kboldin":433f48v1 said:
To give everyone a better idea of the setup, I've uploaded a pic. I believe these are 1904's.
here's .$,02 more:
... well (AFAIK), the center carb in the pic looks to be a 1904 used on Dodge, Ford, IH, NAsh/Rambler cars and trucks and others for @ 25 years, the outers look to be 1908's ( 1909's?) with similar specs but squarish airhorn/choke used in 60/61 Comet for example.
1904/08 series has either 'big' or 'small' venturi's depending on OEM application/CFM needs and match the Offy adapter's 'big' inner port and 'small' outers (1.00/1.10/1.20). The CFM range of 1904's varies widely but can be coarsely divided by throat size (1-7/16 vs 1-11/16). YF's also have a wide range of applications with different mfg's. Exact OEM specs are determined by the "list number" on carb side but of questionable worth. The glass bowl types are visually most desirable and typically most trouble, glass bowls are available and
can replace cast bowl but the clips and bale often mangled or missing. Lately the cork&rubber gaskets used for my glass bowls' has been disintegrating causing leaks probably due to modern gas formula.
1904's
can be good performers and YF's
probably will perform well if in decent shape. 1904's individually are notorious for warpage, worn out mechanicals and swapped internals ( bad cores sold online as "used"?). 1904's will provide hours of entertainment getting vertical bowl to seal, testing float levels under pressure and drivability/performance. I'm a fan of the 1904 but caution that actual drive-testing each one individually is the only method I've found useful to confirm
performance before trying to get three to work
together... The progressive OFFY linkage, ( smartly versatile ) uses primary/center "big" carb for idle and cruise so testing for drivability with outers' blocked is highly recommended.
"small"
. .
.
.
"big" :
.
YF's:
I have collected "a few" over time to mix and match to optimize performance/drivability and find that grimey dirty old truck type often runs better than an expensive NIB shiny one. 8)
.
have
3X1 fun