Reply to "Weber IDF's and Panteras"

danieljonesMember

> Theoretically if a person restrains their right foot, the fuel mileage
> shouldn't be too bad.

Fuel economy can be better than a 4 barrel if properly calibrated. Vizard
reported 18 to 20 MPG on his SBC-powered shop truck with 48mm Webers.

> The 48's were really developed for Shelby's 289 Cobras. They start to show
> restriction issues at around 5,500 rpm's on a 289.

Vizard's testing on a 350 SBC found that 48mm Webers on a down draft IR
intake showed the Webers to be superior in peak power up to around 480 HP,
after which a larger 4 barrel carb on a plenum intake would make more peak
power but not necessarily better average. The independent runner manifolding
provides better power in low and mid-range so the cross-over point for
average power is higher.

Dan Jones

5/17/1211:31 AM

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