Dual carbs???

[SubGothius]

Looks like that carb was made to loophole a "single four-barrel carb" rule in SCCA Trans-Am racing at the time:
https://www.stangnet.com/mustang-for...n-this.862697/

[Salteen]

Looks like that carb was made to loophole a "single four-barrel carb" rule in SCCA Trans-Am racing at the time:
https://www.stangnet.com/mustang-for...n-this.862697/

indeed it was. but it still works great!

4 40mm motorcycle carbs flow 667.2 at 1.5 inches vaccum and 943.138 at 3 inches. extremely way too much carb. if you want throttle response you could run dual single barrels from a straight six like a dodge 225, ford 300, or a chevy 292. of course shared plenum and long runner to help torque.

875 and 943 are way too much carb (although the autolite inline 4 was rated as a 2 bbl, it actually only flowed like a 618.8 cfm. there is a boss 429 version too, and it had larger venturies, dunno the cfm)