cowl induction air cleaner

[bluecopo]

can anyone tell me when they quit using the flat bottom air cleaner bottom in 69 and started using the one with the rib in the bottom of it appox. month thanks for any help

[William]

This just came up elsewhere. Some early '70 Chevelles still had the flat-bottom air cleaner. Looks like late Sept/Oct '69.

[Mr70]

My 1970,Oct. 24th of 1969 Kansas assembled Chevelle,came with a valley bottom ZL-2 A/C.

[Born30YrsLate]

I had done some looking into this as well and I was told by a person I talked to that the earliest ridge-bottom air cleaner he knows of was on an "untouched" 69 Z-28 built in late August. I say "untouched" as I cannot verify that it is truly untouched.

[camaromb]

I have seen an original ridge bottom cowl air cleaner on a 20k mile '69 Z28 built in Sept. '69. The car also had the '70 style fuel line bracket for the holley carb.

[Steve Shauger]

Regarding the change in the Camaro, I know of a few Aug cars and many Sept 69 built cars with the ridged bottom.