Hypertec 160T-stat on the
right.
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![](3276t.jpg)
I drill holes in the T-stat if the motor has an electric water
pump. That allows for bleeding of the coolant system without
running the engine.
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![](3277t.jpg)
Taped up and ready for shipping.
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![](3279t.jpg)
Extra long tranny dowel pin transferred from old block to new block
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![](3347t.jpg)
Wrapped up tightly and ready for R+L
Carriers
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![](001t.jpg)
Nice wire loom and oil line set up.
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Notice the Meziere starter and looms
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Stainless oil fittings.
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Custom oil line support
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Very clean and well made remote oil cooler
lines.
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