Quote:

Quote:

"True. Also I've owned a butt load of 72's and none had an EGR valve or air pump"

Some California big blocks were equipped with air pumps in ’72.




Yes but was not standard on all US cars. I've seen air pumps on GM cars as early as 69.




GM started installing AIR pumps in '66 for Cali cars. Starting in '68 I believe ALL open element air cleaner/manual transmission cars came with them.

Last edited by GTX MATT; 10/29/14 03:02 PM.