FormulaColy

What color oring should be used on an LM7 block using an LS1 oil pan and pickup tube?

Burken01

iTrader: (88)

Depends on what oil pump? Ls1 I assume?


I copied and pasted this from an old thread

They are color coded for a reason, like stated above, if the pickup tube has a recessed area where the o-ring goes you need the thicker RED o-ring.

GM Oil Pick-Up Tube O-Ring (1st Design)
12557752

BLUE SEAL
Specifics:

* Oil Pick-Up Tube O-Ring ea.
* Chevy/GMC Pick-Up (1999-2000 LS V8) 1st design
* F-Body (1998-2002)
* Cadillac CTS-V (2004-2007)
* Corvette (1997-2008)
* Thickness = 3.55mm (0.140")
ID = 23.60mm (0.930")



GM Oil Pick-Up Tube O-Ring (2nd Design)
12584922

RED SEAL
Specifics:

* Oil Pick-Up Tube O-Ring ea.
* Chevy/GMC Pick-Up (1999-2000 LS V8 engines with 2nd design pick-up tube)
* Trailblazer (2003-2008 With LS V8 engine)
* Hummer H2 (2003-2008)
* Hummer H3 (2008 With LS V8 engine)
* Chevy/GMC Pick-Up (2001-2008 LS V8 engines)
* W- Body (2006-2008 With LS V8 engine - Impala, Lacrosse, Grand Prix)
* Thickness = 4.20mm (0.165")
ID = 20.69mm (0.815")

FormulaColy

using the lm7 oil pump since the motor is already together. its just going on the car to get it running and moving around before the turbo gets here. i will be replacing the oil pump before the build so this is just a momentary thing

Burken01

iTrader: (88)

Sounds like you just need the blue seal above