Painless 60608, Installation Manual

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gauge can be inserted. Most aftermarket gauge manufacturers offer adapters to
adapt their gauge sender so you can thread it into this coolant port.
There are two places that oil pressure senders may be connected to these
engines. Behind the intake manifold is a threaded port, Metric 16 x 1.5 threads.
Depending on what vehicle your engine was donated from, this port might
already have a 0-5 Volt oil pressure sensor in it. This Painless harness does not
have connections for this sensor so you may remove it and with an adapter
screw in your oil pressure gauge sender. Another spot that is common for oil
pressure senders is just above the oil filter. Here you will find an aluminum cap
with two hex head, 8mm bolts holding it to the oil pan. You can remove this cap,
tap it to the threads that match your oil pressure sender and then reinstall it. Just
keep in mind that if you plan to use headers this location for a sender may not be
ideal. Heat can kill a sender quick.

4L60E transmissions require external fluid coolers. The ports on the side of the
transmission usually have quick-connect fittings installed. Most local auto parts
suppliers will offer fittings that adapt these ports to pipe flare fittings. If you plan
to bend your own hard lines this is your best bet. Or, you can also screw in 3/8”
NPT fittings into these ports. Make sure to use Teflon tape on the threads for a
good seal. Fittings are available from many online retailers or your local
hydraulic hose shop that are male 3/8” NPT to male -6AN or whatever your
application may need.
Shifter detents are another thing to consider when transplanting a 4L60E into a
vehicle that was originally manufactured with a 2 or 3 speed transmission.
Companies such as Shiftworks
www.shiftworks.com manufacture shifter
conversion kits to upgrade your factory shifter to operate your late model
transmission. Another option is to completely replace the shifter with an
aftermarket one such as Lokar
www.lokar.com part # FMS64L60EEM.

Throttle cables originally installed to your transplant vehicle may or may not be
long enough to reach the LS1/LS6 throttle body. If it is not long enough or just
doesn’t seem to work properly because it is worn out/frayed then check out Lokar
and their universal LS series throttle cables. These are cut to fit and easy to
install.

Engine accessory and frame clearance always seems to be an issue that comes
up when transplanting a LS1/LS6 engine into any early model vehicle. Usually
the alternator and power steering pumps do not have any clearance issues
associated with them. The factory LS1/LS6 A/C compressor mounts to the
passenger lower side of the engine. In this location, it will not clear most GM
frames. You will either have to notch the frame to create clearance or move the
A/C compressor. Companies such as KWIK Performance
www.kwikperf.com
offer relocation brackets that move the compressor to the upper passenger side
of the engine. Moving the compressor to this location works well with most
transplants. These kits utilize a Sanden style compressor.

Drive shaft length will have to be modified if you are upgrading to a 4L60E from
most 2 & 3 speed automatics or manuals. You should also consider having the