| 4200 Rear Sump Oil Pan |
Our 4200 Rear Sump Oil Pan make it easy to swap this potent inline 6
into a wide variety of chassis.
The oil pan is an integral part of the 4200 block, we kept the wall
thicknesses no thinner than what GM used or in some areas the pan is
thicker to allow better flow during casting.
Torque converter bolt access is maintained through the rear flange.
The drain plug hole is right on the pan floor so when you drain the oil very
little is left - just what is clinging to the material surface. This really helps
keep your oil clean and there is nowhere for sludge to build up.
The pan is thick enough to allow tack welding in oil control baffles for
competitive use.
Use a modified Colorado 3500/3700 oil pickup.
Notes:
The pan has a number of features that need to be finished by the
installer, this is done to allow maximum flexibility.
Oil dipstick mount— not drilled to allow customization to clear header
tubes etc.
Turbo oil drain Boss— suitable for 1/2 NPT return— not drilled.
Oil temperature sensor boss—not drilled
A/C compressor boss is present in as cast condition.
Aux. boss behind the A/C boss is there to allow attachments of non-
standard items such as a dry sump pump etc.
Pan dimensions : Sump is 6.8” deep from the pan rail to the bottom of
sump
Front of the sump is 11.3 “ from the transmission flange
The front section of the pan is 2 5/8" deep from the flange to the bottom
outside of the pan.
Holds 4.5 US quarts (4.4 L).
You will need a modified 3500/3700 oil pump pick up extended to sit mid-
sump. Not supplied with the pan.
The original oil dipstick hole needs to be blocked off—a 1/8 NPT plug
works well.
Use Permatex “Right Stuff” to seal the pan to the block.
into a wide variety of chassis.
The oil pan is an integral part of the 4200 block, we kept the wall
thicknesses no thinner than what GM used or in some areas the pan is
thicker to allow better flow during casting.
Torque converter bolt access is maintained through the rear flange.
The drain plug hole is right on the pan floor so when you drain the oil very
little is left - just what is clinging to the material surface. This really helps
keep your oil clean and there is nowhere for sludge to build up.
The pan is thick enough to allow tack welding in oil control baffles for
competitive use.
Use a modified Colorado 3500/3700 oil pickup.
Notes:
The pan has a number of features that need to be finished by the
installer, this is done to allow maximum flexibility.
Oil dipstick mount— not drilled to allow customization to clear header
tubes etc.
Turbo oil drain Boss— suitable for 1/2 NPT return— not drilled.
Oil temperature sensor boss—not drilled
A/C compressor boss is present in as cast condition.
Aux. boss behind the A/C boss is there to allow attachments of non-
standard items such as a dry sump pump etc.
Pan dimensions : Sump is 6.8” deep from the pan rail to the bottom of
sump
Front of the sump is 11.3 “ from the transmission flange
The front section of the pan is 2 5/8" deep from the flange to the bottom
outside of the pan.
Holds 4.5 US quarts (4.4 L).
You will need a modified 3500/3700 oil pump pick up extended to sit mid-
sump. Not supplied with the pan.
The original oil dipstick hole needs to be blocked off—a 1/8 NPT plug
works well.
Use Permatex “Right Stuff” to seal the pan to the block.
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In case you were wondering -
yes the product pictures
above were taken at
Bonneville Salt Flats
yes the product pictures
above were taken at
Bonneville Salt Flats
Comparison pictures of the rear sump
pan and the GM pan.
pan and the GM pan.
GM PAN >>>
Rear Sump pan >>>
Rear Sump pan >>>