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Edelbrock 4254 Installation Instructions page 3

Ls1/ls2 two piece timing cover for gen iii/iv small block chevy engines

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FIGURE 1
FIGURE 2
Catalog #4254, #4255
Rev. 6/08 - AJ/mc
The notch in the right side of the cover,
the timing mark, and the center of the
cam gear should all be inline when the
cam is in the correct position.
Make a mark on the harmonic balancer at
the point closest to this indicator. You can
then use it later as a reference point to
verify that the crankshaft is in the correct
position.
Page 3 of 3
BEFORE REMOVING THE CAMSHAFT
Loosen this bolt and lift the sensor, failure to
do so can damage the sensor. It is not
necessary to remove the sensor altogether.
(Gen III engines ONLY)
©2008 Edelbrock Corporation
Brochure #63-4254

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