This is the build web page for
ERE383 #6 (Ellwein
Racing Engines LT1-383 #6). It will be built around the free OHIO CRANK that
I gave away as an incentive to purchase this
short block. The rotating assembly will be all forged with
the "Ohio Crank" 4340 crank, Lunati I-beam Pro Mod rods,
pistons and Eagle splayed main caps at 2, 3 & 4 with ARP main
The block, fully machined and with Eagle splayed main caps with ARP Studs.
The block was align bored very slightly, (see the material removed
from the oil pan rail).
Here is the balance card from McKeown Motorsports
Since this crank is the "lite" version it has less
material in the counterweights. The balance machine wanted
weight added where there exist "no" counterweight.
So Mark McKeown welded material onto the counterweight end as
needed. This was an extra effort that I very much appreciate.
Rod prep. (waiting for paint to dry)
I cleaned all 8 Lunati Pro Mod rods and tested piston pin fit by
Now to the long process of measuring rod bearing clearance. I
set the micrometer to 2.1000 and zero out the dial-bore gauge.
Re-check it every now and then because temperature changes and body
heat really screw things up.
Get the bearings installed and torque to .0045"
stretch. See how far off the dial bore gauge is off from zero.
And the results are from .0020 to .0025"
That's what I hope for. The bearings are the big money Speed Pro
Duroshield coated C8-7100CH
Now I'm assembling the rod-piston. Look at that Mahle
piston. It's a work of art.
I used my new pro ring file machine for the 1st time. Normally
this job takes 4 hours, (yes I'm slow). Now it's 1 hour taking
Now for something completely different: This is a new brand of
LT1 cylinder head, the Dart Pro-1 (LT1). The chambers are 60cc
and the intake runners are 180cc. This 383 will be a good test
of their performance potential.
Dart head is cleaned with brake-clean.
Using ARP 12pt head bolts, (big money).
Quick test fit. Looks by eye-ball that I may have to shim the
rocker stands up-higher.
fuzzy photo of new Crane 109831 (GM846) cam.
Cloyes Hex-A-Jjust timing set cam button ground shorter so as not to
interfere with Opti-spark.
Broad photo of the Cloyes Hex-A-Just
M99HVS oil pump and Mr. Gasket oil pump stud.
New stock GM hydraulic lifters.
Dart head intake runner close-up.
Red magic marker on valve tips.
This is the rocker tip to valve tip location with no shims under the
shaft rocker stands.
This is ERE-383 #6 as of 10-21-07
Assembly raw detail:
This is the "free" crankshaft, OHIO
CRANK brand, 4340 forged steel 3.75" stroke. It's
part number 43503750LT (lite). The oil holes are beautifully
contoured/chamfered. It has all of the rod journals rifle
January 2nd, 2007
The rotating assembly has just returned from the balanced shop and I
set the parts out for a photo shoot.. I'm working with McKeown Motorsports Engineering now and
they performed the expert balance work. They also have been
helping me engineer custom ROSS pistons for a 1200hp 383LT1 project
and they will be assisting in the design of my own custom ROSS
flat-top and D-dish piston for street/strip, nitrous and mild blower
January 14th 2007
Beginning of short block assembly while waiting for heads/cam:
I have the rotating assembly and fully machined block so now lets
get the block painted with POR-15. This is the base silver
And now she's POR engine black.
Installing the rear cam bearing. These are the nice race
coated Dura-Bond CHP-8T
You can see the cam bearings in this photo
And pistons/rods. BAM! A shortblock.
The pistons are 0.010" in the hole. I selected this
0.026" thick Mr. Gasket head gasket.
Right side heads on.
Another item being tested is a set of Probe shaft
rockers. These are the rocker stands.
The Probe rockers look to be very high quality.
Sorry for the fuzzy photo. Is my camera on it's last
leg? I hope not.
Ground-off cam bolts so that Opti-spark fits.
Lucky me. Intake centerline is 107 dead nuts on. This is
the GM 846 cam. The Hex-A-Just was set on straight-up, (no
retard, no advance)
Stock LT1 windage tray is snipped a little bit to clear around the
oil pump body. Many have run their motor without this windage
tray and smoked their bearings only to blame it on a HV oil
pump. Fact is, HV pumps will not pump a sump empty any sooner
than a stock volume oil pumps.
Probe shaft rockers added and adjustable pushrod used to find proper
length. 7.050" is the initial measurement.
The mark is hard to see in the photo but it's right in the
center. With shaft rocker the proper geometry is only
determined by shims or no shims under the rocker stands. The
pushrods have no effect on rocker tip to valve tip location.
The pushrods need to be the proper length to fit in the lash
All rockers and pushrods installed and lifter pre-load at 1/2 to 3/4
turn past zero. Pre-lube drill spins at low rpm
(40psig). This also verifies that oil moves up the pushrods
and onto the rockers and springs.