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buhogg
03-08-2004, 11:23 AM
I have a 70 carb and intake off of a 70 225,the numbers on the carb are 7040240,is this a 800cfm or 750? thanks
LARRY70GS
03-08-2004, 02:17 PM
750 CFM, the 800's started in 1971 on big block carburetors only.
RAbarrett
03-26-2004, 11:00 AM
See my previous post on identifying these carbs. It will help regardless of the carb number. Ray
Smartin
03-26-2004, 04:15 PM
Check this thread out: There is a picture posted by BuickStreet (Bill) that gives you an example of what to look for on an 800cfm qjet.

http://www.v8buick.com/showthread.php?s=&threadid=15044&highlight=800+bump