missing smog pump part
Thread Starter
Melting Slicks
Joined: Oct 2010
Posts: 2,276
Likes: 337
From: "ɹǝpunuʍop", Adelaide, South Australia
missing smog pump part
my '72 pump is missing the plastic looking part on the front of the pump behind the pulley.
is it a fan / filter?
does it spin with the shaft or is it fixed to the body?
does anybody sell it as a spare part?
how easily is the pump suppose to spin?
i'm restoring mine to reinstall for the original stock engine look, except i'm blocking the pipes at the manifold end.
was even thinking of making a free spinning false pulley, so no drag on the engine....
is it a fan / filter?
does it spin with the shaft or is it fixed to the body?
does anybody sell it as a spare part?
how easily is the pump suppose to spin?
i'm restoring mine to reinstall for the original stock engine look, except i'm blocking the pipes at the manifold end.
was even thinking of making a free spinning false pulley, so no drag on the engine....
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
The missing piece is a filter and should spin with the fan. Not sure where you could find a spare one other buying a whole pump from a junkyard. It's not worth agonizing over a free wheeling pulley as the OEM system only draws about 1 HP total.
Melting Slicks
Joined: Aug 2001
Posts: 3,050
Likes: 124
From: Wichita KS
Very specific instructions in the Service Manual for replacement - doing otherwise will break the new filter.
Why not try your local Chevy dealer for starters.
Thread Starter
Melting Slicks
Joined: Oct 2010
Posts: 2,276
Likes: 337
From: "ɹǝpunuʍop", Adelaide, South Australia
