Carter YF vs Holley 1904
- Thread starter sixbangr
- Start date
Hi sixbanger and welcome to the Ford Six forum! I think you would be very happy with the boost in power with the bigger Carter YF if you can get it adapted to the throdle linkage or use a cable type. Best of luck
Neither. If you can find one, the Autolite 1101 is a 1.29 Venturi carb that out performs any Holley 1904 or 1.315 Carter YF or YFA. You have to make sure the throttle blade clears the intake hole in the manifold.
The anti-trust war between FoMoCo which owns Motorcraft, and the formerly Presolite, who were owners of Autolite before Ford went for a purchase....that patent dispute between 1961 to 1970 had far reaching issues for the carb production, not just spark plugs.
"https://www.justice.gov/atr/case-document/338876"
The case prevented Ford owning all of the 1 bbl Annular Discharge technology. So the Holley 1940 was used as an Autolite 1940 and then Motorcraft 1940 replacement for the Autolite 1101 on the 240 and 300 Big Six, and then some of the early 250 1969 sixes.
The two year only 1bbl 1101 uses a Ford F jet, annular Discharge Venturi, and it's not a Pony Carbs rip off. The various sizes1904/1908 Holley's, always a work in progress, the Holley 1940, never a good carb as it had different venturis and and many changes from 1969 to 1975. The Carter YF and YFA, a metering rod carb, so it administers fuel in small droplets, so it's a pure economy carb.
If you can find an Autolite 1101, or if you can service the plastic Venturi which they had, you'll love it with a two diaphragm ignition.
1101= Autolite Non Load-a-matic 1bbl carb. The Autolite 1100, Load-a-matic, and not the same big Venturi as the 1101.
If you can't track down an 1101, then use a Carter YFA with its bolt holes slotted, and open up the intake manifold to clear the 1.687 inch throttle.
The anti-trust war between FoMoCo which owns Motorcraft, and the formerly Presolite, who were owners of Autolite before Ford went for a purchase....that patent dispute between 1961 to 1970 had far reaching issues for the carb production, not just spark plugs.
"https://www.justice.gov/atr/case-document/338876"
The case prevented Ford owning all of the 1 bbl Annular Discharge technology. So the Holley 1940 was used as an Autolite 1940 and then Motorcraft 1940 replacement for the Autolite 1101 on the 240 and 300 Big Six, and then some of the early 250 1969 sixes.
The two year only 1bbl 1101 uses a Ford F jet, annular Discharge Venturi, and it's not a Pony Carbs rip off. The various sizes1904/1908 Holley's, always a work in progress, the Holley 1940, never a good carb as it had different venturis and and many changes from 1969 to 1975. The Carter YF and YFA, a metering rod carb, so it administers fuel in small droplets, so it's a pure economy carb.
If you can find an Autolite 1101, or if you can service the plastic Venturi which they had, you'll love it with a two diaphragm ignition.
1101= Autolite Non Load-a-matic 1bbl carb. The Autolite 1100, Load-a-matic, and not the same big Venturi as the 1101.
If you can't track down an 1101, then use a Carter YFA with its bolt holes slotted, and open up the intake manifold to clear the 1.687 inch throttle.
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A 1904 would be more 'traditiiional looking' although Carter YF's are also have a legacy . For practical use , the Carter is my preference. I use a Maverick 170 Carter YF as an 'initial startup' carb on projects due to it's predictable performance.
71 and older YF type
1904's have many fans but are fairly primitive with fuel bowl vent directly 'open to atmosphere' and often leaky. Huge varied applications and CFM ratings, 1904 carb base bore will be @ 1-7/16 for smaller / car and CID use with larger @1-9/16 bore for 'big block' sixes, trucks... Three 1904's are on the 250 Comet and spares as needed are kept ready. The 'glass bowl' Holleys are valued, swapped and worn parts are typical with used old carbs.
1904/1908 type
,
odd one
have fun
71 and older YF type
1904's have many fans but are fairly primitive with fuel bowl vent directly 'open to atmosphere' and often leaky. Huge varied applications and CFM ratings, 1904 carb base bore will be @ 1-7/16 for smaller / car and CID use with larger @1-9/16 bore for 'big block' sixes, trucks... Three 1904's are on the 250 Comet and spares as needed are kept ready. The 'glass bowl' Holleys are valued, swapped and worn parts are typical with used old carbs.
1904/1908 type
,odd one
have fun
