I guess it is more of a spreadbore than I originally thought -- just not as radical as a Holley doublepumper. Primaries are 1" 7/16ths, secondaries 1" 11/16ths, more or less.
There is a spring actuated flap above the secondaries, that seems to be moved only by engine suction -- is that it or is something missing?
The Choke/vacuum brake is on the passenger side... there is a "3/8ths angled-down inlet forward of the fuel intake on the passenger side, too. and the carb has 2 separate mixture screws in front like an AFB.
I'm also working on putting in a '72-style accelerator pedal setup to use a cable instead of the pushrod/bellcrank rube goldberg rig that we had to fabricate 20-something years ago to operate a 390 cfm Holley in sidesaddle configuration. It's about to give out and doesn't give me WOT anyway. We had to fabricate a metal box to mount the gas pedal pivot to the '68 firewall. The bolt pattern is slightly different.
"SplitSix" over in the Inliners page ran the AVS numbers [K7 4966S] for me and came up with it being out of a '71 Mopar 440, with 750 cfm. Too big for my .030 or .060 -over 292, but it makes for an interesting discussion.
Thanks,
Brian
