Autolite C8AF-AC Carburator

[chris401]

It has 1.42 primaries 1.55 secondarys. Is this an emissions carb? Anyone know the cfm? I am guessing around 650 to 675.
Thanks

[bsprowl]

My '68 shop manual doesn't include it but it has two others with similar throttle bores that flow 446 CFM.

[chris401]

The smaller ones are what I really want but this man is wanting to trade some parts I wont use anytime soon.
Thanks

[chris401]

Copied from the Mustangtek site. What does open emissions mean? Either?
Full link= http://www.mustangtek.com/4300/4300.html

C8AF-AC
 
Unconfirmed Application. Information may or may not be complete or accurate68 390 Ford, Thunderbird (w/AT, open emission)

Unconfirmed Application. Information may or may not be complete or accurate68 428 Ford(exc/PC) (w/AT, open emission)
 
4v

Auto

Ford Service Part Number ID C8AF-9510-AT
 
 

[machoneman]

If your post over on Ed's forum draws a blank, try VMF:

http://forums.vintage-mustang.com/concours-forum/601653-autolite-1100-decoding.html

[chris401]

Thanks for the guides. The looks like the AC means automatic for 68 390 and non cj 428. Is "open emissions" the PVC hose port in the back of carb?

[machoneman]

CFM data here:

http://classicinlines.com/autolitecarbs.asp

http://mustangtimes.net/33-4/pg52-54.pdf

Not sure what the open emissions really means. 

[machoneman]

Found it! Oddly, it's also from MustangTek's database of PDF'ed documents.

http://www.mustangtek.com/Library6/PDF/ShopTips6-1.pdf

It seems "open" is pre-Thermactor air pump or merely a simple open breather and a PCV system. Closed = Thermactor, air pump, later an EGR valve, etc. Is that how you read it?     

[chris401]

Found it! Oddly, it's also from MustangTek's database of PDF'ed documents.

http://www.mustangtek.com/Library6/PDF/ShopTips6-1.pdf

It seems "open" is pre-Thermactor air pump or merely a simple open breather and a PCV system. Closed = Thermactor, air pump, later an EGR valve, etc. Is that how you read it?   

I understood open emission the same. Thanks for the info Bob. I also saw a link on fordfe dot com. Cant post link from phone, it said that this carb was a 650. Givin the venturie sizes that makes sense as Holley 750 has 1.72's.

Corrected CFM