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FE Power Forums => FE Technical Forum => Topic started by: chris401 on February 13, 2014, 08:12:27 PM

Title: Autolite C8AF-AC Carburator
Post by: chris401 on February 13, 2014, 08:12:27 PM

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

Title: Re: Autolite C8AF-AC Carburator
Post by: bsprowl on February 13, 2014, 09:25:32 PM

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

Title: Re: Autolite C8AF-AC Carburator
Post by: chris401 on February 13, 2014, 09:30:41 PM

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

Title: Re: Autolite C8AF-AC Carburator
Post by: chris401 on February 13, 2014, 09:38:11 PM

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
 
 

Title: Re: Autolite C8AF-AC Carburator
Post by: machoneman on February 13, 2014, 09:50:47 PM

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

Title: Re: Autolite C8AF-AC Carburator
Post by: chris401 on February 13, 2014, 10:34:51 PM

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?

Title: Re: Autolite C8AF-AC Carburator
Post by: machoneman on February 14, 2014, 09:17:43 AM

CFM data here:

http://classicinlines.com/autolitecarbs.asp

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

Not sure what the open emissions really means. 

Title: Re: Autolite C8AF-AC Carburator
Post by: machoneman on February 14, 2014, 09:30:22 AM

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?     

Title: Re: Autolite C8AF-AC Carburator
Post by: chris401 on February 15, 2014, 10:03:36 AM

Quote from: machoneman on February 14, 2014, 09:30:22 AM

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