Center squirter pump cams

[TheNovaMan]

My pair of 660s has pump cams marked "644" and "LSI" and they look brown to me. They have two holes and don't seem to match any of the currently available pump cams. Are these specific to 660s, or are they non-Holley aftermarket parts? What pump cams do you guys have on your center squirters?



In case anyone searches this in the future, here are some potentially helpful keywords: Holley 660 center squirter carburetor accelerator pump cam

[Glenn70]

NovaMan,
Dont know if this helps but heres a couple of pics from 2 of my 660's, both cams are the same and appear to be original. The 660's are 4224-S models.

Glenn
http://i1219.photobucket.com/albums/dd423/Glennls7/SANY0768.jpg[/img]

http://i1219.photobucket.com/albums/dd423/Glennls7/SANY0767.jpg[/img]

[TheNovaMan]

Here are a couple not-as-good pics of mine:

http://i371.photobucket.com/albums/oo154/TheNovaMan/2012-09-09_00-03-24_376.jpg

http://i371.photobucket.com/albums/oo154/TheNovaMan/2012-09-09_00-04-46_740.jpg

Here's what I've managed to dope out from catalogs and the internet. Holley doesn't have separate part numbers for their pump cams, except for the yellow and white ones for 4500s. However, Quick Fuel numbers and sells cams individually, and I think their parts are actually Holley parts in many cases. They have a brown cam that looks like it has the same profile as mine, but has only one screw hole. Its part number is 41-664 (remember that 664 is embossed on my cams), and it seems to be a brown cam for QFX/4500 carbs that's extra wide "to provide better pump arm engagement." So I think what I have is the brown cam profile, just with a wider lobe. Here's Quick Fuel's page on it: http://www.quickfueltechnology.com/accel...4500-style.html (http://www.quickfueltechnology.com/accelerator-pump-parts/brown-wide-pump-cam-qfx-and-4500-style.html)