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stllookn · 01-05-2009, 04:02 PM

Casting number 704xxxx according to my Rochester book. 4th digit will be 1 or 2 for last year and 6th digit will be 0,1 or 2 for Chevrolet. They call these casting numbers but they are actually stamped into the side of the carb.

01-05-2009, 04:02 PM	#2
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: Rochester Quadrajet Carb Numbers Casting number 704xxxx according to my Rochester book. 4th digit will be 1 or 2 for last year and 6th digit will be 0,1 or 2 for Chevrolet. They call these casting numbers but they are actually stamped into the side of the carb. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary) Last edited by stllookn; 01-05-2009 at 04:04 PM.